Let's get comfortable with SFINAE (C++)

In this video we get comfortable with an advanced C++ topic: SFINAE
SFINAE stands for Substitution Failure Is Not An Error. It is a C++ template metaprogramming technique that allows us to choose between implementations depending on the "characteristics" of a type.
In other words it's not about what a type is, but what it can do.
It's a very powerful technique that allows us to write generic code that can be used with different types, and it's used extensively in the standard library.
I am planning to write a blog post about it so that you can have the code in a more usable format.
I will do this once I reach 1000 subscribers, so if you liked the video and would like to get hold of the code, please subscribe and share the video with your friends. 🎉
2024 Update: 1000 Subscribers reached!
Here's the tutorial in a written form: platis.solutions/blog/2024/01...
00:00 Introduction, disclaimers and prerequisites
02:31 SFINAE: What and why?
05:54 SFINAE alternatives
09:43 Basic SFINAE without std::enable_if
16:26 std::enable_if
19:31 SFINAE with std::enable_if
23:09 Creating traits
26:30 std::void_t
28:55 Introspection with declval
30:36 SFINAE on class member functions
32:15 Disabling or enabling functions with SFINAE
34:06 SFINAE and fold expressions
34:42 Conclusion and takeaways

[@platisd]

1000 subscribers reached! Here's the written tutorial: platis.solutions/blog/2024/01/27/lets-get-comfortable-with-sfinae/

[@heartbrave7476]

超级棒的视频，深入浅出，娓娓道来，使我明白了很多关于C++的用法。

[@hr1100]

Thank you for this. I've read several articles and watched cpp con presentations. Your take on the subject was the best i've encountered yet all because you eased us in with the very basic building blocks first.

[@_noisecode]

Great, approachable, yet in-depth tutorial on an advanced topic. KZbin needs more content just like this.

[@platisd]

Thank you so much for the kind feedback! :}

[@pawankataria5970]

Thanks for this, you made SFINAE easy for the world !

[@vukasinstrbac3742]

A good explanation. A perfect continuation would be achieving the same thing with concepts.

[@zeez7777]

This is truly an amazing video. Thank you for this presentation.

[@user-fz5pw5kg3w]

Thank you! Your examples were excellent, and I came away with a better understanding of SFINAE and alternatives.

[@lullabydayal1202]

I've listened to Dimitris talk in C++ Athens meetup. This is a brilliant session covering SFINAE; its alternatives and some cool techniques with it (I wouldn't know). I'm planning to revisit this video again for referring some advanced topics discussed whenever I need. I would recommend this video as a great watch to all C++ enthusiasts.

[@Chupe_chupe]

Great video

[@UsernameUsername0000]

Perfect presentation & pace!

[@eotcoldhymns2930]

really great video from scratch

[@MrCiscoski]

Thanks this was really well presented

[@gatita_liliana]

ahhhhhhhhhhhhhh great video

[@pengliu9987]

Nice and informative video. One suggestion to the terminology of "subclass" at 14:45 (At kzbin.info/www/bejne/Y4uadoKNi9CVaa8). Things such as typename S::IpV4, S::IpV6 in C++ are called member type, while "subclass" typically means "derived class".

[@platisd]

You're correct! I hadn't noticed this until you mentioned it. Another term could be "nested class". 👍