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From: ZyX <kp-pav@yandex.ru>
To: Mikael Magnusson <mikachu@gmail.com>,
	Dmitri Vereshchagin <dmitri.vereshchagin@gmail.com>
Cc: Zsh Users <zsh-users@zsh.org>
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References: <20150926101839.GA14021@gmail.com> <CAHYJk3QegiGeqwiw834TVW+tFzvW5+HKV0cvopDyxOJnrZ6LYQ@mail.gmail.com>
Subject: Re: question about parameter expansion
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Date: Sat, 26 Sep 2015 20:41:20 +0300
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26.09.2015, 16:38, "Mikael Magnusson" <mikachu@gmail.com>:
> On Sat, Sep 26, 2015 at 12:18 PM, Dmitri Vereshchagin
> <dmitri.vereshchagin@gmail.com> wrote:
>> šHello.
>>
>> šHere is a code sample I would like to rewrite using parameter expansion
>>
>> šššif (( ${+foo} )); then
>> šššššbar=
>> šššelse
>> šššššbar=baz
>> šššfi
>>
>> šCannot find it in the docs, but I suppose there is a way to do that. Am
>> šI right?
>>
>> šThanks.
>>
>> š--
>> šDmitri Vereshchagin
>
> You have to think outside the box for this one,
> bar=${${${+foo}#1}//0/baz}

Why not simply

    bar=${foo+baz}

?

>
> --
> Mikael Magnusson