From: chris williams <chrisw_88@...>
Date: 2010-07-13T06:06:02+09:00
Subject: Re: regex to match similar strings

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Here are a couple ruby libraries that may help you out.  I found this a whi=
le back on a ruby sitewhen I was looking to compare strings for duplicates =
when cleansing data.
The first is distance between strings. (I prefer this one)
The second is the traditional soundex  Remove vowels take the first letter =
run a calc on the rest.Its not very reliable but may help.
The third is like soundex but larger strings.
http://raa.ruby-lang.org/project/levenshtein/=20
http://raa.ruby-lang.org/project/soundex/=20
http://raa.ruby-lang.org/project/metaphone/=20
Here is the link to the original post:http://groups.google.com/group/comp.l=
ang.ruby/browse_thread/thread/1276ccf14b3d6ca6/3750d67dc7b2f496?lnk=3Dgst&q=
=3Ddouble+metaphone&pli=3D1

> Date: Tue=2C 13 Jul 2010 05:56:00 +0900
> From: johnnybutler7@gmail.com
> Subject: regex to match similar strings
> To: ruby-talk@ruby-lang.org
>=20
> Hi=2C
>=20
> Im writing some validation code the basically make sure a users login is
> not too similar to their password.  I was thinking a regular expression
> to match similarities and if they are alike then make the user change
> their password.
>=20
> This doesnt have to be bullet proof just enough to really say if
> someones username is bobbysmith then their password cant be bobbysmith7
> or bobbysmi7
>=20
> Anyone got a solution=2C is it possible to do this with a regular
> expression or will it be some ruby code ina  loop....
>=20
> JB
> --=20
> Posted via http://www.ruby-forum.com/.
>=20
 		 	   		 =20
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