#Async

15 questions

• What is the event loop in Node.js and how does it work?Node.js#runtimeJunior›
• Compare callbacks, Promises and async/await.Node.js#asyncJunior›
• What utilities help work with async code (promisify, AbortController)?Node.js#asyncMiddle›
• What is the difference between blocking and non-blocking operations in Node.js?Node.js#asyncMiddle›
• What kinds of operations block the Node.js event loop?Node.js#asyncMiddle›
• What is a Promise and what states does it have?JavaScript#asyncMiddle›
• How does async/await work?JavaScript#asyncMiddle›
• How does the JavaScript event loop handle async work?JavaScript#asyncMiddle›
• How does async/await with asyncio work?Python#asyncSenior›
• When should you use async def vs def for endpoints?FastAPI#asyncJunior›
• How does async/await work in C#?C##asyncMiddle›
• How does Swift concurrency work with async/await, Task, actors, and @MainActor?iOS (Swift & SwiftUI)#asyncMiddle›
• When would you use Combine versus async/await for data streams?iOS (Swift & SwiftUI)#asyncSenior›
• What is the difference between blocking and non-blocking (sync vs async) I/O?Concurrency & Parallelism#asyncJunior›
• Explain async models: callbacks, promises, async/await, and the event loop.Concurrency & Parallelism#asyncMiddle›