What are some advanced usage patterns for enums in TypeScript?

What are some advanced usage patterns for enums in TypeScript?

Enums in TypeScript can be used in various advanced ways, such as computed enums, heterogeneous enums, and more. Would you like to explore a specific pattern?

Yes, can you explain computed enums?

Sure! Computed enums allow you to define enum values based on expressions. For example, you can use a function to compute the value of an enum member.

Can you give me a code example of that?

Absolutely! Here's a simple example:

enum MathOperations {
    Add = 1,
    Subtract = Add + 1,
    Multiply = Subtract + 1
}

In this case, Subtract is computed based on the value of Add.

That's really interesting! What about heterogeneous enums?

Heterogeneous enums allow you to mix string and numeric values in the same enum. For example:

enum MixedEnum {
    No = 0,
    Yes = 'YES'
}

This can be useful in certain scenarios where you need both types.