Top "Constructor" questions

A special type of subroutine called at the creation of an object.

Initialize a static final field in the constructor

public class A { private static final int x; public A() { x = 5; } } final means the variable can only be assigned once (…

java static constructor final
How does interfaces with construct signatures work?

I am having some trouble working out how defining constructors in interfaces work. I might be totally misunderstanding something. But …

typescript constructor interface
Angular 2 Component Constructor Vs OnInit

If I want function x to happen every time a component loads, whether its the first time, I navigate to …

angular constructor ngoninit
Is it unnecessary to put super() in constructor?

Isn't this one automatically put by the compiler if I don't put it in a subclass's constructor? That means I …

java constructor super
implicit super constructor Person() is undefined. Must explicitly invoke another constructor?

I am working on a project and i am getting the error "implicit super constructor Person() is undefined. Must explicitly …

java class constructor superclass
Setup std::vector in class constructor

I'm designing a class that has a std::vector<int> as an instance variable. I'm using a std::…

c++ constructor new-operator stdvector
Instance attribute attribute_name defined outside __init__

I split up my class constructor by letting it call multiple functions, like this: class Wizard: def __init__(self, argv): …

python constructor pylint
Instantiate a class object with constructor that accepts a string parameter?

I would like to instantiate an object from its Class object, using the constructor that accepts a single String argument. …

java html reflection constructor
Why do constructors not return values?

Please tell me why the constructor does not return any value. I want a perfect technical reason to explain to …

constructor
How to initialize member-struct in initializer list of C++ class?

I have the following class definitions in c++: struct Foo { int x; char array[24]; short* y; }; class Bar { Bar(); int …

c++ list constructor struct initializer