From: Tim Hunter <rmagick@...>
Date: 2007-11-08T05:28:30+09:00
Subject: Re: how to delete array

Jeremy Woertink wrote:
> Surjit Nameirakpam wrote:
>> Problem
>> 
>> consider an array
>> 
>> a = [1,4,6,7,9,8]
>> 
>> I want to delete the array value w.r.t index
>> 
>> e.g i want to delte 0,4,6 element in one go
>> 
>> I can use the command
>> a.delete_at(0)
>> a.delete_at(4)
>> a.delete_at(6)
>> 
>> But the problem is that i dont know how much element will be populated
>> in my array every time the program runs and the index value will also
>> change.
>> 
>> So i need to dynamically pass the index value and this should delete the
>> values pertaining to the index
> 
> you could try something like...
> 
> a.each_with_index do |item, index|
>   a.delete_at(index) if item.eql?(something)
> end
> 
> 
> ~Jeremy

I think you want Array#delete_if.

a.delete_if {|v| v == 1}

deletes all entries in a that are 1.
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