前言 public struct Array<Element> : CollectionType, MutableCollectionType, _DestructorSafeContainer public class NSArray : NSObject, NSCopying, NSMutableCopying, NSSecureCoding, NSFastEnumeration 在 Swift 语言中,数据在被存储进某个数组之前,类型必须明确,且与数组其他元素类型相同.在 Swift 语
// // main.Swift // swift数组 // // Created by zhangbiao on 14-6-15. // Copyright (c) 2014年 理想. All rights reserved. // import Foundation println("数组") /* Swift 语言中的数组用来按顺序存储相同类型的数据 */ //1.定义数组 var numarr:Int[] = [1,3,5,7,9]; var strarr:String
本文首发在 CSDN<程序员>杂志,订阅地址 http://dingyue.programmer.com.cn/. Apple 在推出 Swift 时就将其冠以先进,安全和高效的新一代编程语言之名.前两点在 Swift 的语法和语言特性中已经表现得淋漓尽致:像是尾随闭包,枚举关联值,可选值和强制的类型安全等都是 Swift 显而易见的优点.但是对于高效一点,就没有那么明显了.在 2014 年 WWDC 大会上 Apple 宣称 Swift 具有超越 Objective-C 的性能,甚至某些情况
Use struct to create a structure. Structures support many of the same behaviors as classes, including methods and initializers. One of the most important differences between structures and classes is that structures are always copied when they are pa
Ever since the introduction of iOS, there is iOS development fever across the globe. Many iOS developers & companies are making fortunate out of it. By using Objective-C and Apple homebrew XCode SDK, there are more than 1 million apps in Appstore now
结论:value是拷贝,Reference是引用 Value and Reference Types Types in Swift fall into one of two categories: first, “value types”, where each instance keeps a unique copy of its data, usually defined as a struct, enum, or tuple. The second, “reference types”,