I've been reading some articles on change detection, and all of them say that monomorphic functions are much faster than polymorphic. For example, here is a quote:     (..)The reason for that is, that it has to be written in a dynamic way, so   i...
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I am designing some class hierarchy in JavaScript. It works fine so far, but I can't see how to determine if an object is an "instance" of a parent class. Example:  function BaseObject(name){     this.name = name;      this.sayWhoAmI = fu...
I have read some possible article I could found on the internet on polymorphism. But I think I could not quite grasp the meaning of it and its importance. Most of the articles don't say why it is important and how I can achieve polymorphic behavi...
My client-side code gets a JSON 'object' from the server, and then parses it. The parsed object contains a 'type' property, which should control the class of the object.  $.getJSON("foo.json").done(function(data, textStatus, x...
I've been working with Church encoding recently and when I look at a typical type  newtype ChurchMaybe a =   ChurchMaybe { runChurchMaybe :: forall r . r -> (a -> r) -> r }   it looks as if functions with an existential type (runChurchMa...
I'm practicing polymorphism in JavaScript (first time trying) based on different examples I've found online. I know that in other languages I can access the variables of the super class from the extended one and am wondering how to do this co...
I'd like to implement multi-level inheritance supporting polymorphism implemented by extend method executed on object being extended (not by external utility or function - from the point of view of object being extended).   tl;dr jsfiddle here: h...
JavaScript uses a Prototype system, which is fundamentally different than a Class system. This is my first serious encounter with the language. I had fooled around with it previously, but this is the first time I built a system with proper OO, inheri...
abstract class Model {     abstract class View extends ModelView<this>;      getView(){         return new View();     } }  abtract class ModelView<M extends Model> {}     class Shape extends Model {     View = class {         constructor...

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