On 2017-03-21 11:43, Gavin Lambert via Boost wrote:
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.
Thanks, Gavin, indeed I should have a dig in char_traits before re-inventing the wheel. Thanks. What about iswspace()? Does it have the same problem as std::isspace(), i.e. needs an explicit cast? Seems unlikely...