From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-users-return-20868-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 26432 invoked by alias); 2 Nov 2015 00:01:29 -0000
Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Users List <zsh-users.zsh.org>
List-Post: <mailto:zsh-users@zsh.org>
List-Help: <mailto:zsh-users-help@zsh.org>
X-Seq: 20868
Received: (qmail 4020 invoked from network); 2 Nov 2015 00:01:28 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM,
	T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail;
	t=1446422151; bh=dx0DfoFI3dOFCPamJp01kUOlNZaUrGJ87DpojWI+xuM=;
	h=From:To:In-Reply-To:References:Subject:Date;
	b=mW1HVX5PjFLRmERSxFxvTcLzdH1fnfeFTA9IEU4Gl7e4uCSSMD3F0gF2XFt1HVOoW
	 Nj431zkl+YqidHPKMn2BBitCGqyk9rabeuOAF+sS5IUAjAH1XfCA8uBopyPSPPvDbg
	 goM6tzuZHbt2P7PbEldQaAzUV8Utzr06Kg5WaKT0=
From: ZyX <kp-pav@yandex.ru>
To: Ray Andrews <rayandrews@eastlink.ca>,
	Zsh Users <zsh-users@zsh.org>
In-Reply-To: <56369C7B.2030604@eastlink.ca>
References: <56369C7B.2030604@eastlink.ca>
Subject: Re: easy calling of associative array?
MIME-Version: 1.0
Message-Id: <1237641446422150@web6m.yandex.ru>
X-Mailer: Yamail [ http://yandex.ru ] 5.0
Date: Mon, 02 Nov 2015 02:55:50 +0300
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=koi8-r


02.11.2015, 02:44, "Ray Andrews" <rayandrews@eastlink.ca>:
> test ()
> {
> ššššševal "baz=\$${1}[key1]"
> šššššecho $baz
> eval "foo=\$${1}[key2]"
> šššššecho $foo
> ...
> }
>
> If I want to pass the name of an associative array to a function via
> "$1" and then work with it's keys, the above succeeds but it's sure
> laborious. Is there some way to do the eval just once? So that I can
> end up doing:
>
> if [ "xyz[key1]" = '1' ]; then ...
>
> ... as I experiment, there seems to be no way of replacing 'xyz' with
> any expression that will do the job without needing eval's help every
> time, but I'll bet there's a way.

There is ${(P)} for indirect referencing:

    % foo=path
    % echo ${${(P)foo}[1]} $path[1]
    /home/zyx/.local/bin /home/zyx/.local/bin

. This is in `man zshexpn`.