Scoped Enumerations for Explicit State

Snippet

Scoped Enumerations for Explicit State

Scoped enumerations ('enum class') prevent name collisions by requiring the scope operator. They are also strongly typed, meaning they won't implicitly convert to integers, which catches common logic errors during compilation.

snippet.cpp

cpp

#include <iostream>
 
enum class ConnectionStatus {
    Disconnected,
    Connecting,
    Connected
};
 
int main() {
    ConnectionStatus current = ConnectionStatus::Connecting;
 
    // Strongly typed: cannot be implicitly compared to integers
    if (current == ConnectionStatus::Connecting) {
        std::cout << "Establishing link..." << std::endl;
    }
 
    return 0;
}

Breakdown

enum class ConnectionStatus

Defines a scoped enum. Values must be prefixed with 'ConnectionStatus::'.

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Scoped Enumerations for Explicit State

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