TypeScript for Coders – Chapter 05 : Enums

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Enums, short for enumerations, are a useful feature in programming that allow you to define a set of named values. This is particularly useful when you have a list of items that are related and you want to represent them in a consistent and organized way.

In TypeScript, you can create an enum by using the enum keyword, followed by a name for the enum and a list of values separated by commas. For example, you could create an enum for the days of the week, where each day is assigned a numerical value.

Enums can also be assigned explicit values, if desired. For example, you could assign the value of 0 to Monday, the value of 1 to Tuesday, and so on. By default, the values of an enum start at 0 and increment by 1 for each subsequent value, but this can be changed as needed.

Enums can be useful in many ways. For example, they can be used to make your code more readable and maintainable by giving descriptive names to values that are used frequently. They can also be used to enforce a specific set of values for a particular property, such as a list of available colors for a product.

Enums can also be used in combination with other features of TypeScript, such as switch statements. For example, you could use a switch statement to handle different cases based on the value of an enum, such as displaying different messages based on the day of the week.

In conclusion, enums are a powerful and useful feature in TypeScript that allow you to define a set of named values in a consistent and organized way. They can be used to make your code more readable and maintainable, and can be combined with other features of TypeScript, such as switch statements, to create more complex and sophisticated programs.

TypeScript for Coders – Chapter 05 : Enums


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