Since version 2.3, Dart adds a new operator called spread which uses three dots ( … ) notations. It can be used to extend the elements of a Collection . The examples below show the usage of the notation on List , Set , and Map .
Read moreWhat is double question mark in Dart?
double question mark operator means “if null “. Take the following expression, for example. String a = b ?? ‘hello’; This means a equals b , but if b is null then a equals ‘hello’ .
Read moreWhat is double question mark in Dart?
double question mark operator means “if null “. Take the following expression, for example. String a = b ?? ‘hello’; This means a equals b , but if b is null then a equals ‘hello’ .
Read moreWhat does => mean in Dart?
This answer is not useful. Show activity on this post. You might have seen the => symbol in Dart code. This arrow syntax is a way to define a function that executes the expression to its right and returns its value . By using fat arrow => the curly brackets needs to be removed.
Read moreWhat does => mean in Dart?
This answer is not useful. Show activity on this post. You might have seen the => symbol in Dart code. This arrow syntax is a way to define a function that executes the expression to its right and returns its value . By using fat arrow => the curly brackets needs to be removed.
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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