std::isspace(std::locale) - cppreference.com

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# std::isspace(std::locale)

From cppreference.com
< cpp‎ | locale

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 ctype facet.

### [edit] Parameters

ch | - | character
loc | - | locale

### [edit] Return value

Returns true if the character is classified as a whitespace character, false otherwise.

### [edit] 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);
    }

### [edit] 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

### [edit] See also

isspace | checks if a character is a space character (function) [edit]
iswspace | checks if a wide character is a space character (function) [edit]

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