What is the difference between function and class declarations?

Vaibhav Kothia May 30, 2023 0 Comments

Function declarations are used to declare functions, which are blocks of code that can be called and reused multiple times. A function declaration consists of the function keyword, a name for the function, a list of parameters (which can be empty), and a body of code that will be executed when the function is called.

For example:

function addNumbers(a, b) {
return a + b;
}

Class declarations are used to declare classes, which are templates for creating objects. A class declaration consists of the class keyword, a name for the class, and a body of code that defines the properties and methods of the class.

For example:

class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
sayHello() {
console.log(`Hello, my name is ${this.name}`);
}
}

What is the difference between a class and a module?

Vaibhav Kothia May 26, 2023 0 Comments

A class is a blueprint for creating objects, while a module is a collection of methods and constants that can be used by other classes.

For example, a class might be used to create objects that represent a car, such as a Ford Mustang. The class would define the attributes of the car, such as the make, model, and color.

A module, on the other hand, might contain methods for calculating fuel efficiency or calculating the cost of repairs. These methods could be used by any class, not just the car class.

What is the purpose of the init method?

Vaibhav Kothia May 26, 2023 0 Comments

The init method is a special method in Python classes that is automatically called when an object of that class is created. It is used to initialize the attributes of the object.

Example:

class Person:
def __init__(self, name, age):
self.name = name
self.age = age

p1 = Person(“John”, 20)

print(p1.name)
print(p1.age)

# Output
John
20

What is the difference between a class and an object?

Vaibhav Kothia May 26, 2023 0 Comments

Class: A class is a blueprint for creating objects. It is a template that describes the properties and behaviors of a type of object.

For example, a class called “Car” could describe the properties of a car, such as its color, make, model, and year. It could also describe the behaviors of a car, such as accelerating, braking, and turning.

Object: An object is an instance of a class. It is a concrete example of the class, with its own set of data and behaviors.

For example, a car object could be a specific car, such as a red Honda Accord from 2019. This object would have its own color, make, model, and year, and it would be able to accelerate, brake, and turn.