What are the differences between TypeScript enums and constants?

What are the differences between TypeScript enums and constants?

TypeScript enums are a way to define a set of named constants, while constants are simply variables that cannot be reassigned. Enums can be numeric or string-based, providing a more descriptive way to handle sets of related values.

Can you give me an example of how to use enums in TypeScript?

Sure! Here's a simple example:

enum Direction {
    Up,
    Down,
    Left,
    Right
}

let move: Direction = Direction.Up;

What about constants? How do they differ in usage?

Constants in TypeScript are defined using the const keyword. For example:

const MAX_USERS = 100;

Unlike enums, constants are single values and cannot represent a group of related values.

When should I use enums instead of constants?

Use enums when you have a set of related values that you want to group together, making your code more readable. Use constants for single values that won't change.