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24 interview questionsfor developers (2025)

Test your developer skills before an interview with 24 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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Flutter
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24 questions
Easy
17 votes1983 runs0 comment

List the different build modes in Flutter

Mobile developer
build
modes
Clément Devos (W3D Team)at Jan 4, 2022
Easy
9 votes1966 runs0 comment

Explain the difference between the `main` and `runApp` methods in Flutter.

Mobile developer
flutter
main
runApp
Clément Devos (W3D Team)at Jan 4, 2022
Easy
8 votes1798 runs0 comment

Explain the difference between the *final* and *const* keywords in Flutter.

Mobile developer
flutter
const
final
Clément Devos (W3D Team)at Jan 4, 2022
Medium
7 votes2026 runs
6 comments

What is Dash?

Mobile developer
dart
flutter
Clément Devos (W3D Team)at Jan 4, 2022
Hard
6 votes1774 runs0 comment

How to communicate with Android/ iOS code with Flutter?

Mobile developer
flutter
android
ios
Clément Devos (W3D Team)at Jan 4, 2022
Easy
5 votes1917 runs0 comment

Explain the difference between a Hot Restart and a Hot Reload in Flutter.

Mobile developer
flutter
hot reload
hot restart
Clément Devos (W3D Team)at Jan 4, 2022
Expert
5 votes1878 runs1 comment

What is the BuildContext used for in Flutter?

Mobile developer
flutter
widgets
buildcontext
Clément Devos (W3D Team)at Jan 4, 2022
Easy
5 votes1806 runs0 comment

What are the different types of Dart Streams?

Mobile developer
dart
streams
Clément Devos (W3D Team)at Jan 4, 2022
Hard
5 votes1724 runs0 comment

How to make a Text widget display a double yellow highlight in Flutter

Mobile developer
flutter
theme
Clément Devos (W3D Team)at Jan 4, 2022
Hard
4 votes1756 runs0 comment

What are Dart Isolates?

Mobile developer
dart
isolates
Clément Devos (W3D Team)at Jan 4, 2022
Hard
4 votes1059 runs0 comment

What are Semantics in Flutter?

Mobile developer
flutter
widgets
Clément Devos (W3D Team)at Jan 4, 2022
Hard
4 votes897 runs2 comments

What are the differences between the Offstage Widget and Opacity?

Mobile developer
flutter
widget
opacity
Clément Devos (W3D Team)at Jan 4, 2022
Easy
3 votes1810 runs1 comment

What is the `??=` operator for in Flutter?

Mobile developer
operators
null
Clément Devos (W3D Team)at Aug 26, 2024
Easy
3 votes1733 runs0 comment

What is the difference between an Exception and an Error in Flutter?

Mobile developer
flutter
exceptions
Clément Devos (W3D Team)at Jan 4, 2022
Medium
3 votes423 runs0 comment

What is the difference between a package and a plugin in Flutter?

Mobile developer
flutter
plugin
Anonymous authorat May 15, 2023
Easy
3 votes294 runs0 comment

What is a mounted Widget in Flutter?

Mobile developer
flutter
widget
state
Vincent Cotroat Nov 3, 2023
Medium
2 votes1894 runs1 comment

How to detect that the code is in release mode in Flutter?

Mobile developer
constants
release
Clément Devos (W3D Team)at Jan 4, 2022
Hard
2 votes1739 runs0 comment

What is overflow in Flutter?

Mobile developer
flutter
widgets
Clément Devos (W3D Team)at Jan 4, 2022
Easy
1 vote1762 runs1 comment

How to intercept the Back button on Android in Flutter?

Mobile developer
flutter
widgets
Clément Devos (W3D Team)at Jan 4, 2022
Medium
1 vote1477 runs0 comment

What does the deferred keyword do in Dart?

Mobile developer
dart
imports
Clément Devos (W3D Team)at Jan 4, 2022