Dart Set first
Syntax & Examples

Set.first property

The `first` property in Dart returns the first element of the set.

Syntax of Set.first

The syntax of Set.first property is:

 E first

This first property of Set returns the first element.

Return Type

Set.first returns value of type E.

✐ Examples

1 Retrieve the first number

In this example,

We create a Set numbers containing integers.
We access the first property to retrieve the first number from the set.
We print the first number to standard output.

Dart Program

void main() {
  Set<int> numbers = {1, 2, 3, 4, 5};
  int firstNumber = numbers.first;
  print('First number in the set: $firstNumber');
}

Output

First number in the set: 1

2 Retrieve the first character

In this example,

We create a Set characters containing characters.
We access the first property to retrieve the first character from the set.
We print the first character to standard output.

Dart Program

void main() {
  Set<String> characters = {'a', 'b', 'c', 'd', 'e'};
  String firstCharacter = characters.first;
  print('First character in the set: $firstCharacter');
}

Output

First character in the set: a

3 Retrieve the first string

In this example,

We create a Set strings containing strings.
We access the first property to retrieve the first string from the set.
We print the first string to standard output.

Dart Program

void main() {
  Set<String> strings = {'apple', 'banana', 'cherry', 'date'};
  String firstString = strings.first;
  print('First string in the set: $firstString');
}

Output

First string in the set: apple

Summary

In this Dart tutorial, we learned about first property of Set: the syntax and few working examples with output and detailed explanation for each example.