std::basic_string::find_first_of
From cppreference.com
< cpp | string | basic string
| size_type find_first_of( const basic_string& str, size_type pos = 0 ) const;
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| size_type find_first_of( const CharT* s, size_type pos, size_type count ) const;
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| size_type find_first_of( const CharT* s, size_type pos = 0 ) const;
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| size_type find_first_of( CharT ch, size_type pos = 0 ) const;
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Finds the first character equal to one of characters in the given character sequence. Search begins at pos, i.e. the found character must not be in position preceding pos.
1) Finds the first character equal to one of characters in str.
2) Finds the first character equal to one of characters in the first count characters of the character string pointed to by s. s can include null characters.
3) Finds the first character equal to one of characters in character string pointed to by s. The length of the string is determined by the first null character.
4) Finds the first character equal to ch.
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[edit] Parameters
| str | - | string identifying characters to search for |
| pos | - | position at which to begin searching |
| count | - | length of character string identifying characters to search for |
| s | - | pointer to a character string identifying characters to search for |
| ch | - | character to search for |
[edit] Return value
position of the found character or npos if no such character is found.
[edit] Exceptions
1,4)[edit] Notes
traits::eq() is used to perform the comparison.
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| find characters in the string (public member function) |
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| find the last occurrence of a substring (public member function) |
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| find first absence of characters (public member function) |
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| find last occurrence of characters (public member function) |
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| find last absence of characters (public member function) |
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