The 'filterNot' function in Kotlin allows you to create a new collection by excluding elements that match a specified condition. This is particularly useful when you want to remove unwanted items from a list based on certain criteria, keeping your code clean and expressive.
val numbers = listOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
val evenNumbers = numbers.filterNot { it % 2 == 0 }
// evenNumbers will contain: [1, 3, 5, 7, 9]