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Date: Wed, 16 Sep 2015 07:16:29 +0200
Message-ID: <CABZhJg9iLYO3Egj2gbVHKrRVXgusP-=tDPShs6g6ygk1qjYOyg@mail.gmail.com>
Subject: Re: Number of non-empty elements
From: =?UTF-8?Q?Jesper_Nyg=C3=A5rds?= <jesper.nygards@gmail.com>
To: Zsh Users <zsh-users@zsh.org>
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Thank you, Daniel. That works great.


On Tue, Sep 15, 2015 at 11:43 PM, Daniel Shahaf <d.s@daniel.shahaf.name>
wrote:

> Jesper Nyg=C3=A5rds wrote on Tue, Sep 15, 2015 at 19:15:01 +0200:
> > I have a fairly long function where the result is stored in an array
> called
> > "mylines".
> >
> > I want the function to return normally (status zero) if "mylines"
> contains
> > at least one non-empty element, and with non-zero otherwise.
>
>     return $(( $mylines[(I)?*] > 0 )0
>
> The (I) modifier interprets the key as a pattern and returns the highest
> index of a match, or 0 if there was no match.
>

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