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RE: syntax: anonymous vs. named functions
From: |
Drew Adams |
Subject: |
RE: syntax: anonymous vs. named functions |
Date: |
Sun, 16 Nov 2008 00:01:01 -0800 |
> I have working code for my tab-completion problem (again thanks to
> everyone for answering my painfully stupid questions). i don't
> understand, though, why attempts to write my function as an unnamed
> lambda fails, but the same function succeeds when named. the "lambda"
> line commented out in tab-complete-from-function below
> returns an error
> "test-completion: Invalid function", while the uncommented call to a
> different, trivial function is successful. cna anyone advise me why?
> thanks much!
>
> (defun tab-complete-from-function (stub)
> "very simple tab completion function"
> (interactive (list (completing-read "Name: "
> ;; (lambda (string)
> (split-string (shell-command-to-string (concat
> "/home/matt/mutt-eds-query " string)) "\n" t))
> (do-completion (string))
> nil t)))
> (message stub))
>
>
> (defun do-completion (stub)
> "minimal function"
> (split-string (shell-command-to-string (concat
> "/home/matt/mutt-eds-query " stub)) "\n" t))
(do-completion string) is not a function. It is a function application, and its
value is a list of strings. The lambda form is a function.
To use a function as the `completing-read' COLLECTION argument, the function
must take the right (three) arguments and return the right values. See the doc
for a description of the kind of function that is needed.
- Re: starting an external command from emacs, (continued)
Re: starting an external command from emacs, Xah, 2008/11/13
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- Re: break a chunk of text into a list of lines, Andreas Politz, 2008/11/14
- interactive function: generate tab-completion list with another function, Matt Price, 2008/11/15
- syntax: anonymous vs. named functions, Matt Price, 2008/11/15
- RE: syntax: anonymous vs. named functions,
Drew Adams <=
- RE: syntax: anonymous vs. named functions, Matt Price, 2008/11/16
- RE: syntax: anonymous vs. named functions, Drew Adams, 2008/11/16
- Message not available
- Re: syntax: anonymous vs. named functions, Andreas Politz, 2008/11/17