Check if an object does not contain prohibited elements — excludes

This function checks that x does not include any of the illegal elements. x must be the same type as illegal. Factors are treated as character vectors.

Usage

excludes_advanced(x, illegal)

Arguments

x: An object to check
illegal: The prohibited elements to check for

Value

Returns TRUE if x is the same type as illegal and x does not include any of the illegal elements. Otherwise returns a string representing the appropriate error message to display