Sorry to awaken this old thread. It seems like reifying a valid lambda, for
the specific clojure function which you want to pass to Java code, is
indeed the most sensible way, given all the surface that java's lambda api
entails. To the best of my knowledge no generic interop features or
librar
My use case isn't a particularly great one at that minute. It mainly just
seemed like an unfortunate extra step to interacting with Java APIs.
Essentially, I was trying to leverage APIs that return a Java Stream, but
wanted to interact with them with Clojure goodness, like
map/reduce/transduce. I
>
> Which seems unlikely given the conservatism of Clojure development.
More than that, it would mean that Clojure required Java 8.
On 28 July 2015 at 05:23, Mikera wrote:
> Ah, I get what you are doing now.
>
> Don't think that is likely to work unless Clojure starts making IFn
> instances im
Ah, I get what you are doing now.
Don't think that is likely to work unless Clojure starts making IFn
instances implement the right java.util.function.* interfaces. Which seems
unlikely given the conservatism of Clojure development. Having said that, I
do think it is possible, have been playing
I think Mike was suggesting something like this:
(-> (IntStream/range 0 100) (.filter ^Predicate odd?) (.limit 5) (.collect
Collectors/toList))
and having the Clojure compiler figure out that you’re trying to cast an IFn to
a functional interface and therefore "do the magic" for you. I don’t kn
Mikera, I think you're addressing a different interop concern. I'm
particularly interested in something like this:
(-> (IntStream/range 0 100) (.filter odd?) (.limit 5) (.collect
Collectors/toList))
Where "odd?" is a normal Clojure IFn that I want to use when calling a Java
API that expects somet
It could certainly be achieved in the Clojure compiler, by allowing
(some-functional-interface .) to compile to the appropriate function
call even if it doesn't implement IFn
It would be quite a big change though and would probably have some
limitations, e.g.:
a) It probably wouldn't work w
Thanks for the reply Gary. Sounds like I'm on as good a track as I can be
with current Clojure.
I am curious though why you say that it is unrealistic for IFn to support
arbitrary @FunctionalInterface. It certainly seems like it would require
compiler changes, but I would think that either through
On Sunday, 26 July 2015, Andrew Oberstar wrote:
> Hi,
>
> I'm wondering if anyone has a good approach for making calls from Clojure
> to Java APIs (e.g. Stream API) that expect a @FunctionalInterface type.
>
> Ideally, IFn would transparently work, but I'm guessing that requires some
> compiler c
Hi,
I'm wondering if anyone has a good approach for making calls from Clojure
to Java APIs (e.g. Stream API) that expect a @FunctionalInterface type.
Ideally, IFn would transparently work, but I'm guessing that requires some
compiler changes.
Right now, the best I can think of is a function or m
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