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Date: Sun, 1 Dec 2019 23:46:07 +0000
From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: zsh-users@zsh.org
Subject: Re: shuffle array
Message-ID: <20191201234607.mrajutnpkfr5bmtq@tarpaulin.shahaf.local2>
References: <867e3jxtao.fsf@zoho.eu>
 <20191129064215.GA14095@prometheus.u-strasbg.fr>
 <8636e7w0w9.fsf__36104.0529723809$1575015640$gmane$org@zoho.eu>
 <20191201200719.anzbs27c7phgdnmm@chaz.gmail.com>
 <86v9qzpwq4.fsf@zoho.eu>
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User-Agent: NeoMutt/20170113 (1.7.2)

Emanuel Berg wrote on Sun, Dec 01, 2019 at 22:22:27 +0100:
> How do I send the array as a name/pointer argument, i.e. not just the value?

To read an array by name:

f() {
  local array_name=$1
  print -rl -- "${(@P)array_name}"
}
typeset -a foo=(bar baz)
f foo

To write an array by name:

f() { set -A "$1" bar baz }
typeset -a foo
f foo

> Or how can I return the new array and set the old one's value to that?

f() { reply=( bar baz ) }
typeset -a foo 
f
foo=( "${reply[@]}" )

> # from SC on gmane.comp.shells.zsh.user

gmane.comp.shells.zsh.user and zsh-users@zsh.org are the same thing. ☺