Find the first character belonging to the specified set.

Synopsis

Declared in <bslstl_string.h>

template<class STRING_VIEW_LIKE_TYPE>
size_type
find_first_of(
    STRING_VIEW_LIKE_TYPE const& characterString,
    size_type position = 0) const noexcept(true);

Description

Return the position of the first occurrence of a character belonging to the specified characterString, if such an occurrence can be found in this string (on or after the optionally specified position if such a position is specified), and return npos otherwise. The behavior is undefined unless the conversion from STRING_VIEW_LIKE_TYPE to `bsl::basic_string_view<CHAR_TYPE, CHAR_TRAITS>` does not throw any exception. Note that this behavior differs from the behavior implemented in the standard container, where the following noexcept specification is used: ` noexcept( std::is_nothrow_convertible_v<const T&, std::basic_string_view<CharT, Traits> >) `

Return Value

position of the first matching character, or npos

Parameters

Name

Description

characterString

pointer to characters

position

starting index

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