.every()

The .every() method iterates through each element in the list and returns a boolean value indicating whether all elements satisfy the given condition.

Syntax

list.every((e) => condition)

• list: The collection (such as a List) on which the .every() method is called. This is the list that will be checked against the given condition.
• e: Represents each individual element in the list.
• condition: The condition that each element is tested against. This is a boolean expression or function that determines whether the .every() method should return true or false.

Example

The following example shows how .every() method works:

void main() {
  // Define a list of integers
  List<int> numbers = [2, 4, 6, 8];

  // Use the .every() method to check if all elements in the list are even
  // The lambda function (e) => e % 2 == 0 returns true if the element is even
  bool allEven = numbers.every((e) => e % 2 == 0);

  // Print the result: "Are all elements even: true"
  print("Are all elements even: $allEven");
}

The output for the above code will be:

Are all elements even: true