Dart set list spread operator

/*Dart 2.3 introduced the spread operator (...) and the null-aware spread operator (...?),
which provide a concise way to insert multiple values into a collection.
For example, you can use the spread operator (...) 
to insert all the values of a list into another list:*/
var list = [1, 2, 3];
var list2 = [0, ...list];//var list and values added to list2 wich contains 0 already.
assert(list2.length == 4);

/*If the expression to the right of the spread operator might be null, 
you can avoid exceptions by using a null-aware spread operator (...?):*/
var list;
var list2 = [0, ...?list];
assert(list2.length == 1);

Source: dart.dev

Similar codes

3 votes169 views1 answer
Android studio causing blue screen
Dart
14 votes129 views5 answers
Flutter get current date
Dart
2 votes143 views2 answers
Flutter string contains
Dart
1 vote150 views1 answer
How to check whether a list in dart is empty or not
Dart
0 vote157 views1 answer
Flutter contaienr
Dart
0 vote149 views2 answers
English_words.dart
Dart
1 vote146 views1 answer
Flutter safearea
Dart
6 votes141 views1 answer
Floating action button rectangle flutter
Dart
1 vote149 views1 answer
Dart tostring
Dart
5 votes159 views1 answer
DartPad requires localStorage to be enabled
Dart