From: lostboard2001@...
Date: 2004-12-14T08:42:18+09:00
Subject: Re: Find every location of "th" in string.

oh, right, lookaheads:

mypatt=/ana/
"banana".scan(/(?=#{mypatt})/) {puts $`.length}

Glenn Parker wrote:
> Robert Klemme wrote:
> >>> "the thin man thinks".scan( /th/ ) { puts $`.length }
> > 0
> > 4
> > 13
> > => "the thin man thinks"
>
> scan doesn't really do that well.
>
> "banana".scan(/ana/) { puts $`.length }
> 1
> => "banana"
> 
> The second overlapping occurence of "ana" is missed.