Saturday 1 November 2014

Regular Expression : Character classes

Character class
Description
[abc]
a, b, or c (simple class)
[^abc]
Any character except a, b, or c (negation)
[a-zA-Z]
a through z or A through Z, inclusive (range)
[a-d[m-p]]
a through d, or m through p: [a-dm-p] (union)
[a-z&&[def]]
d, e, or f (intersection)
[a-z&&[^bc]]
a through z, except for b and c
[a-z&&[^m-p]]
a through z, and not m through p


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