From: Dan Kelly <d_kelly18@...>
Date: 2008-01-17T19:07:27+09:00
Subject: Greedy and non greedy quantifiers

Im just after a bit of clarification with quantifiers in regular
expressions.
I just want to be sure of the differences between the quantifiers. so
for these various regular expressions,

[a-z]*   - this will match any amount lower case letters
[a-z]+   - this will match any amount lower case letters
           (whats difference between + and * in this case?)
[a-z]+?  -

or

\d*   - This will match any amount of digits
\d*?  - This will only match none or one number

Please can someone offer some clarification Im still unsure of myself
with these expresions as I'm new to ruby,
Thanks,
Dan
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