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  1. contents = 'var FOREGROUND_COLOR = \'#ffffff\';     
  2. var BACKGROUND_COLOR = \'#aaaaaa\'; 
  3. var BORDER_COLOR = \'#000000\';'
  4.  
  5. pattern = '(?<=(var BACKGROUND_COLOR = \'))(#[a-zA-Z\d]+)(?=(\';))'
  6. replacement = '#bbbbbb'
  7.  
  8. contents = contents.sub(/#{pattern}/m, replacement)
  9. puts contents;
  10. puts "\n"
  11. puts $1+$2+$3;
Success #stdin #stdout 0s 4760KB
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var FOREGROUND_COLOR = '#ffffff';     
var BACKGROUND_COLOR = '#bbbbbb'; 
var BORDER_COLOR = '#000000';

var BACKGROUND_COLOR = '#aaaaaa';
https://ideone.com/Ux1iA
language:
Ruby (ruby 2.5.5)
created:
11 years ago
visibility:
public

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