Playing with lazy collections and maps and flats and stuff… (and getting really really confused)

MyPlayground.swift

let array = [1, 2, 3, 4, 5, 6]

array.map { (value) -> [Int] in
    print(value)
    return [value]
}

array.lazy.map { (value) -> [Int] in
    print("value: \(value)")
    return [value+1]
    }.first

array.lazy.flatMap { (value) -> [Int]? in
    print("value: \(value)")
    return value > 3 ? [value] : nil
}.first