[Solved] In Swift, what is the effect of declaring a function with the async keyword? — Ans: It allows the function to perform asynchronous operations and be awaited. | iOS Swift

iOS Swift - Concurrency

In Swift, what is the effect of declaring a function with the async keyword?

AIt makes the function execute on the main thread only.

BIt allows the function to perform asynchronous operations and be awaited.

CIt forces the function to return immediately without any result.

DIt disables error handling inside the function.

Step-by-Step Solution

Solution:

Step 1: Understand async keyword
The async keyword marks a function as asynchronous, meaning it can perform work that might take time without blocking the thread.
Step 2: Effect on function calls
Such functions must be called with await to suspend execution until the async work completes.
Final Answer:
It allows the function to perform asynchronous operations and be awaited. -> Option B
Quick Check:
Async means function can be awaited [OK]

Quick Trick: Async marks functions for awaiting [OK]

Common Mistakes:

Master "Concurrency" in iOS Swift

9 interactive learning modes - each teaches the same concept differently

More iOS Swift Quizzes

In Swift, what is the effect of declaring a function with the async keyword?