Pattern arguments in stringr are interpreted as regular expressions after any special characters have been parsed. In R, you write regular expressions as ...
Regular expressions can be made case insensitive using (?i). In backreferences, the strings can be converted to lower or upper case using --L or --U. (e.g. --L ...
Regular expressions can be made case insensitive using (?i). In backreferences, the strings can be converted to lower or upper case using --L or --U. (e.g. --L ...
In R, you write regular expressions as strings, sequences of characters surrounded by quotes( ) or single quotes ( '' ). Some characters cannot be directly ...