TypeScript for Beginners - Private Properties

The video tutorial explores the concept of encapsulation using the private keyword in programming. It emphasizes the importance of hiding data from outside access and introduces the use of underscores for naming private fields. The tutorial explains how to access private fields within a class using accessor methods, specifically the get and set methods. It highlights the conventions and best practices for naming these methods, ensuring that private fields are accessed and modified correctly. The tutorial also covers the importance of not having a return type for set methods and the common naming conventions in JavaScript and TypeScript.

What is the purpose of using the private keyword in a class?

• To allow fields to be modified directly

• To improve the performance of the program

• To hide data from being accessed outside the class

• To make fields accessible from anywhere in the program

Why is it a good practice to use an underscore at the start of a private field's name?

• To indicate that the field is public

• To make the field name shorter

• To signal to other programmers that it is a private field

• To ensure the field is always initialized

What is the role of the get keyword in accessor methods?

• To delete a private field

• To modify the value of a private field

• To create a new private field

• To retrieve the value of a private field

What should be avoided when defining a set method?

• Returning a value

• Accepting parameters

• Modifying private fields

• Using the set keyword

What is a common naming convention for get and set methods in JavaScript and TypeScript?

• Using numbers as method names

• Using random names for each method

• Using the same name as the private field

• Using different names for get and set methods