From: "David A. Black" <dblack@...>
Date: 2008-04-30T23:29:15+09:00
Subject: Re: Search string for occurneces of words stored in array

Hi --

On Wed, 30 Apr 2008, Jens Wille wrote:

> ok, i withdraw my post. david's just quicker... ;-)

Yeah, but yours is cooler because you remembered Regexp.union :-)

> Jens Wille [2008-04-30 16:18]:
>> sentence =~ Regexp.union(*words)
> one addition regarding the regexp, though. in case words may contain
> special characters, it's safer to escape them first:
>
>  sentence =~ Regexp.union(*words.map { |word| Regexp.escape(word) })

It actually does it for you:

Regexp.union("a",".b")
=> /a|\.b/


David

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