You want to fetch user info and user posts concurrently using async/await in Swift. Which code correctly runs both tasks at the same time and waits for both results?

hard📝 Application Q15 of 15

iOS Swift - Concurrency

Alet user = await fetchUser() let posts = await fetchPosts()

BfetchUser() fetchPosts() print("Done")

Casync let user = fetchUser() async let posts = fetchPosts() let userInfo = await user let userPosts = await posts

DTask { let user = fetchUser() let posts = fetchPosts() print(user, posts) }

Step-by-Step Solution

Solution:

Step 1: Understand concurrent async calls
Using async let starts tasks concurrently without waiting immediately.
Step 2: Await both results
Awaiting user and posts later waits for both to finish, running in parallel.
Final Answer:
async let user = fetchUser() async let posts = fetchPosts() let userInfo = await user let userPosts = await posts -> Option C
Quick Check:
async let runs tasks concurrently = B [OK]

Quick Trick: Use async let to run tasks in parallel [OK]

Common Mistakes:

Awaiting tasks one after another (sequential)
Not awaiting async let variables
Calling async functions without await

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More iOS Swift Quizzes

You want to fetch user info and user posts concurrently using async/await in Swift. Which code correctly runs both tasks at the same time and waits for both results?

Step 1: Understand concurrent async calls

Step 2: Await both results

Final Answer:

Quick Check:

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