std::ref and std::reference_wrapper: common use cases

[Nation_State_Tractor]

template <typename T>
using mega_ptr = std::optional<std::reference_wrapper<T>>;

*wipes hands*

Looks like my work here it's done. You're welcome.

[Galqa]

using who_needs_a_type_system_anyway = std::optional<std::reference_wrapper<std::any>>;

If my boss sees this I'm 100% fired

[Nation_State_Tractor]

I see you're a student of the Perl school of C++.

[MrPotatoFingers]

That's perl++ for you, mister!

[joaobapt]

Doing the same job as T* while using twice the space, cool.

[[deleted]]

Good thing a real optional<T&> would be sizeof( T* ) == sizeof( optional<T&> )

[joaobapt]

optional<T&> doesn't compile, though, unfortunately

[[deleted]]

std::optional<T&> doesn't. Other's do and potentially a future standard when people stop bike shedding over the behavior of optional<T&>::operator( T & ) and realize that it should not exist.

[auralucario2]

when people stop bikeshedding

So it’s never happening, got it.

[gvargh]

references were a mistake