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Check if a string contains a match to a regular expression
Display
"ok" if "abc 123 @#$" matches /\d+/
Loop through a string matching a regex and performing an action for each match
Create a list
[fish1,cow3,boat4] when matching "(fish):1 sausage (cow):3 tree (boat):4" with regex /\((\w+)\):(\d+)/
