What is the difference between any() and every() in Dart?
Overview
In Dart, the any() and every() methods have the same syntax and are used to check the items in a list that satisfy a given condition. However, these methods work differently.
The any() method checks if at least one item in the List satisfies the given condition. any() returns a boolean value depending on the condition. In comparison, the every() method checks if all the items in the List satisfy the given condition. every() returns a boolean value depending on the condition.
any() syntax
bool any(bool test(E element));
every() syntax
bool every(bool test(E element));
Code
The following code demonstrates how to use the any() and every() methods in Dart.
void main(){// Creating listList numbers = [9, 5, 8, 17, 11, 15, 23];// Using any()// verify if at least one item in the list is greater than 7if (numbers.any((item) => item > 7)) {// Print resultprint('At least one number > 7 in the list');}// Using every()// Checks if all items in the list is less than 4// stores a boolean value// depending on the conditionvar flag = numbers.every((e) => e<4);// display resultif (flag) {print("All items are smaller than 4");} else {print("All items are greater than 4");}}
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