Streams & RxDart
Stream, StreamController, StreamBuilder, rxdart operators, BehaviorSubject, combineLatest
1What is a Stream in Dart?
What is a Stream in Dart?
Answer
A Stream is an asynchronous sequence of data that allows receiving values over time, unlike a Future which returns only a single value. Streams are particularly useful for handling user events, real-time data, or continuous data flows like WebSockets.
2What is the difference between a Single-subscription Stream and a Broadcast Stream?
What is the difference between a Single-subscription Stream and a Broadcast Stream?
Answer
A Single-subscription Stream can only have one listener at a time and retains events until listened to. A Broadcast Stream allows multiple simultaneous listeners but doesn't retain past events for new subscribers. The choice depends on the use case: file or HTTP for single, UI events for broadcast.
3How to create a simple Stream from a list of values in Dart?
How to create a simple Stream from a list of values in Dart?
Answer
Stream.fromIterable() creates a Stream from an existing collection, emitting each element asynchronously. This method is ideal for converting synchronous data into an asynchronous stream, for example to simulate data or for code uniformity with other data sources.
Which method should be used to listen to data from a Stream?
How to convert a Single-subscription Stream to a Broadcast Stream?
+21 interview questions
Other Flutter interview topics
Dart Basics
Dart Language Essentials
Flutter Fundamentals
Widget Lifecycle
Local Storage
Application Lifecycle
Layouts & Constraints
ListView & GridView
Navigation & Routing
Basic State Management
Provider Pattern
Networking & HTTP
JSON Serialization
Local Database
Forms & Validation
Animations
Firebase Integration
Unit Testing
Widget Testing
Build & Deployment
Package Management
Memory & Performance
Advanced State Management
Flutter Design Patterns
Performance Optimization
Platform Channels
Custom Painting
Flutter Application Architecture
Master Flutter for your next interview
Access all questions, flashcards, technical tests, code review exercises and interview simulators.
Start for free