From: Maurice Szmurlo <maurice@...>
Date: 2000-12-21T03:31:23+09:00
Subject: [ruby-talk:7783] Re: Regex array subscripts


meaning
/\d/ -> one digit
/\d+/ -> more than one digit


indexes of caracters in a string
           1
 01234567890
"one 123 two"


> /\d/ =~ s     -> what is the position of a digit (the first one)
> /\d+/ =~ s    -> --- " ---               more than one digit
> s[/\d/]       -> caracter in s corresponding to the position of the first digit
> s[/\d+/]      -> caracters (the larger possible string) correspondint ... etc

maurice

craig duncan wrote:
> 
> Can someone explain why this is the case:
> 
> s="one 123 two"   =>  "one 123 two"
> /\d/ =~ s         =>  4
> /\d+/ =~ s        =>  4
> s[/\d/]           => "1"
> s[/\d+/]          => "123"
> 
> I like it, but i can't find any explanation of what /<regex>/ returns
> that would explain it.