Explain the concept of delegates in IOS development.

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Explain the concept of delegates in IOS development.

In iOS development, delegates are a design pattern used to establish communication and pass information between objects. A delegate acts as an intermediary or a representative of an object and allows another object to perform specific tasks on its behalf.

Delegates are commonly used in iOS development to handle events, such as user interactions or data updates. By implementing delegate protocols, an object can delegate certain responsibilities or actions to another object that conforms to the delegate protocol. This allows for a separation of concerns and promotes modularity and reusability in code.

The delegate pattern in iOS development follows a specific structure. The delegating object typically defines a delegate property and a protocol that outlines the methods or properties that the delegate should implement. The delegate object then conforms to this protocol and is assigned as the delegate of the delegating object.

When a specific event or action occurs, the delegating object calls the appropriate delegate method, passing any necessary information as parameters. The delegate object can then handle the event, perform necessary actions, and return any required data back to the delegating object if needed.

Overall, delegates play a crucial role in iOS development by enabling objects to communicate and collaborate effectively, promoting code organization, and enhancing the flexibility and extensibility of applications.