On May 24, 2015, at 3:20 AM, Michael Tiedtke michael.tied...@o2online.de
wrote:
I can of course use /version/ to check for Racket's version but this doesn't
take
patches or third party libraries/modules into account.
I was just re-reading this, and for your particular use case this has
Thank you very much! That was exactly what I needed.
(define (reset-flowers flowers)
[when (method-in-interface? 'snap-back-after-regions? card%)
;; See Animations in the README file and see also
;; mred/15064 in Racket's bug database. This is
;; conditional for
On May 27, 2015, at 6:13 AM, Michael Tiedtke michael.tied...@o2online.de
wrote:
I'm a little bit astonished that Racket doesn't offer a defined? primitve
when it's not
possible to implement it with macros because of the strange compile-time
behavior.
Here’s a fairly useless macro that
Just as a side comment, the more usual OO way (less 'hacky') to do that
kind of things is to define a specific interface that contains a set of
method declarations, and make the class implement this interface (or none
actually, in which case the interface is used only as a tag). Then you can
test
Il giorno 27/mag/2015, alle ore 13.08, Alexander D. Knauth ha scritto:
On May 27, 2015, at 6:13 AM, Michael Tiedtke michael.tied...@o2online.de
wrote:
I'm a little bit astonished that Racket doesn't offer a defined? primitve
when it's not
possible to implement it with macros because of
I'm used to check for the presence of a definition of a given symbol with
(defined? symbol)
Probably I still remember that from GNU Guile Scheme but I was not able
to find an equivalent in Racket.
I need something like that to check during runtime or at least at start-up
for the existence of a
This may be of interest to you:
http://stackoverflow.com/questions/20076868/how-to-know-whether-a-racket-variable-is-defined-or-not
For methods, you can use this instead:
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