Dart & Flutter – Variablz Academy

Dart & Flutter

Asynchronous Programming
- Can you explain async* and yield in Dart?
- Can you explain how Futures are chained in Dart?
- Can you explain how to use dart:async for error handling in streams and futures?
- Can you explain the concept of async stack traces in Dart and how to deal with them?
- Can you explain the lifecycle of a Future in Dart?
- Can you explain the Stream and Future lifecycle and handling complex async scenarios in Dart?
- How do you create a Stream in Dart? Provide an example.
- How do you handle cancellation of a Stream in Dart?
- How do you perform asynchronous programming in Dart?
- How do you use Future.delayed() in Dart? Give an example.
- How does the async and await work when nested?
- How does the await keyword work in Dart?
- What are async and await in Dart?
- What are the common use cases of the Stream class in Dart?
- What is a Stream and how is it used in Dart?
- What is a StreamTransformer in Dart, and how do you use it?
- What is the difference between a Stream and an Iterable in Dart?
- What is the difference between Future and Stream in Dart?
- What is the purpose of Future in Dart?
- What is the role of Future.wait() in Dart and how does it work?
- What is the significance of dart:async in Dart?
Build System
- How do you configure custom build systems in Dart?
Collections
- 03_How does Dart handle collections like List, Set, and Map in terms of immutability?
- How do you declare and initialize a Set in Dart?
- How does the List work in Dart? Can you give an example of using a list?
- What are the differences between a List and a Queue in Dart?
- What is a Map in Dart? How is it used?
- What is the difference between a List and a Set in Dart?
Compilation
- How does Dart manage compilation and deployment for mobile (Flutter) apps?
- How does Dart’s just-in-time (JIT) and ahead-of-time (AOT) compilation work?
Concurrency
- Can you explain how Dart handles multi-threading with Isolate?
- How do you create and use custom Isolate in Dart?
- How do you manage concurrency in Dart, particularly in Flutter applications?
- How does Dart support concurrency?
- What are isolates in Dart, and how do they help with parallelism?
- What is the Isolate in Dart? How is it different from a thread?
Conditional Statements
- How do you write a switch-case statement in Dart?
Data Types
- How do you interact with SQLite in Dart, and what packages do you use?
Debugging & Profiling
- Can you describe a time when you had to debug a complex issue in Dart?
- How would you approach debugging performance bottlenecks in Dart applications?
Dependency Injection
- 02_Can you explain how dependency injection works in Dart?
- How do you implement Dependency Injection (DI) in Dart?
Design Patterns
- How do you define a singleton pattern in Dart?
- How do you implement a factory pattern in Dart?
Exception Handling
- Can you explain the try, catch, and finally block in Dart?
- How do you create custom exceptions in Dart?
- How do you handle exceptions in Dart?
- What are the best practices for handling errors in Dart’s async functions?
FFI
- Can you explain how to integrate third-party native libraries with Dart in a Flutter app?
- How do you use ffi (Foreign Function Interface) in Dart to call native code?
- What is the dart:ffi library and how can it be used for system-level programming?
- What is the dart:ffi package used for in Dart?
File Handling
- How do you perform file I/O operations in Dart?
- How does the dart:io library interact with files in Dart?
Flutter Animations
- How do you implement complex animations in Flutter using Dart?
Flutter Async Widgets
- How do you use StreamBuilder in Flutter to handle data streams?
- What is a FutureBuilder widget in Flutter (Dart)?
Flutter Widgets
- Can you describe how you would implement a custom widget in Flutter using Dart?
Functional Programming
- How does Dart handle closures and lexical scoping?
- How does Dart support functional programming concepts?
- What are first-class functions in Dart?
Generics
- How do you handle generics in Dart?
Internationalization
- How do you handle internationalization and localization in Flutter/Dart?
Language Features
- What are extension methods in Dart, and when should you use them?
Loop Control Statement
- How do you write a basic for loop in Dart?
- What is the difference between for and while loops in Python?
Memory Management
- Can you explain the internals of Dart’s garbage collection process?
- How do you handle memory management and garbage collection in Dart?
- How do you optimize memory management in Dart and Flutter applications?
- How would you handle memory leaks in Dart/Flutter applications?
Mixins
- 01_How do you implement mixin classes in Dart?
- Can you explain the concept of mixins in Dart?
- What is the purpose of mixins in Dart? Provide an example.
Networking
- How can you perform HTTP requests in Dart?
- What is the difference between http and dio package in Flutter/Dart?
Null Safety
- Can you explain how Dart’s null safety works, and how to handle nullable types?
- How do you handle null values in Dart?
- What is the significance of the late keyword in Dart?
Object Oriented Programming
- How do you create a constructor in Dart?
- How do you define a class in Dart?
- How does inheritance work in Dart?
- What are getters and setters in Dart?
- What is an abstract class in Dart?
- What is an interface in Dart? How do you implement it?
- What is the difference between a named constructor and a default constructor in Dart?
- What is the difference between an instance variable and a static variable in Dart?
- What is the purpose of the super keyword in Dart?
- What is the purpose of the this keyword in Dart?
Operators
- What is the difference between == and identical() in Dart?
Package Management
- How do you manage and version your Dart dependencies using pubspec.yaml?
Performance Optimization
- How do you optimize a Dart program for performance?
- How would you optimize Dart code for large-scale applications?
- What are some performance considerations when working with Dart in production-level apps?
Program Structure
- How does the Dart VM differ from the JavaScript VM (in the context of Flutter)?
State Management
- How do you manage state in Flutter using Dart?
- How do you write a unit test for asynchronous code in Dart?
- How does the Provider package work for state management in Dart/Flutter?
Type Checking
- Can you explain the concept of is and is! operators in Dart?
- How can you perform a type check in Dart?
- What is the difference between is and as in Dart?
Type System
- Can you explain the concept of typedef in Dart?
- How does Dart handle type inference, and when should you explicitly declare types?
- What is the significance of typedef in Dart?
Variables
- How do you define a constant that is computed at runtime in Dart?
- How do you implement a factory pattern in Dart?
- What is the difference between var and dynamic in Dart?
Web Programming
- Can you explain the concept of dart:html and how Dart interacts with the web?