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Re: newbie questions: why doesn't ((lambda (x) (x 2)) (lambda (n) (+ n 3
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From: |
Johan Bockgård |
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Subject: |
Re: newbie questions: why doesn't ((lambda (x) (x 2)) (lambda (n) (+ n 3))) work in elisp? |
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Date: |
Sat, 31 May 2008 10:58:13 +0200 |
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User-agent: |
Gnus/5.110009 (No Gnus v0.9) Emacs/23.0.60 (gnu/linux) |
Thien-Thi Nguyen <ttn@gnuvola.org> writes:
> ⎛⎞ Tahsin Alam <tahsin.alam@db.com>
> ⎝⎠ Fri, 30 May 2008 13:03:49 -0400
>
> As the subject says - why does the following expression give
> error when I try to evaluate it in the *scratch* buffer?
>
> ((lambda (x) (x 2)) (lambda (n) (+ n 3)))
>
> One reason is because Emacs Lisp is not Scheme (sigh).
> You can try this, instead:
>
> (funcall (lambda (x) (funcall x 2)) (lambda (n) (+ n 3)))
The first funcall is unnecessary.
--
Johan Bockgård