Dart – Basics of Set
Set is a special type of collection in Dart programming. In which any object can occur only once. If we perform add operation in the set, if the object is already in the set then it will not add otherwise it will be added in the set. dart: core library provides the Set class for implementation.
Syntax: Identifier = new Set()
or
Identifier = new Set.from(Iterable)
Here, Iterable is the list of value which will be added in the set .
Example 1:
Dart
void main() { // create a new set number Set number = new Set(); // add in the set number.add(1); number.add(2); number.add(5); number.add(1); // all elements are retrieved // in the order in which // they are inserted for(var no in number) { print(no); } } |
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Output:
1 2 5
Example 2:
Dart
void main() { // Create a Set Number Which // contains a list of value Set number = new Set.from([1,11,14,11]); // all elements are retrieved // in the order in which // they are inserted for(var n in number) { print(n); } } |
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Output:
1 11 14
Example 3:
Dart
void main() { // Create a Set Number Which // contains a list of value Set number = new Set.from(['geeks','for','geeks']); // all elements are retrieved // in the order in which // they are inserted for(var n in number) { print(n); } } |
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Output:
geeks for
