From: Florian Gilcher <flo@...>
Date: 2009-12-09T13:04:58+09:00
Subject: Re: which is better?


On Dec 8, 2009, at 11:40 PM, Ruby Newbee wrote:

> Hi,
>
> I want to delete the numbers in a string, for example,
>
> x="abcd1234"
>
> I have two ways:
>
> x.gsub! /\d+/,""
>
> x[/\d+/]=""
>
>
> Which one is better?
> I personally prefer the second one.


The first. It doesn't fail if the string contains no numbers:

x ="abcd"

x[/\d+/]=""
IndexError: regexp not matched
         from (irb):10:in `[]='
         from (irb):10
         from /usr/local/bin/irb19:12:in `<main>'

Regards,
Florian