nix regex / published by https://github.com/dacr/code-examples-manager #5bb58db7-1af1-41a7-b835-3f1fc55c3baf/bd98af9ebc85a11957c64d02aa3ec11cfeb9bf14

regex.nix

## summary : nix regex
## keywords : nix, regex
## publish : gist
## authors : David Crosson
## license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
## id : 5bb58db7-1af1-41a7-b835-3f1fc55c3baf
## created-on : 2025-02-07T17:13:13+01:00
## managed-by : https://github.com/dacr/code-examples-manager
## run-with : nix eval --file $file
#### run-with : nix-instantiate --eval $file

let
  results = builtins.split "<([^>]+)>" "John Doe <[email protected]>";
in with builtins; {
  first_matching_1 = (head (head (tail results))) ;
  first_matching_2 = (elemAt results 1) ;
}