☭
@wallhackio I just saw this picture. What is a decltype? 
https://en.wikipedia.org/wiki/File:20160121_CppFRUG_Joel_Falcou_CppQuiz_3.jpg
@vaporeon_ i forgor 💀
@wallhackio @aescling Reported. Clodsire must not forget the C++ standard, who else can I direct C++ questions at? 
@vaporeon_ @aescling decltype eats an expression and the result is the type of that expression.
This is what it's usage looks like. (This a silly thing to do, of course. But I wanted a simple demonstration of the syntax)
int a = 3;
decltype(a) c = a;
Apparently there are situations where manually writing the type of something is really really nasty and just saying "look C++, it's whatever the type of this thing is" can be convenient
Follow
@wallhackio @vaporeon_ at that point you might as well use auto instead
@aescling @vaporeon_
autodoes not treat references types the way you might expect: https://stackoverflow.com/a/12084107