anthonywilliams / strong_typedef Goto Github PK

I watched your CppNow presentation and I really like this approach to strong typedefs.

Have you thought about making this a standard library proposal for C++23?

I know that's a lot of work, but I'd be willing to collaborate to make it happen. I'm familiar with LaTeX (see my book here), so that's not a problem for me.

I didn't spot the following operators:

• bitwise: ~ & ¦ ^ << >>
• multiplicative: * / %
• unary+, unary-
• op= counterparts

Are these yet to be added?
Does op= fit in this approach? If not, what about "do as the ints do"?

Hi - this is pretty cool! But it uses std::is_literal_type, which is deprecated in C++17 and removed in C++20 - which makes this unusable in the majority of codebases I would assume. Any plan to address this?

A fairly common usage when dealing with arrays, is to have an index (or pointer) type, and another type being a difference between indices (or sometimes an unsigned size).

It would be great if I could define two strong types for these (let's call them I and D), such that:

• I - I -> D
• I + D -> I
• I - D -> I
• D + D -> D
• D - D -> D
• I comp I -> bool
• D comp D -> bool
• Maybe D * integral -> D? D / integral? D / D?
  All other operations would be forbidden.

Thank you for this library, which looks very interesting! I am working in C++11 at the moment and am not able to compile the test program (log attached). Would you be willing to make C++11 compatibility an option? Thank you for considering this request!

The log is for g++ -std=c++11 -g -o test_strong_typedef test_strong_typedef.cpp on gcc 9.3.0 x64.
c++11.log

Is it C++17 or C++20?