Does Dart support method or operator overloading?

In Dart, method overloading in the traditional sense (i.e., multiple methods with the same name but different parameters) is not supported. Instead, Dart supports named and optional positional parameters, which allow creating methods with different behaviors depending on the arguments passed.

As for operator overloading, Dart does support it. You can override operators in your classes to define custom behavior for operators like +, -, ==, and others.

Example of overloading the + operator:

class Vector {
  final int x, y;

  Vector(this.x, this.y);

  Vector operator +(Vector other) {
    return Vector(x + other.x, y + other.y);
  }
}

Thus, operator overloading in Dart is possible, and method overloading is implemented through default and named parameters.