Kotlin Coroutines and Flow

Asynchronous programming with Coroutines: launch, async, suspend functions, Dispatchers, Flow, StateFlow, SharedFlow

20 面接問題·

Mid-Level

What is a coroutine in Kotlin?

回答

A coroutine is a lightweight thread that allows writing asynchronous code sequentially. It can be suspended without blocking the thread, allowing other tasks to execute. More efficient than traditional threads.

What is the difference between launch and async?

回答

launch starts a coroutine that doesn't return a result (returns a Job). async starts a coroutine that returns a result via a Deferred (await()). Use async when you need the result.

What is the suspend keyword used for?

回答

suspend marks a function that can be suspended and resumed later without blocking the thread. These functions can only be called from other suspend functions or coroutines. They enable asynchronous operations.

Kotlin Coroutines and Flow

What is a coroutine in Kotlin?

回答

What is the difference between launch and async?

回答

What is the suspend keyword used for?

回答

What is a Dispatcher in coroutines?

When to use Dispatchers.IO?

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