Luna::BasicString::rfind

usize rfind(const BasicString &str, usize pos=npos) const

Finds the last occurrence of the specified character sequence in the string.

Parameters

• in str

  The string that holds the character sequence to search.

• in pos

  The index at which to begin searching. The character at pos is included in searching. If pos >= size() (including npos), the search will start from the end of the string.

Return value

Returns the index of the first character of the found occurrence. The index is an offset from the start of the string, not the end. Returns npos if no such occurrence is found.

If str.empty() is true, returns pos if pos < size(), returns size() otherwise.

npos is always returned if size() == 0, even if str.empty() is true.