Why is enum class preferred over plain enum?

Why is enum class preferred over plain enum? 🤔

🚀 Introduction:

So, you've heard people singing praises about using enum classes in C++, but you're wondering what all the hype is about? Well, buckle up because we're about to dive into the world of enum classes and discover why they are preferred over plain enums! 💪

📌 Understanding the issue:

Let's start by understanding the problem with regular enums. Enumerations are a useful way to define a set of named constants, but they have a limitation - they lack type safety.

In plain enums, the underlying type is implicitly convertible to an integral type. This means that we can assign any arbitrary value outside the range of the defined constants, leading to potential bugs and unintended behavior. 😱

💡 Enter the enum class:

Here comes the hero of our story - the enum class! Also known as strongly-typed enums, enum classes were introduced in C++11 to address the shortcomings of plain enums. They bring in that much-needed type safety to the table. 🦸‍♂️

✅ Benefits of using enum class:

Now that we understand the problem, let's look at some reasons why enum classes are preferred over plain enums:

1. Type Safety:

Enum classes restrict the values to only those that are explicitly defined. This prevents accidental assignments of invalid values, reducing the likelihood of bugs creeping into your code. 🛡️

2. No Implicit Conversions:

Unlike plain enums, enum classes do not have implicit conversions to their underlying integer types. This means you cannot accidentally mix and match enum values with integers or other enum types. It forces you to explicitly convert between them, which improves code clarity and reduces the room for confusion. 🚫🔄

3. Scoped Names:

Enum classes introduce scoping, meaning that the enumerators are contained within the scope of the enum class itself, preventing naming clashes with other variables or constants in your code. This leads to more modular and maintainable code. 🗂️

🔑 Example:

Let's consider a real-life example to illustrate the benefits of using enum classes. Imagine you are building a game engine and want to define different types of game entities. You might have an enum class called EntityType:

enum class EntityType {
    PLAYER,
    ENEMY,
    POWERUP
};

With this enum class, you can now use EntityType::PLAYER, EntityType::ENEMY, and EntityType::POWERUP as distinct types throughout your code. Any attempt to assign an invalid type, such as 10 or EntityType::MONSTER will result in a compilation error, alerting you to the mistake. This helps catch bugs early on and ensures only valid entity types are used. 🎮🐉

📣 Call-to-action:

Are you convinced of the power of enum classes? Give them a try in your next C++ project and experience the benefits firsthand! Don't forget to share your success stories and engage with us in the comments below! Let's level up our C++ game together! 🚀✨

Happy coding! 💻🎉