Question

Is it possible to apply filter based on a regular expression? What I had in mind was something like

(filter #"<+\p{Alnum}+>" ["abc" "<def>"])

to return

=> ["<def>"]

Thanks in advance for hints.

Answer 1

Put your regex inside an anonymous function that tests matching to your regex. The general form would be:

(filter #(re-matches REGEX %) SEQUENCE)

Where REGEX is the regex that you’re interested in, and SEQUENCE is the sequence that you’re interested in. Trying your example,

user> (filter #(re-matches #"<+\p{Alnum}+>" %) ["abc" "<def>"])

("<def>")