std::wcsspn

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Strings library
Null-terminated strings Byte strings Multibyte strings Wide strings Classes basic_string char_traits
Null-terminated wide strings
Functions Character manipulation iswalnum iswalpha iswlower iswupper iswdigit iswxdigit iswblank (C++11) wctype iswctype iswcntrl iswgraph iswspace iswprint iswpunct towlower towupper wctrans towctrans Conversions to numeric formats wcstof wcstod wcstold wcstol wcstoll wcstoul wcstoull String manipulation wcslen wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm wcschr wcsrchr wcspbrk wcsspn wcscspn wcsstr wcstok Array manipulation wmemcpy wmemmove wmemcmp wmemchr wmemset

Defined in header <cwchar>
size_t wcsspn( const wchar_t* dest, const wchar_t* src );

Returns the length of the maximum initial segment of the wide string pointed to by dest, that consists of only the characters found in wide string pointed to by src.

Contents 1 Parameters 2 Return value 3 Example 4 See also

[edit] Parameters

dest	-	pointer to the null-terminated wide string to be analyzed
src	-	pointer to the null-terminated wide string that contains the characters to search for

[edit] Return value

the length of the maximum initial segment that contains only characters from wide string pointed to by src

[edit] Example

This section is incomplete

[edit] See also

wcscspn	returns the length of the maximum initial segment that consists of only the wide not found in another wide string (function)
wcspbrk	finds the first location of any wide character in one wide string, in another wide string (function)