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Re: Anonymous array indexing

X-seq: zsh-users 3561
From: Dan Nelson <dnelson@xxxxxxxxxxxx>
To: Steve Talley <stephen.talley@xxxxxxx>
Subject: Re: Anonymous array indexing
Date: Tue, 12 Dec 2000 22:04:37 -0600
Cc: zsh-users@xxxxxxxxxxxxxx
In-reply-to: <20001212184156.I11810@rmtc>; from "Steve Talley" on Tue Dec 12 18:41:56 GMT 2000
Mailing-list: contact zsh-users-help@xxxxxxxxxxxxxx; run by ezmlm
References: <20001212184156.I11810@rmtc>

In the last episode (Dec 12), Steve Talley said:
> Is there a compact version of the following:
> 
>     fred=(one two three)
>     export FRED=$fred[2]
>     unset fred
> 
> I am looking for something like
> 
>     export FRED=(one two three)[2]

Assuming "one two three" is actually stored in a shell variable (we'll
call it a):

export FRED=${${=a}[2]}

will work. = turns on SH_WORD_SPLIT, essentially turning the variable
into an array temporarily.


-- 
	Dan Nelson
	dnelson@xxxxxxxxxxxx

References:
- Anonymous array indexing
  - From: Steve Talley

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