Category A tuple where the 1st element is an array of elements that passed the predicate (passed) and the 2nd element are the elements that failed the predicate (failed)
Iterable
const [numbers, strings] = partition(['a', 1, 'b', 2, 'c', 3], (element): element is number => typeof element === 'number');
console.log(numbers); // [1, 2, 3]
console.log(strings); // ['a', 'b', 'c']
Category Split an iterable into 2 arrays of elements that passed or failed a provided predicate.
Time complexity: O(n)
Space complexity: O(n)
The iterable to partition
The predicate to apply to each element of iterable. If the predicate returns a truthy value the element will be added to the passed
array in the result. Otherwise, it will be added to the failed array.
A tuple where the 1st element is an array of elements that passed the predicate (passed) and the 2nd element are the elements that failed the predicate (failed)
Iterable
const [odd, even] = partition([1, 2, 3, 4, 5, 6], num => num % 2);
console.log(odd); // [1, 3, 5]
console.log(even); // [2, 4, 6]
Split an iterable into 2 arrays of elements that passed or failed a provided type guard.
Time complexity: O(n)
Space complexity: O(n)