From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh list <zsh-workers@zsh.org>
Subject: Re: anonymous functions
Date: Fri, 11 Feb 2011 10:17:29 -0800 [thread overview]
Message-ID: <110211101729.ZM525@torch.brasslantern.com> (raw)
In-Reply-To: <m3zkq2bidh.fsf_-_@klanderman.net>
On Feb 11, 12:17pm, Greg Klanderman wrote:
} Subject: anonymous functions
}
} >>>>> On February 11, 2011 Bart Schaefer <schaefer@brasslantern.com> wrote:
}
} > If your zsh is recent enough to have anonymous functions
}
} Why are these things called 'anonymous functions'? That name connotes
} lambda, which would create an unnamed function you could store in a
} variable
Unfortunately it really only means an unnamed function for scoping, so
you can use "local" and "return" to save/restore variables and set the
status. It does not connote a closure (is not like a lambda expression).
This is partly for simplicity of the implementation, but partly because
the shell language doesn't really provide a syntax for returning values
from functions or commands (except in the limited context of $(( ... ))
math expressions) -- hence all the hacks with $REPLY.
See zsh-users/15575 from last November:
http://www.zsh.org/mla/users/2010/msg00874.html
next prev parent reply other threads:[~2011-02-11 18:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTikFsJGitoiU49kJphErOsxbCN_BrerNcaHcb2kR@mail.gmail.com>
[not found] ` <AANLkTinerHxXBs4vc_+UXFMxsrui7EKBNhdH01a0wqn6@mail.gmail.com>
2011-02-11 17:17 ` Greg Klanderman
2011-02-11 18:17 ` Bart Schaefer [this message]
2011-02-11 18:21 ` Bart Schaefer
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