store_into does not properly handle numeric types

[Redbeanw44602]

argparse/include/argparse/argparse.hpp

Line 714 in d924b84

var = details::parse_number<T, details::radix_10>()(s);

store_into treats all numbers as decimal numbers, which is incorrect.

If we use:

uint64_t foo;

program.add_argument("foo")
    .scan<'x', uint64_t>()
    .store_into(foo);

./foo 0xABCD
!!! std::invalid_argument will be thrown: pattern '0xABCD' does not match to the end

But program.get<uint64_t>() can work properly.

---

Another observation is that when using get<T>, the parsing only happens once, while store_into happens twice. I think this could be optimized. 🤔

[wanjiadenghuo111]

亲，来信已经收到！祝你快乐！