std::ctype<CharT>::scan_not, std::ctype<CharT>::do_scan_not
From cppreference.com
Defined in header <locale>
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public: const CharT* scan_not( mask m, const CharT* beg, const CharT* end ) const; |
(1) | |
protected: virtual const CharT* do_scan_not( mask m, const CharT* beg, const CharT* end ) const; |
(2) | |
1) Public member function, calls the protected virtual member function
do_scan_not
of the most derived class.2) Locates the first character in the character array
[
beg,
end)
that does not satisfy the classification mask m, that is, the first character c
such that is(m, c) would return false.Contents |
[edit] Parameters
m | - | mask to search for |
beg | - | pointer to the first character in an array of characters to search |
end | - | one past the end pointer for the array of characters to search |
[edit] Return value
Pointer to the first character in [
beg,
end)
that doesn't satisfy the mask, or end if no such character was found.
[edit] Example
Run this code
#include <clocale> #include <iostream> #include <iterator> #include <locale> int main() { std::setlocale(LC_ALL, "en_US.utf8"); std::wcout.imbue(std::locale("en_US.utf8")); auto& f = std::use_facet<std::ctype<wchar_t>>(std::wcout.getloc()); // skip leading whitespace wchar_t s1[] = L" \t\t\n Кошка"; const wchar_t* p1 = f.scan_not(std::ctype_base::space, std::begin(s1), std::end(s1)); std::wcout << '\'' << p1 << "'\n"; // skip leading digits wchar_t s2[] = L"123456789ネプネプ"; const wchar_t* p2 = f.scan_not(std::ctype_base::digit, std::begin(s2), std::end(s2)); std::wcout << '\'' << p2 << "'\n"; }
Output:
'Кошка' 'ネプネプ'
[edit] See also
locates the first character in a sequence that fails given classification, using the classification table (public member function of std::ctype<char> )
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[virtual] |
locates the first character in a sequence that conforms to given classification (virtual protected member function) |