Ayrosa questions

• I'd like to see an example of a function name being ignored in a nested-name-specifier
• Why doesn't the compiler complain in the definition of the Derived class constructor?
• Is there any reason why the `explicit` keyword is used in the constructor of std::auto_ptr?
• Where in the Standard does it say that the declaration `auto f()() ->int;` is not allowed?
• After sending a WM_CHANGEUISTATE to the window app, the mnemonics are not shown on the system menu, when the menu is accessed with the mouse
• Where in the C++ Standard is `a = b + {1, 2}` disallowed in the snippet below? [duplicate]
• Microsoft OpenType specification for cmap
• Why the sizeof(D) increased by 8 bytes in VS2015 when I derived D from a virtual base?
• The type of 'i' below in main(). Why is it an int&?
• How can `f();` be a declaration below?

Ayrosa answers