[kllrnohj]

std::mem_fn will effectively give you the underlying function that takes a pointer. Strictly speaking mem_fn is defined to generate the wrapper function, but in practice the optimizer is just going to strip that away and call the name-mangled function directly.

Example: https://godbolt.org/z/6Y1raxMce

[Matheus28]

You can just use member function pointers without the wrapper. The syntax for calling them is a bit uglier though.

[kllrnohj]

Yup, but then the call syntax is different so it fails to achieve the "Universal Function Call Syntax" that OP was asking for which std::mem_fn provides.

[gavinray]

Whoa, this is really cool, thanks for posting