Difference between revisions of "cpp/locale/isspace"
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Revision as of 07:15, 25 April 2020
| Defined in header <locale>
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| template< class charT > bool isspace( charT ch, const locale& loc ); |
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Checks if the given character is classified as a whitespace character by the given locale's ctype facet.
Contents |
Parameters
| ch | - | character |
| loc | - | locale |
Return value
Returns true if the character is classified as a whitespace character, false otherwise.
Possible implementation
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); } |
Example
Demonstrates the use of isspace() with different locales (OS-specific).
Run this code
#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"); }
Output:
isspace(' ', locale("C")) returned false
isspace(' ', locale("en_US.UTF8")) returned trueSee also
| checks if a character is a space character (function) | |
| checks if a wide character is a space character (function) |
