haaglam.blogg.se - Java regex pattern matcher group example

This is best done in a block comment before the regular expression pattern is defined. Having a sample of the input that the regular expression is being applied to look at right on screen is a great help in deciphering what the pattern is trying to match.

give a plain English description of your goal.

Documenting regexes is the key to making them understandable so they can be debugged and modified either by someone else or by you after you've had time to forget the details. It's important to document any regular expression, or "regex" for short, that is more than a trivial match.

PLEAC Pattern Matching, PLEAC is Programming Language Examples Alike Cookbook and serves many programming languages.Here are some useful reference links that you may want to open up along side this page: 4.2 Conquer Complex Patterns by Dividing them into Simpler Categories.4.1 Test code fragments in the groov圜onsole.3.2 The eXtended Pattern Match Flag (x).2.3 Use extended patterns with comments.