From: Sebastian Hungerecker <sepp2k@...>
Date: 2008-01-11T21:28:43+09:00
Subject: Re: search pattern

Li Chen wrote:
> Stefano Crocco wrote:
> > String=~ returns the position of the starting of the match, so
> >
> > seq=~pattern
> >
> > will return what you want.
>
> The size if seq is 33. What I try to do is starting position of "AC" in
> the seq.
>
> How do I calculate the position of it?

For some reason I have the Jeopardy melody in my head now...
Anyway:

>> seq="AACGTGTAGGCTTGAAA"
=> "AACGTGTAGGCTTGAAA"
>> pattern = /TA/
=> TA
>> position = seq =~ pattern
=> 6
>> seq[position,2]
=> "TA"
>> seq[position..-1]
=> "TAGGCTTGAAA"
>> seq[pattern]
=> "TA"


HTH,
Sebastian
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