How Swift Protocols Work

Swift protocols are a way to define shared interfaces that multiple types can conform to. They allow developers to:

• Define reusable abstractions.
• Separate concerns by breaking down functionality into smaller components.
• Extend functionality through protocol extensions without modifying existing code.

For example:

protocol Transaction {
    func execute() throws
}

protocol CrossChainTransaction: Transaction {
    func bridgeAssets() throws
}

This modular approach ensures that each component focuses on a specific responsibility while maintaining flexibility for future changes.