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kotlinlang

does this work with statically typed languages? I know Scala has something like `Dynamic` but this is not what you mean probably

Hum, we have a dynamic thing in kotlin, but only for js, I think. What I would like to do is to create an api controller that could call any implemented method on a business object of mine. Since I have a lot of possible methods it would be very nice to have a dynamic way to do that.

&gt; The dynamic type is not supported in code targeting the JVM

<https://kotlinlang.org/docs/reference/dynamic-type.html>

in Scala land, if your instance would be of type `Dynamic` then you could call an “unknown” method I believe (the compiler does the magic). But if you use any other type, it would give you compile errors. I haven’t seen the same thing in Kotlin but maybe it exists. I haven’t used Kotlin that long

Hum, so, if this is possible in Scala it could be possible in Kotlin too.

I don't know of any JVM hooks that would let you intercept on the receiver object after failed method resolution.
<https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-5.html#jvms-5.4.3.3>

Well, as far as I know accesses to the `Dynamic` type in Scala compile to calls of the reflection API.

And there are ways to hook into the method resolution strategy on newer JVMs: <https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/invoke/package-summary.html>

That's cool, haven't played with Scala - would make sense. You'd absolutely have the opportunity to inspect whether it existed and handle it in that case.

&gt;&gt;&gt; Scala’s Dynamic type allows you to access instance members that aren’t statically defined in a class. It’s a marker trait with no members - it provides a hint to the compiler to rewrite method calls and field accesses to missing members

&gt; dyn.foo                     //dyn.selectDynamic(“foo”)

so it’s not using reflection but different method calls