From: "Eric I." <rubytraining@...>
Date: 2008-06-02T00:59:31+09:00
Subject: Re: Remove Parts of a String

On Jun 1, 11:33 am, Dan __ <major_general_...@hotmail.com> wrote:
> Thanks very much Stefano :)  Thats exactly what I wanted, and it works
> great :)
> --
> Posted viahttp://www.ruby-forum.com/.

Hi Dan,

You're the expert in your the domain, and I obviously don't understand
the larger picture.  But the idea of getting access to the data after
the colons at a later stage using indexing into the original string
sounds unnecessarily complex.  So here's another approach.

If you run this, you'll see what you get at every step.

====

s = "12343:3,73820:1,183874:8"

# break it up into an array of arrays of strings
a = s.split(',').map { |v| v.split(':') }
p a

# now you can do lots of
things

# just want the numbers before the
colons?
b1 = a.map { |v| v.first }
p b1

# want them as integers rather than
strings?
b2 = a.map { |v| v.first.to_i }
p b2

# want it as a string w/ commas?  this seems to be part of your
original request
b3 = a.map { |v| v.first }.join(',')
p b3

# want to regenerate the original
string?
b4 = a.map { |v| v.join(':') }.join(',')
p b4

====

Maybe (or maybe not) that's helpful....

Eric

====

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