dugy / quick_arg_parser Goto Github PK

test2.cpp.zip

This is a slightly modified version of your short example. The efficiency option is now a std::vector

Here is some output:
% ./a.out -v -e 5
Folder .
Efficiency 5

% ./a.out -v -e 5,6
Folder .
Efficiency 5
Efficiency 6

So far, so good. But what about this?
% ./a.out -v -e 5 -e 6
Folder .
Efficiency 5

This is unfortunate. I think that options that specialize std::vector should allowed to work whether they arguments are in one list or several.

Here is some test code derived from your short example:
test.cpp.zip

Here is its output:
% ./a.out . --efficiency 9 -v
Folder .
Efficiency 9

% ./a.out . -e 9 -v
Folder .
Efficiency 9

These should also work according to the Posix getopt() spec, but they don't.
% ./a.out . -e9 -v
Switch group -e9 contains a switch that needs an argument

% ./a.out . -ve 9
Switch group -ve contains a switch that needs an argument

% ./a.out . -ve9
Switch group -ve9 contains a switch that needs an argument

This should work, but it doesn't:
% ./a.out . --efficiency=9 -v
Unknown switch --efficiency=9

Godbolt: https://godbolt.org/z/74v6n3

example.cpp
<source>(9): error C2668: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string': ambiguous call to overloaded function
C:/data/msvc/14.28.29333/include\xstring(2496): note: could be 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::basic_string<char,std::char_traits<char>,std::allocator<char>> &&) noexcept'
C:/data/msvc/14.28.29333/include\xstring(2413): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const )'
        with
        [
            _Elem=char
        ]
C:/data/msvc/14.28.29333/include\xstring(2754): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::initializer_list<_Elem>,const _Alloc &)'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
<source>(9): note: while trying to match the argument list '(MainArguments<Input>::Grabber<MainArguments<Input>::DummyValidator>)'
Compiler returned: 2

The weird thing is that everything works fine with GCC and Clang.

Hi,

Can you add support for C++ 11?

Thanks and great library.