Re:F-strings for C++26 proposal [pdf]
by TuxSH on Monday February 03, 2025 @06:50AM
(#42917273)
> In my opinion, C++ "concepts" are the least useful C++20 addition to the language - awful syntax, redundancy everywhere (multiple ways of writing the same thing).
They're not the least useful C++20 addition, in fact they're amongst the most useful ones.
In particular the addition of the "requires" expression is the real killer here.
> And for what? Potentially better error messages?
Removing even more enable_if and making template code even easier to read (you could do some of that with if constexpr + static_assert in C++17, but there were gotchas). Oh and it allows you to check for the presence of members in classes, which you couldn't do before.
They're not the least useful C++20 addition, in fact they're amongst the most useful ones.
In particular the addition of the "requires" expression is the real killer here.
> And for what? Potentially better error messages?
Removing even more enable_if and making template code even easier to read (you could do some of that with if constexpr + static_assert in C++17, but there were gotchas). Oh and it allows you to check for the presence of members in classes, which you couldn't do before.