Difference between revisions of "cpp/locale/isspace"
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m (r2.7.3) (Robot: Adding de, es, fr, it, ja, pt, ru, zh) |
m (Shorten template names. Use {{lc}} where appropriate.) |
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===Parameters=== | ===Parameters=== | ||
| − | {{ | + | {{par begin}} |
| − | {{ | + | {{par | ch | character}} |
| − | {{ | + | {{par | loc | locale }} |
| − | {{ | + | {{par end}} |
===Return value=== | ===Return value=== | ||
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===See also=== | ===See also=== | ||
| − | {{ | + | {{dsc begin}} |
| − | {{ | + | {{dsc inc | cpp/string/byte/dcl list isspace}} |
| − | {{ | + | {{dsc inc | cpp/string/wide/dcl list iswspace}} |
| − | {{ | + | {{dsc end}} |
[[de:cpp/locale/isspace]] | [[de:cpp/locale/isspace]] | ||
Revision as of 19:09, 31 May 2013
| 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 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 true
