std::isblank(std::locale)
From Cppreference
| C++ Standard Library | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Defined in header <locale>
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| template< class charT >
bool isblank( charT ch, const locale& loc ); |
(C++11 feature) | |
Checks if the given character is classified as a blank character by the given locale's ctype facet.
Contents |
[edit] Parameters
| ch | - | character |
| loc | - | locale |
[edit] Return value
Returns true if the character is classified as a blank character, false otherwise.
[edit] Equivalent function
template< class charT > bool isblank( charT ch, const std::locale& loc ) { return std::use_facet<std::ctype<charT>>(loc).is(std::ctype_base::blank, ch); } |
[edit] Example
Demonstrates the use of isblank() with different locales (OS-specific).
#include <iostream> #include <locale> template< class charT > void try_with(wchar_t c, const char* loc) { std::wcout << "isblank('" << c << "', locale(\"" << loc << "\")) returned " << std::boolalpha << std::isblank(c, std::locale(loc)) << '\n'; } int main() { const wchar_t IDEO_SPACE = L'\u3000'; // Unicode character 'IDEOGRAPHIC SPACE' try_with(IDEO_SPACE, "C"); try_with(IDEO_SPACE, "en_US.UTF-8"); }
Output:
isblank(' ', locale("C")) returned false
isblank(' ', locale("en_US.UTF-8")) returned true[edit] See also
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checks if a character is a blank character (function) |
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checks if a wide character is a blank character (function) |
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