If I recall you are allowed to splice in references to Java objects so this
works out in Clojure.
On Sunday, February 23, 2014, Karsten Schmidt <i...@toxi.co.uk> wrote:
> Oh man, I really do have to spend some more quality time with
> macroexpand-1 to fully grok those "~'~" forms, and - thank you - that
> change does work indeed! But then why does my original version work in
> Clojure? A change in quoting usually only causes havok/failure, but
> here it doesn't seem to...
>
> Thanks again! K.
>
>
> On 23 February 2014 22:15, David Nolen <dnolen.li...@gmail.com> wrote:
> > I think your unquoting needs tweaking?
> >
> > (defmacro defmathop
> > "Constructs a macro to build inlined nested expressions with f applied
> > to inner pairs and f2 to combine results."
> > [name f f2]
> > `(defmacro ~name
> > ([a# b# c#] `(~'~f2 (~'~f ~a# ~b#) ~c#))
> > ([a# b# c# d#] `(~'~f2 (~'~f ~a# ~b#) (~'~f ~c# ~d#)))))
> >
> > On Sunday, February 23, 2014, Karsten Schmidt <i...@toxi.co.uk> wrote:
> >>
> >> Thanks, David! I tried that already and it didn't work:
> >>
> >> clojure.lang.Compiler$CompilerException:
> >> java.lang.ClassNotFoundException: cljs.core,
> >> compiling:(macromath/macros.clj:58:1)
> >>
> >> I also tried to require cljs.core in that macro's namespace, but then
> >> it complains this way:
> >>
> >> clojure.lang.Compiler$CompilerException: java.lang.RuntimeException:
> >> Can't take value of a macro: #'cljs.core/+,
> >> compiling:(macromath/macros.clj:59:1)
> >>
> >> Hmmm....
> >>
> >> On 23 February 2014 19:52, David Nolen <dnolen.li...@gmail.com> wrote:
> >> > You shouldn't use js*, and in this case it can be avoided. The problem
> >> > you're encountering is a long outstanding wart that ClojureScript
> macros
> >> > resolve symbols in Clojure not ClojureScript. Instead of + (which is
> >> > actually clojure.core/+) you want to specify cljs.core/+:
> >> >
> >> > (defmathop cljs.core/+ cljs.core/+)
> >> >
> >> >
> >> > On Sun, Feb 23, 2014 at 2:47 PM, Karsten Schmidt <i...@toxi.co.uk>
> >> > wrote:
> >> >>
> >> >> After taking another look through cljs.core I managed to reformulate
> >> >> my macro using js* templates, but am still wondering why the "normal"
> >> >> (and cross-platform) solution doesn't work and also if using the js*
> >> >> way is actually safe in the future (i.e. not just a current
> >> >> implementation detail)?
> >> >>
> >> >> (defmacro defmathop
> >> >> "Constructs macro to build inlined nested expressions with f
> applied
> >> >> to inner pairs and f2 to combine results."
> >> >> [name f f2]
> >> >> `(defmacro ~name
> >> >> ([a# b# c#]
> >> >> (list '~'js* (str "((~{} " ~f " ~{}) " ~f2 " ~{})")
> >> >> a# b# c#))
> >> >> ([a# b# c# d#]
> >> >> (list '~'js* (str "((~{} " ~f " ~{}) " ~f2 " (~{} " ~f "
> >> >> ~{}))")
> >> >> a# b# c# d#))))
> >> >>
> >> >> (defmathop madd "*" "+")
> >> >>
> >> >> Thanks for any answers!
> >> >>
> >> >> On 23 February 2014 16:28, Karsten Schmidt <i...@toxi.co.uk> wrote:
> >> >> > Btw. My cljs example above is slightly wrong due to my simplifying
> >> >> > the
> >> >> > email
> >> >> > example. I originally used this ns declaration
> >> >> >
> >> >> > (ns macromath.test
> >> >> > (:require-macros [macromath.core :as m]))
> >> >> >
> >> >> > ...and then of course referred to (m/madd ...)
> >> >> >
> >> >> > But the issue remains regardless...
> >> >> >
> >> >> > On 23 Feb 2014 15:59, "Karsten Schmidt" <i...@toxi.co.uk> wrote:
> >> >> >>
> >> >> >> Hi, I've written a macro to build inline expanded math expressions
> >> >> >> and
> >> >> --
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> --
> Karsten Schmidt
> http://postspectacular.com | http://toxiclibs.org | http://toxi.co.uk
>
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