From: Mikael Magnusson <mikachu@gmail.com>
To: Zsh Users <zsh-users@zsh.org>
Subject: Re: Repeat argument N times?
Date: Thu, 31 Jul 2014 17:59:26 +0200 [thread overview]
Message-ID: <CAHYJk3QdPyjGQS0CUUkq0h8dYU5gQgPxXcsVMRRo2v-=BsSVfg@mail.gmail.com> (raw)
In-Reply-To: <140729234830.ZM20800@torch.brasslantern.com>
On 30 July 2014 08:48, Bart Schaefer <schaefer@brasslantern.com> wrote:
> On Jul 29, 11:12pm, Benjamin R. Haskell wrote:
> }
> } Is there a built-in way to repeat an argument N times?
>
> Not really. You have to admit it's a rather unusual thing to do. It
> can be done by abusing other expansions, as you've discovered.
>
> } It'd be nice if I could write (something like):
> }
> } upload-files file1(N3) file2(N10) file3(N4)
>
> You can create an array of N empty elements just by assigning to the
> Nth position:
>
> N[100]=()
>
> And then:
>
> upload-files file1$^N[1,3] file2$^N[1,10] file3$^N[1,4]
>
> Works up to however much memory you're willing to waste on allocating
> empty array slots.
>
> There are other ways, e.g.
>
> upload-files file2${^${:-{1..10}}/*/}
>
> upload-files file2(e{'repeat 10 reply+=($REPLY)'})
>
> though the latter requires "file2" to actually exist, which sometimes
> might be a good thing.
Here's another minor variation on the first one,
upload-files file1${(s: :)^${(l:50:)}}
--
Mikael Magnusson
prev parent reply other threads:[~2014-07-31 15:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-30 3:12 Benjamin R. Haskell
2014-07-30 6:48 ` Bart Schaefer
2014-07-30 8:56 ` Peter Stephenson
2014-07-30 14:10 ` Roman Neuhauser
2014-07-30 14:41 ` Roman Neuhauser
2014-07-31 15:59 ` Mikael Magnusson [this message]
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