Since Clojure now mandates Java8 as there been prior discussion around making functions implement the java.util.Function methods to make interop with Java APIs that make heavy use of it a bit more seamless?

If not, is it a discussion worth having 🙂

have been thinking about various approaches @pyr

there is some discussion in this room if you can find the archives

one approach is to make IFn implement some of those things in j.u.f (which ones? why?)

another approach is to enhance host interop calls to be smarter and auto-add interfaces

auto-add interfaces, you mean based on function arities?

do we want to have nice interop with all functional interfaces, including ones that don't live in java.util.function?

ThreadLocal.withInitial(() -> new Whatever());   // creates a Supplier

Thread.currentThread().setUncaughtExceptionHandler((thread, throwable) -> doSomething());  // a Thread$UncaughtExceptionHandler

Java creates lambdas contextually

and they don't have to be in java.util.function -- any interface with one abstract method will do

ok

"It's complicated"

indeed

right now, you can go pretty far with macros to make it nicer

thanks

feel free to vote for https://ask.clojure.org/index.php/767/integration-with-java-util-function-interfaces?show=767#q767

although it is already on the list for 1.11 consideration

there’s also https://github.com/ajoberstar/ike.cljj