Re: Use of lambda

[Daniel Speck <dspeck@xxxxxxxxxxxx>]

Chris Maden wrote:

> For instance:
>
> (define pages
>   (lambda ()
>     (string-append "...")))
>
> When I call this in the stylesheet:
>
> (string-append "..."
>                pages
>                "...")
>
> the function is processed.  Is it kosher to call a no-argument
> function without any parentheses, or is Jade being forgiving?

You aren't calling the function in the above (string-append "..." pages
"...") you are accessing the value of the variable pages which should be a
function of no arguments. You should be getting an error message when
(string-append ...) tries to append its string arguments to the procedure
that pages evaluates to. In order to call the function you need to wrap the
pages variable in parentheses, e.g., (pages). Perhaps you could post a
complete code fragment that demonstrates Jade's behavior when presented
with the above?

-dan

--
Daniel Speck                              e-mail: dspeck@xxxxxxxxxxxx
Research Engineer                          voice:     +1 301.548.7818
Thomson Technology Services Group            fax:     +1 301.527.4094
1375 Piccard Drive, Rockville, MD 20850      WWW:    www.thomtech.com

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