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What is the ??= operator for?
Author: Edouard MarquezStatus: PublishedQuestion passed 1677 times
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Incorrect answer
Auteur anonyme18/08/2024
There is no ??= operator in Flutter/Dart
Flutter and Dart use the ?? operator, not ??=.
The ?? operator
The ?? operator is the null-aware coalescing operator. It provides a concise way to check if an expression is null and return an alternative value if it is.
Syntax:
Dart
expression1 ?? expression2
Use code with caution.
Behavior:
If expression1 is not null, the operator returns expression1.
If expression1 is null, the operator returns expression2.
Example:
Dart
String name = null;
String displayName = name ?? 'Guest'; // displayName will be 'Guest'
Use code with caution.
Remember: There's no assignment involved with ??. It's solely for checking null values and providing alternatives.
Auteur anonyme
26/08/2024
Dart documentation mention the `??=` operator : https://dart.dev/language/operators#assignment-operators