From: Robert Klemme <shortcutter@...>
Date: 2007-11-08T16:15:05+09:00
Subject: Re: how to delete array

On 07.11.2007 21:02, 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

I am surprised nobody mentioned slice - just apply indexes in decreasing 
order:

irb(main):012:0> a = [1,4,6,7,9,8]
=> [1, 4, 6, 7, 9, 8]
irb(main):013:0> a.slice! 2,1
=> [6]
irb(main):014:0> a
=> [1, 4, 7, 9, 8]
irb(main):015:0> a.slice! 1,1
=> [4]
irb(main):016:0> a
=> [1, 7, 9, 8]

Kind regards

	robert