What main programming direction is widely recognized and used in the modern world?

One of the main and widely used directions in modern programming is object-oriented programming (OOP). It is based on the concepts of classes and objects, encapsulation, inheritance, and polymorphism.

OOP helps structure code, making it more understandable, reusable, and maintainable. In Flutter, for example, although the Dart language supports a functional style, OOP is used for creating widgets and managing state.

Example of a class in Dart:

class Person {
  String name;
  int age;

  Person(this.name, this.age);

  void sayHello() {
    print('Hello, my name is $name and I am $age years old');
  }
}

void main() {
  var person = Person('Ivan', 30);
  person.sayHello();
}