From: dblack@...
Date: 2007-08-11T21:44:29+09:00
Subject: Re: Split a string based on change of character

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Hi --

On Sat, 11 Aug 2007, Pe=F1a, Botp wrote:

> From: Andrew Savige [mailto:ajsavige@yahoo.com.au]
> #   s =3D "ZBBBCZZ"
> #   x =3D s.scan(/((.)\2*)/).map {|i| i[0]}
>
> when it comes to string patterns like this, nothing beats regex
>
> #   import itertools
> #   s =3D "ZBBBCCZZ"
> #   x =3D [''.join(g) for k, g in itertools.groupby(s)]
> # Does anyone know if Ruby has a similar library to Python's itertools?
>
> hmm, you seem to like this than your previous regex+map solution, why? (i=
 ask because i prefer your first solution --not that it's ruby)
>
> in 1.9 or the upcoming ruby, it keeps getting better and better and may l=
ook like this,
>
> s =3D "ZBBBCZZ"
> x =3D s.split('').group_by{|x| x}.entries
>
> or possibly to
>
> x =3D s.split('').group_by.entries

I'm going to have to get special glasses that can read invisible
ink.... :-)


David

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