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Re: The use of "$"


From: Aurélien Aptel
Subject: Re: The use of "$"
Date: Mon, 29 Sep 2014 00:40:48 +0200

On Sun, Sep 28, 2014 at 11:17 PM, Shiyuan <address@hidden> wrote:
> Hi all,
>     I try to understand some source code which use the symbol "$":
>
> (car (ein:$notebook-scratchsheets notebook))
>
> What does "$" do in the above lisp expression? Thanks.

Nothing particular. $ can be part of a valid symbol.

(let (($a$ 40))
  (+ $a$ 2))
=> 42



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