I had a function like this:

    extern void Func(string_view);

And I wanted to call it as follows:

    string str("monkey5");
    Func( string_view(str).remove_suffix(1u) ); // remove the '5'

but this didn't compiler because 'remove_suffix' returns void.

Would it not have made sense for 'remove_suffix' to be defined as:

class std::string_view {
    string_view &remove_suffix(size_t) &;
    string_view &&remove_suffix(size_t) &&;
    string_view &remove_prefix(size_t) &;
    string_view &&remove_prefix(size_t) &&;
};

so that we can do stuff like:

    string str("monkey5");
    Func( string_view(str).remove_suffix(1u).remove_prefix(2u) );