Can you explain what a constructor-distributor is and how it works?

In Flutter, a redirecting constructor is a constructor that overrides or extends the behavior of a superclass constructor or another constructor within the same class.

Most often, this refers to named constructors or constructors with initializers, which allow creating class instances with different parameters or logic.

Example of a redirecting constructor using : to call the superclass constructor:

class Animal {
  String name;
  Animal(this.name);
}

class Dog extends Animal {
  int age;

  Dog(String name, this.age) : super(name); // redirecting constructor
}

Here, the Dog constructor calls the superclass constructor Animal via super(name), thereby overriding the object creation method.

In Dart, you can also create named constructors for different initialization methods:

class Point {
  double x, y;

  Point(this.x, this.y);

  Point.origin() : x = 0, y = 0; // named constructor
}

Thus, a redirecting constructor is a way to specify alternative or extended options for creating class objects.