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Regular expression pattern

Vivek Alampally
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Joined: Jul 10, 2008
Posts: 65
posted private message
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Hi

What does the regular expression
/(hot)? ?donuts/ mean?

How is it different from /(hot)? donuts/ ?

Thanks
Vivek.
Chris Baron
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Joined: Mar 21, 2003
Posts: 1015
posted private message
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The first one covers an optional blank " ?" between the optional "hot" and donuts.

This message was edited 1 time. Last update was at by Chris Baron
Vivek Alampally
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Joined: Jul 10, 2008
Posts: 65
posted private message
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Thanks Chris for your prompt reply. But i didnt get what you are trying to say. Can you please give me an example illustrating the difference between two regular expressions?
Chris Baron
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Joined: Mar 21, 2003
Posts: 1015
posted private message
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Hi Vivek,
i haven't testet it, but it looks like

/(hot)? ?donuts/ finds "hot donuts", "hotdonuts", " donuts" and "donuts",
/(hot)? donuts/ finds "hot donuts" and " donuts"

This message was edited 1 time. Last update was at by Chris Baron
Vivek Alampally
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Joined: Jul 10, 2008
Posts: 65
posted private message
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Ok I got it. Thank you so much.
 
 
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