Return the starting position of the last occurrence of the specified substring within this string, if such a sequence can be found in this string (on or before the optionally specified position if such a position is specified) using CHAR_TRAITS::eq to compare characters, 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> >) `

Synopsis

Declared in <bslstl_string.h>

template<class STRING_VIEW_LIKE_TYPE>
size_type
rfind(
    STRING_VIEW_LIKE_TYPE const& substring,
    size_type position = npos) const noexcept(true);

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