Primitives are a different kind of type than objects created from within Javascript. From the Mozilla API docs: var color1 = new String(“green”); color1 instanceof String; // returns true var color2 = “coral”; color2 instanceof String; // returns false (color2 is not a String object) I can’t find any way to construct primitive types with … Read more
Basically, you check if an object is an instance of a specific class. You normally use it, when you have a reference or parameter to an object that is of a super class or interface type and need to know whether the actual object has some other type (normally more concrete). Example: public void doSomething(Number … Read more
Have you tried the __name__ attribute of the class? ie type(x).__name__ will give you the name of the class, which I think is what you want. >>> import itertools >>> x = itertools.count(0) >>> type(x).__name__ ‘count’ If you’re still using Python 2, note that the above method works with new-style classes only (in Python 3+ … Read more
instanceof keyword is a binary operator used to test if an object (instance) is a subtype of a given Type. Imagine: interface Domestic {} class Animal {} class Dog extends Animal implements Domestic {} class Cat extends Animal implements Domestic {} Imagine a dog object, created with Object dog = new Dog(), then: dog instanceof … Read more
Okay, let’s play a little mind game: From the above image we can see: When we create a function like function Foo() {}, JavaScript creates a Function instance. Every Function instance (the constructor function) has a property prototype which is a pointer. The prototype property of the constructor function points to its prototype object. The … Read more