From: Robert Dober <robert.dober@...>
Date: 2006-09-29T01:27:42+09:00
Subject: Re: Regular expression reformating a value

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On 9/28/06, Steven Ketcham <steve@encite.us> wrote:
>
>
>
> I am not really sure how to do this. I have a series of number that need
> parsed. Strip the zeros, if a caret
> exists replace it with a slash.
>
> 1.) 000123^2 - should be 123/2
> 2.) 1^2 - should be 1/2
> 3.) 0001 - should be 1
> 4.) 000123 - should be 123


How about
      s.sub!(/^\s*0+/,"").sub(/\^/,"/")
than
if you need checking
    %r{^\s*[0-9/]+} =3D=3D=3D s
which is not completely strict because of
5.)   12^34/5

Cheers
Robert


> I do not know how to do the condtional to exclude the slash on examples 3
> and 4. How do I prevent the addition of the slash when there is no caret
> in
> the number?
>
>
>
>
>
> reg =3D /(?:[1-9]{1}\d*)\W(?:\d*)/
>
> puts  reg.match("000123^2");
>
> puts  reg.match("123^2");
>
> puts  reg.match("0001");
>
> puts  reg.match("000123");
>
> puts  reg.match("123");
>
>
>
> Thanks!
>
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--=20
Deux choses sont infinies : l'univers et la b=EAtise humaine ; en ce qui
concerne l'univers, je n'en ai pas acquis la certitude absolue.

- Albert Einstein

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