Defined in header <locale> | ||
|---|---|---|
template< class CharT > bool isspace( CharT ch, const locale& loc ); |
Checks if the given character is classified as a whitespace character by the given locale's std::ctype facet.
| ch | - | character |
| loc | - | locale |
Returns true if the character is classified as a whitespace character, false otherwise.
template< class CharT >
bool isspace( CharT ch, const std::locale& loc ) {
return std::use_facet<std::ctype<CharT>>(loc).is(std::ctype_base::space, ch);
} |
Demonstrates the use of std::isspace() with different locales (OS-specific).
#include <iostream>
#include <locale>
void try_with(wchar_t c, const char* loc)
{
std::wcout << "isspace('" << c << "', locale(\"" << loc << "\")) returned "
<< std::boolalpha << std::isspace(c, std::locale(loc)) << '\n';
}
int main()
{
const wchar_t EM_SPACE = L'\u2003'; // Unicode character 'EM SPACE'
try_with(EM_SPACE, "C");
try_with(EM_SPACE, "en_US.UTF8");
}Possible output:
isspace(' ', locale("C")) returned false
isspace(' ', locale("en_US.UTF8")) returned true| checks if a character is a space character (function) |
|
| checks if a wide character is a space character (function) |
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https://en.cppreference.com/w/cpp/locale/isspace