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Clojure has to do the same thing to interface with Java: https://clojure.github.io/clojure/javadoc/clojure/lang/IFn.h...

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I don't know that it "has to", as the last overload has variadic arguments. (Caution, I'm not a Java expert).

This is likely for JIT performance, with virtual method lookup. C# does the same thing with string.Format - https://docs.microsoft.com/en-us/dotnet/api/system.string.fo...

Are you looking at the "applyTo" method? I'm not seeing a variadic overload of "invoke", but I'm also not a Java or JVM person. I'm wondering if I'm overlooking something.

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