From: Clayton Lane <ds_unsane@...>
Date: 2009-04-27T10:22:06+09:00
Subject: Re: Deleting numbers in array

David A. Black wrote:
> Hi --
> 
> Clayton Lane wrote:
>> I'm new to Ruby and unsure how to delete numbers in an array. I have an
>> array filled with numbers from 1 to 100. If I use nums.delete_if {|x| x
>> == 9 }, it will delete 9, but I want to remove any number containing 9.
>> For example, 19, 39, 92, 99 etc. I tried using a wildcard, but it didn't
>> work. I'm sure theres an easy command to do it, but I wasn't able to
>> find it on in Ruby documentation. I also want to remove numbers
>> containing 0,6,7, and 8 as well. Any help would be greatly appreciated.
> 
> You're pretty much going to have to convert the numbers to strings. For
> example:
> 
>    array.delete_if {|x| x.to_s[/[06789]/] }
> 
> 
> David

Wow! Ruby is so good! I'm unsure of how to do this final step too. If 
any numbers don't contain 1, remove them. Any ideas?
-- 
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