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Date: Wed, 06 Aug 2014 00:41:17 +0900 (JST)
Message-Id: <20140806.004117.57555736.ghostrevery@gmail.com>
To: vogt@linux.vnet.ibm.com
Cc: zsh-users@zsh.org
Subject: Re: copying an array
From: Yuya Amemiya <ghostrevery@gmail.com>
In-Reply-To: <20140805054434.GA4390@linux.vnet.ibm.com>
References: <20140805054434.GA4390@linux.vnet.ibm.com>
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Hi,

Try this:

eval $1'=("${G[@]}")'

If the value of $1 is foo, this is substituted with eval foo=("${G[@]}") and
evaluate it.

regards

From: Dominik Vogt <vogt@linux.vnet.ibm.com>
Subject: copying an array
Date: Tue, 5 Aug 2014 06:44:34 +0100

> I'm trying to write a function that
> 
>   * takes the name of a new array variable as its argument,
>   * creates a global array variable with the given name
>   * gets a copy of the values of another global array.
> 
> Sketch of the function:
> --
> typeset -g -a G
> G=("a b c" d e)
> copy_array () {
> 	typeset -g -a "$1"
> 	# how can this be done?
> 	$1="($G[@])"
> }
> --
> 
> The function needs to handle whitespace (or any special
> characters) in the values of G gracefully.  The closest I've got so
> far is
> 
>   eval $(echo "$1=($G[@])")
> 
> But this fails to handle whitespace properly.
> 
> Bonus points if this can be done without eval.  :-)
> 
> Any ideas?
> 
> Ciao
> 
> Dominik ^_^  ^_^
> 
>