double question mark operator means “if null “.
Read moreWhat are two question marks flutter?
double question mark operator means “if null “.
Read moreWHAT IS null check operator in Dart?
Null-aware operators are used in almost every programming language to check whether the given variable value is Null . The keyword for Null in the programming language Dart is null. Null means a variable which has no values assign ever and the variable is initialized with nothing like.
Read moreWhat is null safety in flutter?
Null Safety in simple words means a variable cannot contain a ‘null’ value unless you initialized with null to that variable . With null safety, all the runtime null-dereference errors will now be shown in compile time.
Read moreWHAT IS null check operator in Dart?
Null-aware operators are used in almost every programming language to check whether the given variable value is Null . The keyword for Null in the programming language Dart is null. Null means a variable which has no values assign ever and the variable is initialized with nothing like.
Read moreWhat is Dart function?
A function in Dart or in any programming language has a specific name and has a set of programming statements . The function can be called at any location of the program to run the statements it has and returns a result, or performs some operations.
Read moreWhat does <> mean in Dart?
This are generic type parameters. It allows specializations of classes. List is a list that can contain any value (if no type parameter is passed dynamic is used by default). List<int> is a list that only allows integer values and null `. You can add such Type parameters to your custom classes as well.
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