I work at Google. This video barely scratches the surface of Google's C++ style guide. IMHO, the style guide is a wonderful thing, and makes C++ a pleasure to work with at Google. Although your preferences may not agree with every little detail, the consistent application of the style guide across a massive codebase is highly valuable to everyone that will ever lay eyes on your code. There could easily be hundreds or thousands of engineers that interact with your code - interfacing with its API, extending it's functionality, debugging it, improving it's performance, etc. Every decision made by the style guide is one less thing all those engineers have to consider.

@LowLevelLearning

11 ай бұрын

Wow that’s awesome! Thanks for watching. Yeah there were tons of interesting bits I wanted to go into but wouldn’t make a good video.

@name_cpp

11 ай бұрын

Agreed, google C++ is the really nice to work with. I also really love the absl and base libraries. I was intimidated at first by how large the codebase was but the consistency and cleanliness of the code helped a lot

@mipmipmipmipmip

11 ай бұрын

Crazy how Google writes future-ready code, but cancels many services (google+, stadia, etc.etc.) within a few years of launch. Maybe make the projects future ready first.

@8Trails50

11 ай бұрын

just the no exception rule is so nice. I hate exceptions in C++. It's not like in Java where you can declare "throws". You have to understand all the callers. And you have to trust that someone doesn't add an exception in the future and breaks your code.

@nathanoy_

11 ай бұрын

Does Google have a linter that can hint to the programmer that they are possibly violating the style guide?

Composition over inheritance and RAII (smart pointers) are the biggest lessons here. They drastically de-shittify your code.

One of my favorite videos on KZread, I never even thought of looking at style guides. With a good amount of C++ under my belt I can totally see these guides being useful

@LowLevelLearning

11 ай бұрын

Glad you enjoyed it!

Aw man, two spaces??? I’m yet to try looking at code like that, but four has always looked better

@pierelenigus8598

11 ай бұрын

4 spaces has always been the standard for tabs. see ansi for the real world proper use of tabs. google has retards running the show and the two tab mandate has already hurt their developers immensely. but they would never tell the truth.

@matthewfennell7886

11 ай бұрын

I like two personally, but professionally 4 with a reasonable column limit is better as it dissuades excessive nesting

@itzvoko1

11 ай бұрын

Two spaces are very hard to see. IT'S a C++ CODE, NOT HTML!

@nullptr.

11 ай бұрын

I'm sure theres a quick way to replace whatever tabs you prefer with two spaces before commiting the code

@dickheadrecs

11 ай бұрын

this quibble is by far the least important thing about writing c++

I never write any comments on YT but I really feel like doing it this time. I'm a C++ developer and it's my first job ever (same thing for my teammates), so we struggle with many of these details every day because I think it's quite hard to decide on your own which is the best practice. It's nice to know it's not only me and that it's a real deal out there to write good code in C++ (I also thought those many details of the language make it very powerful but difficult to manage correctly, but I thought it was just me being an inexperienced engineer). I really enjoyed this video, I would also like to see more C++ guidelines and stuff (obviously). Keep up the good work!

@KohuGaly

11 ай бұрын

In C++, having an explicit style-guide that is enforced in code-reviews (and preferably by some automatic linters too) is absolutely essential. C++ is just too bloated with 40 years worth of legacy features that often interact with each other in weird ways. You have to pick some subset of C++ that all of you understand and use only that subset. Many such style guides are publicly available. You can copy them or take inspiration and make your own.

@ToCarlosHuevos

11 ай бұрын

@@KohuGaly Thank you! We try to use C++ 11, which we found quite readable, but tbh we don't strictly follow any standard. Most of the code that we inherited was programmed in a C style (but with classes) instead of C++ with a standard, so that poses a problem.

@KohuGaly

11 ай бұрын

@@ToCarlosHuevos I know exactly what you mean :-D I recently got a job as a embedded automotive C/C++ developer. The standard used there is MISRA C++. The oldest parts of the code base pre-date the standard and are literally written in C. "Fun" fact: MISRA C++ forbids all forms of pointer arithmetic except indexing into fixed-sized arrays. If you read the last two sentences and have basic experience in C and C++, you know exactly why "Fun" is in quotes. 😀

@sharana.p5921

11 ай бұрын

@@KohuGaly Hi, I'm sharan. I'm working in a startup called Yali Mobility. We are making electric three wheeler for wheelchair users. I'm just a year old experienced programmer. Currently I'm the only person who programs the vehicle. So I'm struggling alot, kindly help me in some way like standardization of the code etc. This may help us to make the work flow and performance of the code much better. Thank you

@KohuGaly

11 ай бұрын

@@sharana.p5921 Hi Sharan. Unfortunately, you are probably more skilled in C++ than I am. I was just lucky to land a job in a large corporate, with a lot of pre-existing expertise and know-how to learn from. Not gonna lie, writing software for a road vehicle, as a 1-year-of-experience solo developer... that sounds like a pretty reliable way to kill someone by software bug.

Great video! A few things, from a Google engineer (not speaking for the whole company, of course). 1. We absolutely have tech debt. These things help reduce certain kinds of tech debt, but it still exists all over the place. We're not magical; we make bad choices which we're then stuck with. 2. The lexical code style goes beyond just tabs vs spaces. Our code review system will yell at you if the code isn't formatted according to whatever clang-format would produce. Our style guide for indentation, line breaks, etc, is just "run clang-format and use that". I don't always like the choices which clang-format makes, but it's infinitely better for everyone to use the same standard than for me to use a standard I like more, but for diffs to be larger due to whitespace changes. 3. An important part of the style guide boils down to "don't get clever with template metaprogramming." I've been writing C++ for about 3 years now, and as soon as things get beyond the most basic template usage, I'm lost. If you're relying on SFINAE, you should probably reach for a different solution. Same thing once you start dealing with rvalues and lvalues. There are some places where those features really do make sense, but for things like "call this service. If foo is greater than 25, set bar to true", you probably don't need that stuff.

@spinsmctwist2719

10 ай бұрын

I appreciate the insight!

@TheOnlyAndreySotnikov

4 ай бұрын

Item 3 is a typical complaint of someone who learned 30% of the language but still decided to put it on his resume.

@anonimowelwiatko9811

4 ай бұрын

@@TheOnlyAndreySotnikov Dude, do you work with someone else code beyond your own? Templates can get really confusing. It's all abstraction so there is certain difficulty to comprehend someone else idea in form of code, specially if it doesn't read well. I spent many hours trying to decipher what author had in mind while creating his solution to problem so speaking from experience (just lately I had to decouple 3000 lines long class implementation written and edited by different people). It included weird lambda expressions and templates.

@TheOnlyAndreySotnikov

4 ай бұрын

@@anonimowelwiatko9811 Dude yourself. The most frequent source of complaints about templates is a lack of education. Software engineering is a unique field. In any other area, you can't say: "or, integrals is a too complicated abstraction for me," and claim you know calculus. Not only that but in software engineering, you can also force all your colleagues to dumb down to your level and never use integrals in 𝘵𝘩𝘦𝘪𝘳 work. In any other profession, you just shut up and learn. In software engineering, you complain. Meanwhile, not "professional" programmers successfully learn, write, and maintain huge packages written in TeX, which is way more complicated to comprehend than C++ templates. So, 𝘥𝘶𝘥𝘦, learn and practice.

@ignotlichitikus9314

2 ай бұрын

instead of SFINAE you should use more modern features like concepts and if constexpr from c++17 many things that are written in older versions of c++ can be written more clearly and using less "magic syntax" in the latest versions of the language (c++20/23)

love to see more c++ stuff like this, maybe the best c++ static analyzers, formatters, unit and integration testers etc everyone just says “use rust” - surely there’s ways to use modern c++ without going insane

@Scymet

11 ай бұрын

use rust tho 😳

@raylopez99

11 ай бұрын

@@Scymet Yeah I'm getting the hang of Rust after 1 month. I just figured out the 'question mark' operator for Result, ain't it cool? Saves a few lines of code and much to my surprise, despite Result only having one enum specified when using the question mark operator, the Error does bubble up to the calling function, automagically, But I will never, ever figure out lifetime annotations, even though some library functions use them. I will avoid them at all costs and I just return a value, never consuming the value entirely within a function, and therefore never having to worry about it going out of scope. Also I don't plan on ever doing parallel processing, where you have to learn about lifetime annotations. I hobby code however so your situation at work may be different.

@elimgarak3597

11 ай бұрын

The sane way of using a language should be the default way of using it. You shouldn't have to do extra research just to make its usage barely bearable. If this isn't the case, then the language is utter garbage.

@ghoulism6522

11 ай бұрын

@@Scymet found the rustacean

@DavidM_603

11 ай бұрын

The best way to use C++ without going insane is to use it as god intended. It's C, with some extras. It only becomes a shallow imitation of Rust if you try to pretend C++ is not C, and build your whole program out of just the extras.

The multiple inheritance example is bad imo, because in that case you should actually let "Child" inherit from "Person", and not "Mother" and "Father". Inheritance is usually used to generalize something and abstract it away, like a "Table" is a type of "Furniture", but not a child is a mother and a father.

@TheRationalPi

11 ай бұрын

Definitely agree, he could have used a better example there. To expand on your furniture idea, you could have something like a "convertible sofa" that inherits both from "bed" and "couch," which are themselves inheriting from "furniture."

@2JulioHD

10 ай бұрын

Mother and Father are Persons after all, so I see no issue here. Child referes to them being child classes, but that doesn't mean the example is incorrect. As you said, inheritance is there to generalize something and Person is more general then Mother and Father, they are something more specific.

@TheRationalPi

10 ай бұрын

@@2JulioHD I think @ruarq1510's broader point here is that the Child/Mother/Father example is confusing because it conflates biological "inheritance" between children and their parents with class "inheritance" between a subclass and its base class. It reinforces a metaphor that is not particularly good to begin with.

@bitw1se

10 ай бұрын

@@2JulioHD Yeah, but you usually say „a mother is a type of Person“ or „a father is a type of person“, that’s how inheritance works. In the example it doesn’t make sense to let „Child“ in inherit from „Mother“ and „Father“, since a child is a person and not a mother or a father. Instead, the Child class should have the mother and father class as an attribute. In the real world, yes, a child inherits the genes from their parents, but genetic inheritance is not the same as inheritance in programming, it’s a completely different thing. You also can’t generalize a child to be a mother or a father, but that’s what polymorphism does.

@Dennis19901

3 ай бұрын

@@2JulioHD Inheritance should be logical. Is a ? And this should follow through the inheritance structure. In this case, mother and father are both people. Child is a person. But child is not a mother nor a father, and especially can't be both at the same time.

If Google doesn't like using exceptions cause of flow control stuff what do they prefer to use instead

@gerardmarquinarubio9492

11 ай бұрын

Return values

@Nape420

11 ай бұрын

Yeah, this was just glossed over as if its some minor thing. How do they handle their exceptions and, more importantly, errors then?

@trainerprecious1218

11 ай бұрын

probably simple optional or rust like solution `Result`

@Nape420

11 ай бұрын

@@jmickeyd53 Thanks for the info. Makes sense

@JeffCaplan313

11 ай бұрын

@@Nape420 They probably collect requirements and validate their input.

I love that the solution to OOP's problems always ends up being to avoid using OOP.

@Liam_The_Great

7 ай бұрын

No. Interface inheritance is still OOP

@officialraylong

6 ай бұрын

I'm not sure how you derived "avoid using OOP" from that video. Composition with objects and interface inheritance for different classes are OOP techniques.

@Liam_The_Great

6 ай бұрын

@@officialraylong The "OOP is useless" crowd are not known for their critical thinking skills

@MoolsDogTwoOfficial

4 ай бұрын

@@Liam_The_GreatOOP for me is the best thing since sliced bread.

The Google C++ style guide was my bible for a long time. It's incredible and makes C++ truly beautiful and easy. I miss my C++ days :)

@lightning_11

Ай бұрын

People still complain at me a bit sometimes because I use 2 spaces as code indentation... although I know they'll complain no matter what I use, so I just try to get past it.

I really liked this summary, well done👍

can you also make a vid on AUTOSAR? i think it's a pretty interesting case study of a more modern approach on safe use of c++ in a critical infrastructure development

The fact code looks different on different editors with the tab character is the benefit of tabs in my opinion. It allows personal preference to apply to something universal. The individual programmer can choose if they prefer the tab to look like 2 or 4 spaces or whatever else. It's technically also one byte less than two space characters but that hardly matters today

@Asto508

4 ай бұрын

I honestly think large part of this debate is really caused by Python and its inability to deal with mixed tabs and spaces. I also had issues with editing YAML files in the past for the same reason. I actually abandoned tabs for whitespaces because I was just sick of having random syntax errors showing up at runtime just because I used a \t in a sea of whitespaces in my editor.

@casperes0912

3 ай бұрын

@@Asto508 I only deal with languages that parse both the same these days.

@BoletusDeluxe

28 күн бұрын

Yeah I never understood why people are so adamant to make indentation look the same on both machines. If you need to align something visually, use spaces sure, but indentation is there to represent scopes, not for alignment. Removing tabs also hurts developers who use large or small tabs for accessibility or because it helps them be more productive.

@BrandyBalloon

12 күн бұрын

I think the issue is that allowing tabs can result in the use of both tabs and spaces for vertical alignment. If the tab stop locations are changed, it gets messed up.

@BoletusDeluxe

12 күн бұрын

@@BrandyBalloon trust your programmers to use tabs for indentation and spaces for alignment? There's so many tools to detect tabs and spaces. Most editors let you visualise tabs and spaces.

It is true that in large projects using exceptions might be difficult to maintain, especially when there are many developers working on the same piece of code, however, they are good to have in situations where we receive completely unexpected data, corrupted data, or for validation reasons to bullet proof complex data pipelines.

The worst Java code I've ever seen was part of (Googles) easier mediapipe API. They had DEEP Inheritance, manually written getters and setters which contained a few surprises (like giving back properties that already had their own getters), made intensive use of method overloading and inherited methods including methods, and these methods often took parameters that were named in a way to imply they had a certain function, only to be thrown away/used in a different way, or they were actually set, but that didn't matter as at a later point in the lifecycle these values would be overwritten before doing anything. Combine that with the need to also use the not easy and not well documented camera2 API (which they combined with some parts of CameraX) and that under all that Spagetti mess they used JNI to call C++ code that also wasn't particularly well documented, and I got nowhere but sure wasted a lot of time thinking I finally got to the target. Honestly, while we're at this, LARGE swaths of the Android API require you to use implementation Inheritance, so thanks for forcing me to do the things you forbid your engineers to do Google. Sorry for the rant, I'm still super salty from that experience. What they archived with mediapipe is remarkable, and it's nice they made it open source. But mediapipe did not keep it's promises (real time body tracking on IOT, pretty much every mobile - top models released after mediapipe - we tried didn't get over sustained 10 FPS, while being at best at a mean of 18 FPS), and the API was a nightmare and not at all flexible enough for our needs.

@jordixboy

11 ай бұрын

These are general guidelines. Not all engineers/teams follow them.

@ReadThisOnly

11 ай бұрын

@@jordixboy also for c++ lol, not java

@nikitapustovoi8987

11 ай бұрын

Android is a bit separated at Google

@uwuLegacy

11 ай бұрын

Google has tens of thousands of engineers working across hundreds of projects. Whoever developed this style guide probably doesn’t even touch Java code in his day-to-day.

@tatianaes3354

11 ай бұрын

⁠Android was a purchase for Google, had nothing to do with it in the core. So no wonder its code does not follow Google’s guidelines. Besides, those guidelines changed a lot from the 1990s to 2000s, then to the 2010s, and then to the 2020s, so Google’s catalogue of code is a huge nasty mess. Probably only MS is worse than Google.

Great video and all... just please don't build an inheritance relationship Child -> Mother, Father -> Person. Even with inheritance as a concept, that does not make sense. But especially in C++, inheritance means "is-a" and a Child is not always a Mother. Everything that would apply to Mother, would also be applicable to Child under C++.

Google doesnt allow exceptions because that is what they happened to pick years ago. They have debated enabling exceptions (they are generally more performant on the happy case for example), but mixing error returning code and exception code is a bad idea. They say that if they were to start from scratch today, they probably would use exceptions instead of error returns.

@amrojjeh

11 ай бұрын

Do you have a source?

@brendanhansknecht4650

11 ай бұрын

@@amrojjeh my first reply doesn't seem to have gone through since I put a link in it... Anyway, two sources: 1. It mentions in the style guide under the exception section > Things would probably be different if we had to do it all over again from scratch. 2. Reading an internal email chain about them.

@amrojjeh

11 ай бұрын

@@brendanhansknecht4650 Thanks! That's quite interesting. I personally find exceptions to be really strange. I've found that code is much more readable whenever the error is embedded within the type itself. I suppose though that's not really an option in C++

@johnshaw6702

11 ай бұрын

​@@amrojjeh I started out as a self taught C programmer designing and writing all the code, so I know you can write good code without exceptions. Everything you can do in C, you can do in C++. The only issue I ever had with exceptions in some languages is that some programmers use them to be lazy, instead of preventing possible exceptions from occurring in the first place. An exception should be an exceptional case (memory or similar issue), not a go to solution.

@amrojjeh

11 ай бұрын

@@johnshaw6702 I personally still find it difficult to assess what should be a typical failure and what's an exception. Would you have any resources to recommend on that?

Praise the algorithm. I am going to write coding specification for my project tomorrow and this reminded me of some thing I should probably include.

jajaja loved that ending. Good luck bro!

The point of tabs is to look different based each engineer's config. Some people may like 4 spaces, others 8, some 2. You can't have that customization with spaces.

People often role their eyes at style guides, or having their PRs blocked because it doesn't follow a certain style rule. They don't understand how easy it makes for third parties looking at your code.

for inhiretance problem it called the daimond problem , and u can fix it easily by adding virtual key word , like ( class mother: virtual parent | class father: virtual parent )

6:40 --> An abstract class contains at least one pure virtual function. You declare a pure virtual function by using a pure specifier (= 0) in the declaration of a virtual member function in the class declaration.

Love this! I'm happy to see I already employed some of those rules for my own sanity. Yay me!

Why are you so good at explaining? I wish you were my prof.

Do more like these. These are great

About inheritance issue with diamond example I recently found great workaround which is class Bar : virtual public Foo {} which makes Foo class only being inherited once no matter how many classes its derived by. Its really awesome and powerful.

1:26 Yeah, that's the point of tab. That everyone who reads the code can configure it the way they want to be. That way no matter who looks at the code, it will always be with the indentation the person feels comfortable with. Especially 2 spaces are very little and becomes over the course of a work day quite eye straining (which btw is the reason why the Linux kernel defines 8 spaces..., tabs would still be better tho). This is quite frankly the type of rule where I would configure my setup to convert 2 spaces into a tab when opening the file and on save convert a tab into 2 spaces...

@m4rch3n1ng

11 ай бұрын

while i am not even close to a kernel dev, looking through the code, they seem to be using tabs, and the top-level .clang-format has the config "UseTab: Always" enabled

@miguelborges7913

11 ай бұрын

I'm advocate of using tabs over spaces too, due to the feature of being able to change the tab size in every editor (it visually replaces tabs with spaces, but the text data is just tabs). Not only it saves more memory, it makes it also more portable.

@spfy

11 ай бұрын

@@m4rch3n1ng Kernel style guide does say to use tabs, but also defines tabs as being 8 spaces. IIRC, there is also a column-width limit of 80 characters, which means the size of the tabs needs to be defined. Which kinda nullifies the point of tabs doesn't it, since someone that likes tabs as 4 spaces will potentially be formatting their line-wraps incorrectly lol

@forbiddenera

11 ай бұрын

Tabs set to 4 ftw and half spaced returns switch(smt) { case 0: do_smth(); break; case 1: for (i=0;i

@m4rch3n1ng

11 ай бұрын

@@spfy oh that makes a lot of sense in that context then, i didn't even think about column-width - i just thought it was a visual thing (that you should be able to override in your editor)

You can configure The Editor to do TRT when you hit tab. Hence not vim or other stuff. 😊

Also semantic issue but abstract class are actually for the sake of implementation inheritance and actual interfaces are for the case of composition

Very informative video. I wasn't sure what to expect, but I'm glad I clicked. The tab/space debate will rage on, but I like Google's take on it. That's not one I've heard before because, well, I've never been on a giant team like that where consistency is the key to not losing millions in a day. That's a fun example you chose for the classes (Mother, Father, child), but in my experience, it's best to avoid the noun/verb model and just do what works best. Trying to line up everything philosophically as classes just introduces logical issues like this. In that example, you'd probably be better off defining Person, Parent, Child, and Family classes. Since children in real life don't inherit everything evenly and directly from both parents, it doesn't make any sense to define their classes like that. Rather you should define a Person that Parent and Child will inherit from, and then you can define a Family which takes two parents and a list of children as arguments. If you really wanna get inclusive, just take in a list of parents and children lol. But your point is valid, inheritance can be non-intuitive and should be handled with caution.

@spell105

4 ай бұрын

Or, alternatively: all people are people. You don't need a 'mother' and 'father' class, or a 'child' class. This kind of metadata belongs to a family; a family is not a person, but a lot of people in a specific hierarchy of parent -> child. That sounds like a data structure to me.

I should probably read that style guide because a lot of these things I already do in my own code. Two spaces for each indentation level and I've set my tab key to insert four. Plus, since vim has dedicated keys for it I can increase or decrease indentation levels with ease. Need to push right 3 levels, 3> and done. Anyone that thinks tabs are superior should read that guide.

@sqlexp

6 ай бұрын

That guide is trash.

My absolute favourite is working on a code base where a class inherits class templates that inherit other templates that inherit an interface. That's the ultimate in "FU figure this out" coding..

Learnt so much from you ❤🎉 Good work

I agree on all these things, inheritance thought I feel that it really depends on what your making. In a video game or a GUI framework there is a naturally occurring hierarchical relationship. So I believe in the "is a, has a, and uses a" rules. Also a huge fan of the Gof book. Great video! If you really want safe code, you need to use a FP language like F#.

@nankinink

8 ай бұрын

Even in game development composition is better than inheritance. GUIs can also be done by composition. I follow the rule that if your class has more than 1 layer of inheritance, you are doing it wrong.

@torarinvik4920

8 ай бұрын

@@nankininkThat is a good rule to follow as guideline. The benefit and danger of inheritance is that you can modify millions of classes by just modifying the parent class. So for instance if you want to change the default speed for enemies or default size for a window you can do that in just one place. Also imagine having a biology simulator and this program having perhaps over 10,000 different species or more then you can save an enormous amount of code by using inheritance, if you have many types that differs slightly from each other. I don't use inheritance much myself but it certainly has it's niche use cases.

@nick15684

6 ай бұрын

I would generally prefer composition in the case of a game or a GUI whenever possible. Create "foundational" classes that compose the entire structure. Keep inheritance as shallow as possible and prefer abstract classes.

@torarinvik4920

6 ай бұрын

@@nick15684 Yeah, if possible then do it!

@Dennis19901

3 ай бұрын

@@nick15684 An abstract class is still inheritance. Especially if it's not a pure abstract class.

I don't agree with 100% of the guide (e.g. I can't have that 2-space indentation haha), but I loved the fact the video is about C++❤️ Please keep it up. Greetings from Germany.

The capitalization in the title of this video made my OCD twitch but the content was outstanding!

i like your videos. they are well informed. thanks.

“Tab width might be different from one editor to another” that’s the point of them!!!! 😭 I hate it when other engineer’s tell me what my indent should be, write better code that doesn’t rely on horizontal alignment to actually read it. Maybe someday source code will just be ASTs and I’ll be able to have the style I actually want.

@CartoType

10 ай бұрын

A good way to make code readable is to line up opening and closing braces. Microsoft does that, but most other companies don't, for reasons of fashion rather than logic. Even better, use Whitesmiths style; but Microsoft style (braces line up and statements are indented relative to them) is okay.

Ah yes, the Google code, proof even against the future, unless it's the future where they discontinue the project

@anon1963

11 ай бұрын

i don't think they discontinue it because of bad code

@_____case

11 ай бұрын

Discontinuing projects is necessary sometimes. Have you ever worked at a company that supported a product for way longer than they should have?

Keep doing this kind of videos, it's a village of motivation when realizing that I understand some google or nasa Cpp code

Any chance of a video on this cool library called Raylibs? I think you would really like it.

two spaces.. bruh..

@quezip

12 күн бұрын

I do dat I don't like tabs

@Lighter7900music

4 күн бұрын

@@quezip tabs make your files smaller

@quezip

4 күн бұрын

@@Lighter7900music and..? I'm not here with like 2 mb of space

It may work for Google but some of this wouldn't work for me; and I've been a successful C++ programmer for 30 years now. Part of that is because Google has thousands of programmers, and to an extent the convoy has to travel at the speed of the slowest ship, but there are other foot-shooting rules like not using exceptions. If the overall project doesn't use exceptions, the way to add an exception-using module is for the module to expose an API that doesn't use exceptions, but to use them inside the module. Each API function can easily trap exceptions and convert them into error codes or whatever. I use this technique myself.

I use the Google style for clang-format, because I think it looks the best and makes the most sense. The only thing I've changed is make the tab 4 spaces.

I prefer tabs personally for indentation, but consistency is the more important thing

You can still write a spaghetti code by using composition. I've had to work with the other's code, where each next class contained one and only instance of a previous one as a private field, and not much beyond that.

@bestnocture

20 күн бұрын

It really is impossible to not write spaghetti code no matter what guidelines one uses.

@LukeVilent

19 күн бұрын

@@bestnocture I'm afraid don't fully get the wording. Did I understand you correctly, that any good guideline can be abused - intentionally or not - in such a way that it's gonna lead to a spaghetti code?

1:20 That's actually the prime argument in favor of tabs. They use different tabs because they have different setups. I believe in Tabs for indentation, Spaces for alignment, i.e. anything after the initial tabs on a line should automatically expand into spaces. All editors should support this (but most don't)

Can we have a video on "How google writes gorgeous java?" , if possible . Love your videos

This is almost the same as I’ve written up 20 years ago for my former employer as tech lead. Except for the smart pointers we didn’t have them. But we did force passing or the pointer between classes and it needed to be instantiated always in the main program. That way the scope was clear and you know when to free.

The inheritance guide makes a lot of sense. I've seen crazy recursive or tangled object creation and method calls before, which is a pain to debug and extend further.

In the Inheritance example, the problem with the Mother-Father-Child structure isn't inherently an issue of Inheritance, instead it is just really bad design. One shouldn't use composition just to avoid inheritance, but use it where it makes sense (like in the example).

@9SMTM6

11 ай бұрын

Well that isnt the only issue present with Inheritance. Other nice situations are long Inheritance chains, especially if combined with overloads and stuff like specialization. Inheritance chains can already make it difficult to track down where a method is coming from, but with specialization of overloaded functions, or the overwrite of methods that get called by overloaded methods in ancestors, things can get super nasty, and quick at that. After experiencing the lack of inheritance in Rust I don't want it back.

@jordixboy

11 ай бұрын

inheritance does more bad than good.

@makezdtem

11 ай бұрын

bojler eladó

@dnull

11 ай бұрын

inheritance doesn't work very well in the real world. obviously, as you stated, one shouldn't use composition *just* to avoid inheritance, but 1. in most cases it makes much more sense to use composition, and 2. it is generally better to avoid inheritance at all costs. now from what i see in the recent years, programmers gradually move away from OOP (and there are good reasons for that), and even hardcore OOP users avoid using some of its features. generally, i think it's a good thing, because we all know what overuse of OOP features of the 90s and early 00s resulted in. obviously, if you suck at code it doesn't matter what paradigm you use (and vice versa), but again, there are reasons to avoid OOP anyway.

@theultimateevil3430

11 ай бұрын

One should always use composition. Inheritance brings ambiguity by definition and hides the implementation details from the person who's working inside the class code. You can still have dynamic dispatch and all benefits of polymorphism without classic inheritance, even in C++ though it's not enforced by the compiler. It is enforced in Rust.

Really curious to see if Carbon will be designed with a bias towards Google's style guide. Are there C++ features for which they won't build compatible functionality in Carbon, or will they aim to be 100% compatible with the entire C++ language?

I liked this video. Request *bit manipulation*

Every course I've done uses the classic animals or shapes example to teach inheritance, but none of them demonstrated a real world use case for inheritance. So the result of that is that I understand the principle of inheritance, but I have no idea when it might be appropriate to actually use it.

If you can configure your editor to write 2 spaces when you press tab, surely you can also configure how wide actual HORIZONTAL TABULATION characters are.

@randolphbusch7777

11 ай бұрын

The whole point of tabs is that you can configure how far the indentation is for yourself and that someone else DOES NOT get to dictate how it looks for you.

@vaijns

11 ай бұрын

yeah, that's what people arguing for tabs say. I also prefer tabs. But you also gotta see the point of consistency that spaces have. If you're using tabs and have them configured to be as wide as 4 spaces e.g. you might add more of them to make the code look good on your end. But then someone else who has the width of tab (character) configured as 2 spaces has a completely different looking piece of code. For normal indentation that might be fine but if you have a long function signature e.g. that you wanna break down to multiple lines, you might wanna line it up with the opening parentheses and where those are differs depending on your tabs setting. say you have this function: int doSomeStuff(int (*callback)(int*, int*), int* a, int* b){ // do something... return callback(a, b); } might not be the best way to format your code but in that case the width of your tabs matters. With spaces the two lines of your function signature will always be lining up.

@SharpBritannia

11 ай бұрын

@@vaijns I won't do that tho. When I go a level deeper in indentation I push tab once and only once. The argument list already has its own brackets; It doesn't need to be aligned.

@vaijns

11 ай бұрын

@@SharpBritannia So do I. But that's why someone might argue for spaces and why both opinions are valid, depending on how you format your code.

@ghosthunter0950

11 ай бұрын

​​@@vaijns Honestly I don't think it matters. The issues of both can be solved by defining code formatting for the project. You just have to choose one and stick with it. For example for functions with a lot of parameters you define going down a line and tabbing once.

2:25 Ehm, no, it returns a unique_ptr (a smart pointer) to Foo (and creates a Foo while doing so).

1:16 isn’t that a good thing? Every one can set the tab width to their preference?

6:48 you're missing a " = 0" to make speak() an abstract method.

Tabs > spaces

but why would you consider "it will look the same in different editors" to be a plus? Main reason for tabs is exactly that - it allows devs to view the indentation to way they prefer it. Someone likes small indentation, someone needs large one.

@RigelOrionBeta

11 ай бұрын

Ever initialized a large struct array with data of varrying sizes, and wanted it to look like a table of rows and columns? Your tabs may make it look nice on your screen, but for someone with a different tab size, it will look awful. With spaces it looks identical to each editor. That goes for any code that you wish to line up, such as when you have a function with many params that you wish to line up on a newline.

@TheArakan94

11 ай бұрын

@@RigelOrionBeta well in these corner cases, nothing is stopping me from using spaces whenever "lining up" is my goal.. It's not argument for universal space usage for indentation.

@tidepool5400

11 ай бұрын

At a large company where potentially a hundred people might look at the same code, it’s helpful to ensure they look at the EXACT same code. You’re right, it limits freedom and might make some developers slightly less happy, but it removes the possibility of bugs due to visual differences between developers.

@tdplay4135

11 ай бұрын

@@RigelOrionBeta That is alignment, not indentation.

@monochromeart7311

11 ай бұрын

​​@@tidepool5400 tabs are more accessible for people with vision problems. Great minds can be left out just because they were unfortunate to have really bad vision.

I would really like to see some following videos with Microsoft with C#, Apple with Swift and that kind of stuff. Could be really interesting!

I agree with 2 space indentation and it is how I do it.

@daiske2867

Ай бұрын

DId u rly press 2 space or just press tab that eq to 2 space? If rly => why, u can press 1 button at all else why, it rly matter to u like u use tab or space.

I think tabs are better than spaces due to one specific reason only: accessibility. People with problems with their vision usually have different ways to make code readable. Some people would blow up the font size and reduce tab width, some people would increase tab width instead. If spaces were used instead of tabs, those people would have to manually convert the spaces to tabs so they can customise the tab width, then change the tabs back to spaces afterwards.

@gagagero

11 ай бұрын

Yeah, I don't really get this "looks the same" point. Who cares if it looks the same, if it has the same meaning?

@kkiimm009

11 ай бұрын

Sounds like a job for the editor.

@DaddyFrosty

11 ай бұрын

@@gagagero yeah if all code uses tabs everything will look the same according to your settings. Actually most retarded decision by google

@CosmicRadishes

11 ай бұрын

I think it's getting better over time. Older generation is still using some weird *notepad like* IDEs because of habit. But in my circle young devs are working with more modern tools like VSC.

@gagagero

11 ай бұрын

@@CosmicRadishes How does that relate to anything?

How to write future-proof C++ for Win32: compile with Digital Mars to support Windows 95-11, by the time x86 emulation becomes popular, users will be able to emulate Windows 95 or Windows NT 4.0 without taking excessive resources to emulate newer versions!

Love the new series

Tabs vs spaces is a non-fight. Use tabs with the correct indentation(read the project guidelines), let your IDE replace them with spaces. Do no check in tabs in your files and amend the commit if you did.

Hi

@fuery.

11 ай бұрын

Hello

@scorcism.

11 ай бұрын

@@fuery. hello hi

@LowLevelLearning

11 ай бұрын

uwu

@fuery.

11 ай бұрын

​@@LowLevelLearning youtube: yes this perfectly translates to "this", such logic

@nebularzz

11 ай бұрын

hi

Good old spaces vs tabs. The only situation I dont like spaces is when one arrow key press doesnt move one full indentation or backspace doesnt remove full indentation.

@nilau8463

11 ай бұрын

Just hold ctrl and boom

@khodok9636

11 ай бұрын

@@nilau8463 that's what I tell everyone who say spaces are annoying... How does that change anything for you when using full word directional arrows movements?

The diamond problem in Inheritance, Can be solved in C++. Because there is the concept of virtual ness which deals with that problem and prevent the base class to inherit multiple times

would it kill ya to add the link to the style guide? would save me some time googling it ;)

I tend to use spaces out of habit, but tabs are better for accessibility (blind programmers often use braille displays, which only offer 40 characters per line), and with the exception of alignment, it doesn't really matter if the code looks identical. In the case of alignment, you just use spaces after the tabs. 2 spaces is probably better for alignment than 4 in the case of braille displays (though a tab is still better as it's one character vs two), but then people with poor vision due to age or the like may find that such narrow indentation is difficult to read by sight. In such a case, the fact that tabs are of inconsistent width is actually a positive.

@Slukke

4 ай бұрын

seriously lol, tabs are superior for literally this exact reason, among many others. i seriously hope that this is not Google's only reason for enforcing an inferior standard on their engineers

Basically Rust. Now I get it

Please do a video about Apple's coding standards/best practices.

I might have missed it, but I don't think you included what they do in place of exceptions?

2:29 If the type is not "Widget" then the function is wrong, not the convention. Also, just hover over the variable name to see the type in most editors. 3:52 If the class/function needs to *take over* the ownership then pass a smart pointer. Otherwise, just .get() a regular pointer from the smart pointer. Regular pointers are not evil, they are just not good at owing stuff. 4:56 That example only leaks memory because it's not using RAII, not due to exceptions. I'm sure that Google has good reasons to avoid exceptions, but this one ain't it. 6:17 Completely agree, avoid inheritance like the plague. As for interface inheritance, C++20 arguably has an even better option: concepts. Concepts can only restrict an interface and never the implementation, and unlike inheritance-based interfaces, concepts do not have a runtime impact. (The trade-off is that they do trap you in template-land).

@erikb4407

11 ай бұрын

Template-land is inescapable 😔 once trapped, you'll never see the light of explicit types again

1:20 That's the whole point of the TAB character - it lets you adjust the visual amount of indentation to your liking without modifying the code. The fact that the code can look differently when viewed in editors with different configurations is not an issue but a feature. The rest of the rules are perfectly reasonable.

@afelias

10 ай бұрын

Yeah but that's exactly why the TAB or \t special character is so bad in text editors - it's not monospace. It takes up some unknown integer amount of monospace blocks. The same way you don't want to write code with crazy Unicode characters in naming conventions (and that's if the language even allows them), you don't want TABs themselves. You just want the utility TABs provide, hence the spaces.

@vladomaimun

10 ай бұрын

@@afelias As you said, tabs take an integer number of monospace positions. Therefore they don't mess up monospace fonts - characters typed after tabs are still aligned to the monospaced grid. I absolutely do want tabs themselfs because they provide better utility than spaces.

My opinions: Tabs vs spaces: Disagree, it is just as easy to configure tab size in your editor. (also I find code with only 2 spaces hard to read) Type deduction: Agree Ownership: Mostly agree, depends on the kind of project Exceptions: Somewhat disagree, exceptions are fine if they are documented and used only in exceptional cases Inheritance: Disagree, diamond problem is not a real problem since virtual inheritance exists

Thanks for the video man!

@LowLevelLearning

11 ай бұрын

You bet!

It's funny how half of the things are just "do it like in rust" lol (e.g. having only one level of inheritance and only with abstract classes as parents is basically rust traits)

@theultimateevil3430

11 ай бұрын

Rust is made with a 40 years of history of writing terrible code in C++. Makes sense they dropped some concepts that have been proven to be extremely bad. You could see the same in earlier languages, for example, C# and Java removed the multiple inheritance and encouraged the use of interfaces. All mainstream languages (incl. C++) play with the functional programming. The most modern languages (Go, Rust, Zig) drop the exceptions in favor of C-style error handling with syntactic sugar. This is basically a trial-and-error on the scale of generations of programmers, and while it's painfully slow, it's a steady progress towards the perfect programming language in which it's harder to write bad code. Because if it's possible to write shit, it will be done, and very fast. Javascript programmers cried in tears with jQuery until came the frameworks that enforce their architecture on you (React, Vue, Express, Nest, etc.)

@sebastianfia9541

11 ай бұрын

@@theultimateevil3430 Yes I totally agree with your analysis

C++ is plain awesome.

Very nice video!

C++20 or C++23 has this new feature called concepts which are essentially better versions of interfaces, especially when traditional c++ interfaces are merely classes with only pure virtual functions.

@sebastiangudino9377

7 ай бұрын

I would argue they are very different ideas. Concepts are a about controlling the data that goes in and out of objects and functions, and is related to the idea of constraints. Interfaces on the other hand are SUPPOSED to be just abstract clases with pure virtual functions. They are a way to structure the SHAPE of your data so that it can be composed though HAS and IS relationships (The core of OOP) through Interface Inheritance and composition. I don't see concepts as a replacement for interfaces in the OOP sense. But I do like them a lot! And for small snippets of code they might entirely remove the need for OOP in the first place. Which would increase code readability and usability

@Tomyb15

7 ай бұрын

@@sebastiangudino9377 you are correct, but I see interfaces as being at least somewhat related to having constraints on functions. C++ is very oop, but if we think of the idea of an interface as (a worse version of) typeclasses in haskell or traits in Rust, then the "application" of an interface in a function signature essentially becomes a constraint on the types of such parameters that have that interface. However, I've only superficially looked at concepts in c++ as it's not a language I use much, but that was the impressions that I managed to understand from this new feature.

@sebastiangudino9377

7 ай бұрын

@@Tomyb15 I see. I think that's a valid way to think about them! But I still think C++ lands itself better to the classical "Control shape of data" rather than the "Control usage of data" that languages like Haskell have. This is specially important for optimization purposes. This is the reason why things like move semantics are something to keep in mind in C++. But that said, rust has showed us how both paradigms can coexist in a pretty elegant way. So I am very open to new ideas in Moden C++

tabs vs spaces should focus on one thing, and one thing only: accessibilty. using spaces (especially small amounts of spaces like 2) over tabs forces people with vision impairment that need a larger tab-width to properly be able to code, to either reformat the entire code that they are working on (twice), not contribute to that project at all or just live with it and suffer, which i think is unacceptable.

@heavymetalmixer91

11 ай бұрын

2 spaces has never been enough for me, so I go with 4 instead like in Python, so I set my editor to introduce the 4 spaces everytime I press Tab.

@m4rch3n1ng

11 ай бұрын

@@heavymetalmixer91 yeah but what if someone needs to use 8 space width to properly code? or someone has a text size so large they have to use 2 spaces because otherwise the code won't fit in the width? if you use tabs and set your editor to display the tabs as 4 spaces, then these two can set their own editor to display 8 spaces or 2 spaces respectively, and all of you can code with your own preferences. it's like forcing someone to use a specific font: don't

@PinakiGupta82Appu

11 ай бұрын

@@m4rch3n1ng hit the tab to insert 4 spaces. That's what he said, as much as I understood. Tabs are not allowed in many places. A code formatter will solve the problem you mentioned. Tabs characters will be converted to spaces, anyways.

@m4rch3n1ng

11 ай бұрын

@@PinakiGupta82Appu yes but you should hit the tab key to insert a tab character, so other people can configure how code looks to them. i know about the convenience, but forcing someone else to change your formatter and reformat your code, or worse, manually format your code (as is the case in the majority of javascript repos) to be able to code for literally no benefit (other than the benefit of forcing your style preferences on someone else) is extremely unnecessary and inaccessible for people who need it edit for clarity: this is specifically about open source projects or other types of projects where multiple people work on the same code. i don't care what you do on your own disk, but you should at least think about other people when opening up your code for everyone else, especially if you are a company that tries to pride itself on "inclusivity"

@PinakiGupta82Appu

11 ай бұрын

@@m4rch3n1ng They will probably give you an Artistic Styler or a Clang-Format script. You'll have to run it to comply with the standard before committing the changes to git, even if the code looks bad according to someone else's preferences. Different people may have different preferences. It's not always possible to force them to accept what I want. Tabs are not allowed in many places, even if it solves the readability problem.

I think that if you don't use RAII and exceptions, you shouldn't bother with C++ at all. Just use modern C. Yes, that requires writing wrapper code for all incorrectly (that is, without RAII and exceptions) written C++ code.

@anonymousnearseattle2788

11 ай бұрын

Some of us still enjoy having access to classes, virtual methods, and templates. All of my C++ projects have exception frame generation disabled.

@valizeth4073

11 ай бұрын

Modern C is an oxymoron.

@MikkoRantalainen

11 ай бұрын

@@valizeth4073 C23 standard is being specified *this year* - what do you consider "modern"?

@christianknuchel

11 ай бұрын

Each environment has its requirements, and with that, opinions on how to write code are different as well. I think it's a good idea not to get wrapped up too much into any one of them, lest one becomes prone to shoehorning paradigms into environments where they're not a good fit.

The composition vs inheritance debate was always obvious to me. Inheritance means something "is" that class with extra stuff, composition means a class "has" another class. A car isn't an engine with extra stuff, a car has an engine. A child isn't their mom and dad, a child has mom and dad.

these are good principles which most of experienced developers find and follow by themselves

I completely agree with Exceptions, they should only be used in extreme rare exceptions and never replace an error handling. When an exception gets through then you as a developer have made a very bad design.

@nothingisreal6345

10 ай бұрын

Container.GetElementByID. What do you reasonably return when the container does not contain a matching element? Null -> null pointer access (exception). Default element - what should that even be? A tuple (success, element)? Callers will forget to evaluate success and element still needs to be a nullable pointer. Unions are the only thing that comes to mind. But then the interface of the method MUST list all possible result type and the error cases (which are an implementation detail) get exposed. This will hinder changing the internal implementation. Exception decouple the implementation details from the caller. A call must expect the unexpected. It get's even worth for Class.DoSomething(); A call expects something to be done But what to do when it simply can't be done? What if DoSomething() has to call other methods and those fail? Simply go back to learning exceptions...

@ColinGrealy

10 ай бұрын

Container.GetElementByID is a textbook example of when *not* to use exceptions. The function itself has no possible way of controlling what ID is passed into it. By definition, an element with an arbitrary ID not being found is not exceptional (you could argue that for the set of all possible IDs, only a tiny percentage are probably in the container). So yes, return some value (tuple, union, end()) for element not found and then slap your clients for not checking the return value. That said, imagine your container is somehow broken. Let’s say it wraps an array pointer or a linked list. If the internal state of the container is invalid, THAT is an exceptional circumstance.

My code is in no way future-proof, it is overly compact and simultaneously not, it is the embodiment of spaghetti code and I myself have a hard time reading it at times. This is a mistake. Glad Google isn't making it. Edit: dang didn't expect the replies to be an argument on the readability of code relating to how easy or hard the code was to write lmao

@pierelenigus8598

11 ай бұрын

If it was hard to write it should be hard to read.

@fuery.

11 ай бұрын

@@pierelenigus8598 I mean you have a point

@Henrix1998

11 ай бұрын

@@pierelenigus8598 No, not really. Hard ideas can be expressed in a simple way in most cases.

@DajesOfficial

11 ай бұрын

@@pierelenigus8598 it should not if it's a finished work. After you wrote a working implementation it is messy indeed, but then you usually can optimize readability by a lot without chaning the logic. The code is finished not when there is nothing to add but when there is nothing to remove.

@pierelenigus8598

11 ай бұрын

@@DajesOfficial Well if you're not busy and in demand problem solving solution provider I reckon one would have time for all that. As far as I know the real world a working solution is a completed solution.

I am not even a programmer, but it was pretty interesting to watch! Thanks for the video!

Why is it considered good when the indention is using spaces to force the same width on every developers editor? The important thing about indention is the *level* of it to convey the depth of a line in a code strcuture. A tab perfectly matches that. One tab = one level. And the width of the code is configurable to individual preferences without interfering with other developers. Depending on the monitor a dev uses (or when having a visual impairment) you might want to have a visually easier to distinct indention (like on a high resolution / high dpi one) to see the levels better. Or you want to utilize it to force yourself to write better code by making it painful to deeply nest. I absolutely don't see why on earth using spaces - especially just 2 per level - is a good idea... If you disagree, feel free to throw convincing arguments at me

@RigelOrionBeta

11 ай бұрын

Consider a function that has a lot of params. What do you do? You put them on the next line. But what if you want to line them up with the previous params? You cant do that with tabs, because tabs are differing in size. Your lined up params may look nice on your screen, but not someone else's who has configured tabs to be different. There are numerous other examples of why tabs are worse than spaces. I used to be a fan of tabs, but once I started working with other developers on large projects, I realized tabs are not a good idea. There are too many formatting problems with them. Instead, your project should agree on an indentation size of spaces, say 2 or 4. Then configure your editor so that hitting the tab key adds 4 spaces instead of a tab. The key thing here is you can get all the functionality of the tab key, without all of the visualization differences that the tab character will create.

@pauldegroot1959

11 ай бұрын

@@RigelOrionBeta "But what if you want to line them up with the previous params? You cant do that with tabs" You can use tabs to get to the right indentation level, then line up with spaces.

@RigelOrionBeta

11 ай бұрын

@@pauldegroot1959 That's pretty error prone. How can you easily tell what white space is a tab or a space? At that point, you're mostly just using spaces anyway for alignment. In fact, if you just configured your tab to put spaces instead, you'd save time tabbing to the alignment point, since it inserts multiple spaces, instead of using spaces. You'd get there 2-4 times faster than if you used spaces. There is really no point. I used to do exactly what you are describing, but you can never be immediately sure that you have tabs and not spaces. Why bother?

@ghosthunter0950

11 ай бұрын

​@@RigelOrionBeta I didn't have an opinion but I think you've convinced me on spaces.

@monochromeart7311

11 ай бұрын

​@@RigelOrionBeta 1. You can make whitespace visible. 2. Tabs are for indention, spaces are for alignment. 3. You can align like the following: int long_function_name( TypeFoo param1, TypeBar param2, Data ¶m3 ) { .... }

A fun thing, this is how google does INTERNAL things. Here they care about developers. They FORCE you to break a lot of these if you use their IDE's. Because Google does not care about developers that are not working for them.

so that last part is to follow SOLID design. Each class holds unique concerns, and use composition over inheritance, so that functions and responsibilities stay separated. Inheritance has its place, but is not engineered correctly. With classes that mainly hold data and handle some transformations inheritance is not well suited. For objects that build upon each other like window systems, then behavioral design there says that inheritance is good. With all of this said it is impossible to write debt free code. We are developers. The use of tabs should be encouraged. Set your editors as a preference. We engineer differently and have unique styles. Some solutions are only found when people can be themselves. All of this will lead to debt though in the sees of style. The issue here of debt free code is not the style of coding that one uses. The issue is how to engineer properly. This video touched on using interfaces. Interfaces are really important and needed in all projects. We should be designing for interfaces as that allows for modularity. Need a new way to access data? Not an issue as along as the data access returns all of the correct data sets. Which data sets are there well that is where an interface comes in, as the functions should be set based on the business logic necessary to run the front end. In this way we can reduce debt as we are only changing one concern at a time. Debt is not style, but failings in logic. I also disagree with the non-use of exceptions. Exceptions are not just program breaks, but are failures in design, and should be looked into. Without the exception we have no idea why the program just crashed. What is needed is a better way to handle logging. They will need a standard library for logging exceptions. It is now each concerns responsibility to report the error to the logging and then handle the exception per the concern. In the example in the video the function g handles no exceptions from H or more likely handles errors in H by raising the exception again, which passes it up to F. This is an example of poor design. where is the separation of concern? if function F is the concern and functions G and H only perform data manipulation, then the responsibility for error is at function F. if each function is its own concern, then we need a way to decouple these nested calls.

The limited inheritance rule reminded me a little of XML.

100% agree with the first rule. "Use 2 spaces" I can begin my weekend now 😎

1:26 the difference in tab length is noted as a benefit by tab fans. People have different preferences for indentiation and tabs allow them to use it freely. If tabs are used for indent and spaces for alignment code which should line up does line up. 2:24 a) to be precise, it's a function template, not a function b) it doesn't return Foo but std::unique_ptr 2:50 the auto issue is controversial - a lof of editors will support rich code information and display what auto deduces too. Looking at the committee, opinions differ widely. IMO worth to mention. 4:00 I know it's an artificial example but in an education video you should do some effort and write a standard exception class caught by const reference. 5:00 a) missing semicolon at the end of class definition b) mixed namespace use: std::string but not std::uint32_t Also please note that Google's Style guide has been criticized by C++ creators. A lot of C++ Core Guidelines conflict with Google's guide. Google's guide is aimed mainly at Google's legacy code. Core Guidelines recomment NOT TO use it.

@user-yk1lz7gb2t

10 ай бұрын

Man, honestly, you catch errors better than my compiler does 😂

@Xeverous

10 ай бұрын

@@user-yk1lz7gb2t nah, this channel is simply of low quality

@isodoublet

10 ай бұрын

" If tabs are used for indent and spaces for alignment code which should line up does line up." Or, you can just use the one character that will always work and always be correct. I have never seen tabbed code that wasn't messed up. Not once. It's impossible to maintain invisible characters.

@Xeverous

10 ай бұрын

@@isodoublet I frequently see pure-space code that also isn't aligned. Some people will fail at both no matter what.

@isodoublet

10 ай бұрын

@@Xeverous Everyone fails at aligning tabs, so that's no excuse

I just "love" virtual inheritance 😆

Awesome, Sunday coffee and a new coding philosophy

@LowLevelLearning

11 ай бұрын

Enjoy!

Why is there an argument about tabs vs spaces? A tab can be converted to spaces, and it is a single key press. It can be converted in your editor to match any number of spaces. On the other hand, manually pressing the space bar for 2 or 4 spaces has issues if you don't tap the right number of times, it is harder to do and more error prone. And if somebody else sees the code in their editor, they might not be able to change the spacing to match their preferences. I can't believe this argument is still happening. Tabs should win outright with no competition. Oh and also tabs are smaller in file size. Need more persuading?

@vaijns

11 ай бұрын

tabs vs spaces is not about pressing the tab key on your keyboard or the space key (it's always pressing tab). It's just about what is inserted when pressing tab. (mostly) all editors give you an option to define how many spaces should be inserted by the press of tab (or no spaces but stick with tabs). While tabs allow every user to define the width of their indentation themselves, spaces force the width which helps with consistency (depending on how wide your tabs are you might add more or less of them in your code, which could look weird on someone elses device).

@BlueEyedSexyPants

11 ай бұрын

Absolute horseshit. No one who uses spaces ever presses the space bar to insert their spaces. They let their editor insert 2-4 spaces when they do their "single key press" of the tab key. You don't have to press it the right number of times. The workflow is exactly the same. The problem is when tab people try to use their damn tab characters in other places than the beginning of the line, they fuck up everyone else's code alignment if the settings are not exactly the same between editors. Tab people end up with alignments like: const int short\t\t\t= 1; const int longvariablename\t= 2; And it aligns perfectly on their tabwidth, so they didn't think that it wouldn't work on anyone else's. If the advantage is that everyone can set their own tabwidth, why do they introduce code that misaligns with different tabwidths? Another example is for function signatures where the parameters are on different lines. Spaces is the only way to align them with the start of the first param. If tab people used editors that could put tabs at the beginning of a line and spaces in the middle, that might be okay, but they never do. They litter the code base with awful tabs in the middle of lines. I can't believe this argument is still happening. Need more persuading?

@vaijns

11 ай бұрын

@@BlueEyedSexyPants I think as long as you're consistent within a codebase both are fine. I for example prefer tabs to have my indentation just the width I want. And I don't use any tabs for aligning assignments and for function signatures I just add one tab to the horizontal position where the signature started (usually the return type). I agree that lining up with tabs doesn't make sense. But it comes down to how you format your code if it is a problem or not. As I said, just keep it consistent within the codebase. If I'm working on someone elses codebase, surely I don't force my tabs but I also try to format my code based on what's already there (like, are function signatures aligned at the same horizontal position or not, ...). A lot of code I'm working with uses 4 spaces and I'm not a huge fan of it as I think that's too wide. But that's not my choice to make if it's not my codebase.

@BlueEyedSexyPants

11 ай бұрын

​@@vaijns Yeah, if everyone in a codebase is perfectly consistent, that's fine. So if the codebase wants you to set your tabwidth to 8 but you prefer 2, you either need to set it something you don't enjoy, losing the supposed advantage of tabs completely, or you need remember every time you insert your 2-space tab that everyone else will see it 4 times larger. (8 is insane, of course, but just for the purposes of illustration.)

@9SMTM6

11 ай бұрын

@@BlueEyedSexyPants that is a good argument with mixed usage in situations other than code indenting. Ultimately I've just accepted the situation as is. However sometimes it's very much annoying, eg. when I write documentation with TeX and similar. You can include code directly from the source file, which is my preferred way as it avoids me forgetting to update code after changes. But if you used 4 space indenting (as is the default in most Code bases and also most formatters), this makes most code hard to include, as that quickly gets too long with little indentation. Similar thing when I open some code in a small window /on a small screen.