| Defined in header <locale> | ||
|---|---|---|
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.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 |
Return value
Pointer to the first character in [beg, end) that doesn't satisfy the mask, or end if no such character was found.
Example
#include <locale>
#include <iostream>
#include <iterator>
int main()
{
auto& f = std::use_facet<std::ctype<char>>(std::locale(""));
// skip leading whitespace
char s1[] = " \t\t\n Test";
const char* p1 = f.scan_not(std::ctype_base::space, std::begin(s1), std::end(s1));
std::cout << "'" << p1 << "'\n";
// skip leading digits
char s2[] = "123456789abcd";
const char* p2 = f.scan_not(std::ctype_base::digit, std::begin(s2), std::end(s2));
std::cout << "'" << p2 << "'\n";
}Output:
'Test' 'abcd'
See also
| [virtual] | locates the first character in a sequence that conforms to given classification (virtual protected member function) |
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