[Solved] Identify the error in this code snippet: func stream() async -> AsyncStream { print("Stream started") AsyncStream { continuation in continuation.yield(1) continuation.finish() } } | iOS Swift

iOS Swift - Concurrency

Identify the error in this code snippet:

func stream() async -> AsyncStream {
  print("Stream started")
  AsyncStream { continuation in
    continuation.yield(1)
    continuation.finish()
  }
}

AAsyncStream cannot be returned from async functions

BMissing 'return' keyword before AsyncStream

CContinuation must yield values asynchronously

Dfinish() must be called outside the closure

Step-by-Step Solution

Solution:

Step 1: Check function return statement
The function declares a return type but does not use 'return' to return the AsyncStream instance.
Step 2: Confirm correct syntax
Adding 'return' before AsyncStream fixes the error.
Final Answer:
Missing 'return' keyword before AsyncStream -> Option B
Quick Check:
Functions must 'return' values explicitly [OK]

Quick Trick: Always use 'return' to output values from functions [OK]

Common Mistakes:

Omitting 'return' in functions
Thinking AsyncStream can't be returned async
Misplacing finish() call

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More iOS Swift Quizzes

Identify the error in this code snippet:

Step 1: Check function return statement

Step 2: Confirm correct syntax

Final Answer:

Quick Check:

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