ObjectMap doesn't support functions as keys

[ofrzeta]

functions as keys are not possible with the ObjectMap implementation (in Neko?) because the getID() calls fail.

[sledorze]

Functions are not values; so this behavior is totally correct.

[ncannasse]

Ah, I think that the issue was actually fixed when we added the missing constraint {} on ObjectMap, I was surprised that it was allowed to create Map with functions as keys.

[Simn]

There is a FunctionMap implementation in tinkerbell if you really need it: https://github.com/back2dos/tinkerbell/blob/master/src/tink/collections/maps/FunctionMap.hx

[ofrzeta]

I don't see how that constraint works - at least when I am using a Dynamic type. When I compile the following the code, it get an exception

import haxe.ds.ObjectMap;

class Test {
    static function myfunc(param: Int) {
    }

    static function main() {
        var targetLibraries:ObjectMap <Dynamic, Int> = new ObjectMap<Dynamic, Int> ();
    targetLibraries.set (myfunc, 1);
        trace(targetLibraries);
    }
}

[ncannasse]

ObjectMap is only supposed to contain objects, and functions are not objects in Haxe. In your example this goes unoticed because you're using Dynamic, which is unsafe. Use {} (the empty object which works with all objects) and you'll see the error displayed.