From: Joel VanderWerf <vjoel@...>
Date: 2009-06-05T05:14:27+09:00
Subject: Re: Regular expressions: Find part of a string

Jermaine wrote:
> Hello Everyone,
> 
> I'm quite new to regular expressions, and I'm looking for a way to
> find the first 3 letters in a string.
> 
> So let's say I have the following string: "foobar", I want to know
> what the first three letters of this string is (in this case it's
> foo).
> 
> What is the regex to make this happen?
> 
> Thanks in advance.

p "foobar"[/.../]
  # simplest

p "foobar"[/\A.../]
  # \A anchors to beginning of string, which is
  # same as above for this regex

p "foobar"[/.{3,3}/]
   # accepts between 3 and 3 chars


-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407