strs_rfind: Find the last occurrence of a substring in a string
Description
strs_rfind locates the last occurrence of a specified substring within each
element of a character vector. It is similar to Python's str.rfind()
method.
Usage
strs_rfind(string, substring)
Value
An integer vector of the same length as string, with each element
representing the starting position of the last occurrence of substring in
the corresponding element of string. If the substring is not found, the
function returns NA for that element.
Arguments
string
A character vector where each element is a string to search.
substring
The substring to find within each element of string.
