Re: [boost] [Convert] std::isspace requires unsigned #28

On 21/03/2017 13:16, Vladimir Batov via Boost wrote:

Damn confused.

WAS: std::isspace(ch); THEN: std::isspace(static_cast<unsigned char>(ch));

THEN I realized I needed wchar_t support and therefore needed also std::iswspace(). So, for such a seemingly trivial thing I ended up with the following ugliness: [...] That raises two questions.

1) Is it really the only way to go or I went senile or fell behind language-wise? 2) What about std::iswspace? Does it also need static_cast?

Apologies for seemingly naive questions but I really feel startled.

I haven't verified but presumably std::char_traits::to_int_type() would convert correctly for input to std::isspace/iswspace. And as Glen suggests, simple overloads seem tidier.