Re: let unset array element remove compatible with bash

[Peter Stephenson <Peter.Stephenson@csr.com>]

On Tue, 21 Feb 2012 21:01:06 -0800
Bart Schaefer <schaefer@brasslantern.com> wrote:
> On Feb 22,  3:28am, Daniel Lin wrote:
> }
> } Can any developer consider to enhance zsh's function like "unset var[2]"?
> 
> Hmm, what's the reason NOT to do this?  I can think of one: "unset var[9]"
> might cause elements 2 through 8 to spring into existence, which is surely
> counter-intuitive ... but of course the same thing happens with var[9]=().

It should work, but it's not quite trivial:

$ array=(one three)
$ echo ${#array[*]}
2
$ unset 'array[8]'
$ echo ${#array[*]}
2

So it's not simply a case of unconditionally deleting an element.  I
think you need to check the element is present in the first place.

-- 
Peter Stephenson <pws@csr.com>            Software Engineer
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