Index string by regular expression : sub with regular expressions « String « Ruby

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  3. sub with regular expressions




Index string by regular expression


s = 'My kingdom for a string!'
s[/.ing/]                           # => "king"
s[/str.*/]                          # => "string!"

Related examples in the same category

1.Basic Special Characters and Symbols Within Regular Expressions
2.Regular Expression Character and Sub-Expression Modifiers
3.To replace the first two characters of a string with 'Hello':
4.To change the last two letters
5.scan is the iterator method you require:
6.scan(/../): . means Any character
7.scan (/\w\w/): \w means Any letter, digit, or underscore