I have an API upon which I mean to do Unit Testing via xUnit and Moq. It had one constructor actually, but I had to add another one for the specific purpose of Testing as per a suggestion by Visual…
I am trying to standardize the logic of a class.clone method so that every child of my abstract class clones the exact same way. I've tried using factory constructors and all sorts of roundabouts but I can't seem to find…
Consider the following TypeScript classes: class A { foo: string; constructor({ foo }: { foo: string }) { this.foo = foo; } equals(other: A) { return this.foo === other.foo; } } class B extends A { bar: number; constructor(b: {…
I have an instance sampleInstance of an unknown class and I need to create a second instance of the same class. Here's what I am doing right now: I look up the class name with sampleInstance.constructor.name. Next, I use eval(`new…
When creating a stateless widget, the constructor is const class MyWidget extends StatelessWidget { const MyWidget({super.key}); @override Widget build(BuildContext context) { return SingleChildScrollView( child: ListView( ), ); } } If I add a ScrollController(), then it is not a const…
I am using VS code when I create List without assigning values ...the compiler throw Error: Couldn't find constructor 'List': I tried to declare fixed length List but error occurs .please one can fix this I am beginner.
class MyClass { constructor(prop1, prop2, prop3, prop4) { this.prop1 = prop1 this.prop2 = prop2 this.prop3 = prop3 this.prop4 = prop4 //prop 50 and so on } } In js, for this type of constructor assigning where all I'm doing is…
I have the following JavaScript classes, where in the onClick method of the Lesson class the lessonObj property is NOT defined, though the init method of the Lesson class is correctly called. How do I have to change the code,…
What is difference when you use curly brackets inside constructor in dart classes and when you don't use it. And why you can not have not nullable and not initialized fields inside constructor when you use curly brackets, but you…
I'm working on some code which needs to be changed to be async (because of library upgrade). My code has same base class which is inherited by other classes and I want to call some functions in constructor which are…