[Development] API style guide: scoped enum or not?

[Thiago Macieira]

On Friday, 5 May 2023 03:49:58 PDT Allan Sandfeld Jensen wrote:
> Wasn't there a new C++ proposal for decoupling the two separate features of
> enum class?

It's probably the using enum, which is C++20 and requires GCC 11 or Clang 13.
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1099r5.html

It does allow us to replace enums inside a class with an enum class and mostly 
retain source compatibility -- breaking only where regular enums decay to 
their underlying types.

But it doesn't help us in the other direction, which is to *use* the scope for 
flags. I tried several different things after posting the idea last night, but I 
haven't found a way to make this work:

QIODevice::OpenMode mode = QIODevice::OpenMode::ReadOnly;

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Cloud Software Architect - Intel DCAI Cloud Engineering
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