From: matz@... (Yukihiro Matsumoto)
Date: 2003-04-24T17:30:28+09:00
Subject: Re: grep and regular expressions in ruby

Hi,

In message "grep and regular expressions in ruby"
    on 03/04/24, "Krishna Dole" <kpd@krishnadole.com> writes:

|I'm quite taken with ruby, but recently I ran into trouble using grep. I
|have two questions: first, is there a way to call grep with multiple
|regexps? For example, if you had
|	ar = ["cat", "dog", "smallcat"]
|
|and you only wanted strings matching  both "small" and "cat", in perl I
|think you could do something like
|	ar2 = grep(( /cat/ and /small/ ), ar );
|
|but in ruby it seems like you have to call grep twice
|	ar2 = ar.grep(/cat/).grep(/small/)
|
|is there a more elegant solution?

  ar2 = ar.select{|x| /cat/ =~ x and /small/ =~ x}

							matz.