Which pattern allows one object to notify other objects about changes in its state in Swift?

Problem Statement

Explanation

The Observer pattern defines a one-to-many dependency so that when one object changes state, its dependents are notified. In Swift this is often implemented via NotificationCenter or Combine’s publishers/subscribers. Knowledge of this pattern is expected in iOS/Swift interviews.

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Design Patterns & Architecture in Swift

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Which pattern allows one object to notify other objects about changes in its state in Swift?

Problem Statement

Explanation

Practice Sets

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Master Interviews Anywhere, Anytime

Which pattern allows one object to notify other objects about changes in its state in Swift?

Problem Statement

Explanation

Practice Sets

Related Questions

What is the difference between `let` and `var` in Swift?

What does the `?` after a type name signify in Swift, e.g., `Int?`?

Which statement is true about `struct` vs `class` in Swift?

What is the purpose of a `guard` statement in Swift?

Which of these best describes a closure in Swift?

More from Swift

Master Interviews
Anywhere, Anytime