Swift - Storing Collections of Data Using Array(count method (length))

The Swift Programming Language
Apple Inc.

開発環境

• OS X Mavericks - Apple(OS)
• Xcode 6.0 Beta
• Swift (プログラミング言語)

Practical Programming: An Introduction to Computer Science Using Python 3 (Pragmatic Programmers) (Paul Gries (著)、Jennifer Campbell (著)、Jason Montojo (著)、Lynn Beighley (編集)、Pragmatic Bookshelf)のChapter 8(Storing Collections of Data Using Array)、8.9(Exercises) 8.をSwiftで考えてみる。

8.9(Exercises) 8.

コード(Xcode)

main.swift

//
//  main.swift
//  mple8
//
//  Created by kamimura on 8/28/14.
//  Copyright (c) 2014 kamimura. All rights reserved.
//

import Foundation

func isLonger<T1, T2>(a1:[T1], a2:[T2]) -> Bool {
    return a1.count > a2.count
}

func test<T1, T2>(a1:[T1], a2:[T2], b:Bool) {
    println(isLonger(a1, a2) == b)
}

test([1, 2, 3], [4, 5], true)
test(["abcde"], ["ab", "cd", "ef"], false)
test(["a", "b", "c"], [1, 2, 3], false)

入出力結果(Console Output)

true
true
true
Program ended with exit code: 0