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

1 vote170 views1 answer
Flutter floting action button shadow remove
Dart
0 vote172 views1 answer
Verified publisher account on pub.dev using google blogger
Dart
2 votes166 views1 answer
Vscode dart
Dart
5 votes163 views2 answers
How to create a round CheckBox in Flutter
Dart
1 vote172 views1 answer
If directory exists flutter
Dart
2 votes154 views2 answers
Convert future list to list dart
Dart
0 vote168 views1 answer
Forloop in dart stack overflow
Dart
1 vote181 views1 answer
Convert iso date string into date and time string flutter
Dart
1 vote155 views1 answer
Text input validation message color flutter
Dart
1 vote158 views1 answer
Ink image clip flutter
Dart