great explanation! thank you so much! On Sat, Jan 21, 2012 at 6:03 AM, Vladimir Sedach <[email protected]> wrote: > Hi, > > It is indeed an omission in the reference manual - EVAL-WHEN is a > supported Parenscript form. I will add it to the manual soon. > EVAL-WHEN in Parenscript has the following meaning: > > The code in BODY is assumed to be Common Lisp code > in :compile-toplevel and :load-toplevel sitations, and Parenscript > code in :execute > > So for example, this is how the Parenscript macro IN-PACKAGE is defined: > > (defpsmacro in-package (package-designator) > `(eval-when (:compile-toplevel) > (in-package ,package-designator))) > > It just executes CL code - handy when you're writing .paren files that > only have Parenscript code. > > Vladimir > > On Thu, Jan 19, 2012 at 10:44 PM, Canhua <[email protected]> wrote: >> I am reading codes of paren-util. I find that it use "eval-when" >> inside defpsmacro. >> But I don't find that parenscript reference says eva-when is supported. >> As I understand, defpsmacro should expand into a valid parenscript code. Does >> parenscript support eval-when that although doesn't appear in reference. >> >> Thanks. >> >> _______________________________________________ >> parenscript-devel mailing list >> [email protected] >> http://lists.common-lisp.net/cgi-bin/mailman/listinfo/parenscript-devel > > _______________________________________________ > parenscript-devel mailing list > [email protected] > http://lists.common-lisp.net/cgi-bin/mailman/listinfo/parenscript-devel
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