TypeScript for Beginners - Heterogeneous Arrays

The video tutorial explains the concept of homogeneous and heterogeneous arrays. It starts by discussing homogeneous arrays, which restrict data types to a single type, such as strings. The tutorial then introduces heterogeneous arrays, which can hold multiple data types by using the 'any' type. This flexibility allows arrays to store numbers, strings, JSON objects, and booleans without errors. The tutorial concludes with a practical demonstration of using heterogeneous arrays, showing how to log and view them in a web browser.

What happens if you try to assign a number to a string array?

• The number is automatically converted to a string.

• An error occurs because the array is homogeneous.

• The array changes its type to accommodate the number.

• The number is added to the array without issues.

What type should be used to create a heterogeneous array?

• Boolean

• Any

• Number

• String

Which of the following can a heterogeneous array store?

• Multiple data types

• Only JSON objects

• Only strings

• Only numbers

What is the purpose of using 'any' in an array type?

• To make the array immutable

• To allow the array to store any data type

• To restrict the array to a single data type

• To improve the performance of the array

What should you do after transpiling the code to view the heterogeneous array?

• Open the code in a text editor

• Compile the code again

• Refresh the web browser

• Run the code in a terminal