'Contains' function [duplicate]

Question

I need to know if there are any functions available in R that allow me to check if one string contains a substring and return a boolean. I've already tried str_detect but that doesn't suit my need.

For example:

string = 12345REFUND4567

and

substring = REFUND

contains(string,substring) would ideally return TRUE since 12345REFUND4567 contains REFUND.

contains(string,substring) is just the format I'd imagine the function to take.

Answer 1

You probably are looking for grepl:

string <- "12345REFUND4567"
grepl("REFUND", string, fixed=TRUE)

[1] TRUE