Ray Wenderlich1 min readtutorialintro
Kodebits Day 98: Filter Evens [FREE]
Summary
This short Swift code challenge demonstrates the use of the `filter` higher-order function on an array. It asks to identify the output when filtering an array of integers to keep only even numbers. The expected output is `[2, 4, 6]`.
- Swift's `filter` method returns a new array containing elements that satisfy a given closure's condition.
- The `$0` syntax in a Swift closure refers to the first parameter passed to the closure.
- The `isMultiple(of:)` method is used to check for divisibility.
