Again, this is something that is simple to learn and understand. And you would learn this in a beginner tutorial. Why go through trouble to change it and complicate the language even further? I undeerstand weakmap may have some real advantage as far as GC, at least.
Again, this is something that is simple to learn and understand. And you would learn this in a beginner tutorial. Why go through trouble to change it and complicate the language even further?
For one simple to understand != intuitive or easy to use. Chess rules are easy to understand too, you can learn all of them in an hour, but try to play the game with any quality. So this being simple to understand does not mean its simple to code around and debug.
You are also misguided in that this addition "complicates the language". It's not like adding generics or monads or some crazy new feature. It's one of the most fundamental datatypes, implemented properly for the first time.
So, instead of saying Object foo; foo.x = "a"; when you need a dict, and having to guard against all consequences, you get to use Map foo; foo.x = "a"; and there is nothing you have to think about anymore.
