Regular expressions, or regex, are one of the best things about Perl. So good infact, that they been copied by most other programming languages.
They are sadly let down however by Perl "man pages" and the chapter in the 'Programming Perl' camel book which in no way does them justice. It explains them, but only in a way a Computer Science PHD student would understand.
So, here's my tutorial with lots of examples.
NB 1: this is based on Perl, but you can use them in Javascript, Python etc.
NB 2: once you understand this, you should be ready for the reference material
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Cablechip Solutions
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2008
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September
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- Regex : Tutorial
- Regex : Using a regular expression (perl specific).
- Regex : Using whitepace and comments
- Regex : Some simple examples
- Regex : How many times to match?
- Regex : Predefined Groups of characters
- Regex : Groups
- Perl Complex Variables
- Regex : Doesn't match
- Regex : Match on word Boundary
- Regex : . and the /s modifier
- Regex : Anchors and the /m modifier
- Regex : Global Replace
- Regex : Using expressions
- Regex : Substitutions
- Regex : Capture Matched text
- Regex: Ranges
- Perl Poetry
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September
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