LucianoPAlmeida · March 28, 2019 02:54
diff --git a/Reversed.swift b/Reversed.swift
 let array = [1, 2, 3, 4, 5]

 let r1: [Int] = array.reversed() // Eager reverse implementation is O(n) when call the function
 let r2: ReversedCollection<[Int]> = array.reversed() // Lazy reversed collection is O(1) when you call the method.

 r1.first { $0 == 3 } // Interate 3 times + O(n) complexity of eager call.
 r2.first { $0 == 3 } // Interate 3 times + O(1) of lazy call. For a large array, this is an example where using a lazy type is more performant than an eager one.
	let array = [1, 2, 3, 4, 5]

	let r1: [Int] = array.reversed() // Eager reverse implementation is O(n) when call the function
	let r2: ReversedCollection<[Int]> = array.reversed() // Lazy reversed collection is O(1) when you call the method.

	r1.first { $0 == 3 } // Interate 3 times + O(n) complexity of eager call.
	r2.first { $0 == 3 } // Interate 3 times + O(1) of lazy call. For a large array, this is an example where using a lazy type is more performant than an eager one.