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<a href="/2019/08/14/add-fireworks-and-sparks-to-a-uiview/" target="_blank" title="给 UIView 来点烟花" itemprop="url">给 UIView 来点烟花</a>
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<time datetime="2019-08-14T05:00:00.000Z" itemprop="datePublished">2019-08-14</time>
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<p>作者：Tomasz Szulc，<a href="http://szulctomasz.com/programming-blog/2018/09/add-fireworks-and-sparks-to-a-uiview/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-09<br>译者：<a href="https://github.com/joeytat" target="_blank" rel="noopener">Joeytat</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="https://github.com/WAMaker" target="_blank" rel="noopener">WAMaker</a>；定稿：<a href="undefined">Pancf</a></p>
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<span></span> <a href="/tags/Swift/">Swift</a><a href="/tags/教程/">教程</a>
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<a href="/2019/07/19/nshipster-bundles-and-packages/" target="_blank" title="Bundles and Packages" itemprop="url">Bundles and Packages</a>
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<p class="article-time">
<time datetime="2019-07-19T05:00:00.000Z" itemprop="datePublished">2019-07-19</time>
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<p>作者：Mattt，<a href="https://nshipster.com/bundles-and-packages/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-12-17<br>译者：<a href="https://github.com/WAMaker" target="_blank" rel="noopener">WAMaker</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="https://bignerdcoding.com/" target="_blank" rel="noopener">BigNerdCoding</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
</blockquote>
<!--此处开始正文-->
<p>在这个给予的季节，让我们停下脚步，思考一个现代计算机系统赐予我们的最棒的礼物：抽象。</p>
<p>在数百万 CPU 晶体管、SSD 扇区和 LCD 像素共同协作下，全球数十亿人能够日常使用计算机和移动设备而对此全然不知。这一切都应归功于像文件，目录，应用和文档这样的抽象。</p>
<p>这周的 NSHipster，我们将讨论苹果平台上两个重要的抽象：包与包裹。🎁</p>
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<a href="/2019/07/09/Sets-in-Swift/" target="_blank" title="Swift 中的集合（Set）" itemprop="url">Swift 中的集合（Set）</a>
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<p class="article-time">
<time datetime="2019-07-09T05:00:00.000Z" itemprop="datePublished">2019-07-09</time>
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<p>作者：Thomas Hanning，<a href="http://www.thomashanning.com/sets-in-swift/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-09-06<br>译者：<a href="https://github.com/rsenjoyer" target="_blank" rel="noopener">rsenjoyer</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://www.jianshu.com/users/596f2ba91ce9/latest_articles" target="_blank" rel="noopener">pmst</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<!--此处开始正文-->
<p>集合（Set）是 Swift 集合类型（collection types）之一，集合用来存储类型相同且没有确定顺序唯一的值。你可以将集合想象成一盒台球：它们在颜色和数量上独一无二，但在盒内是无序的。</p>
<p><img src="/img/articles/Sets-in-Swift/billiard.jpg1562643187.9223473" alt></p>
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<span></span> <a href="/tags/Swift，iOS开发，Swift进阶/">Swift，iOS开发，Swift进阶</a>
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<a href="/2019/07/01/photos-data-model/" target="_blank" title="PhotoKit 的数据模型" itemprop="url">PhotoKit 的数据模型</a>
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<time datetime="2019-07-01T05:00:00.000Z" itemprop="datePublished">2019-07-01</time>
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<p>作者：Ole Begemann，<a href="https://oleb.net/2018/photos-data-model/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-09-28<br>译者：<a href="https://github.com/zhangchi25806" target="_blank" rel="noopener">张弛</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://blog.yousanflics.com.cn" target="_blank" rel="noopener">Yousanflics</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<!--此处开始正文-->
<p>在 iOS 系统中，<a href="https://developer.apple.com/documentation/photokit" target="_blank" rel="noopener">PhotoKit 框架</a> 不仅被系统的照片 App 所使用，同时它也为开发人员访问设备的照片库提供了接口支持。而它的底层则是 <a href="https://developer.apple.com/documentation/coredata" target="_blank" rel="noopener">Core Data</a> 实现的。</p>
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<a class="article-category-link" href="/categories/PhotoKit/">PhotoKit</a>,<a class="article-category-link" href="/categories/PhotoKit/Ole-Begemann/">Ole Begemann</a>
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<a href="/2019/06/24/sequence-head-tail/" target="_blank" title="将 Swift 序列切分为头部和尾部" itemprop="url">将 Swift 序列切分为头部和尾部</a>
</h1>
<p class="article-time">
<time datetime="2019-06-24T05:00:00.000Z" itemprop="datePublished">2019-06-24</time>
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<p>作者：Ole Begemann，<a href="https://oleb.net/2018/sequence-head-tail/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-11-29<br>译者：<a href="https://github.com/WAMaker" target="_blank" rel="noopener">WAMaker</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="https://bignerdcoding.com/" target="_blank" rel="noopener">BigNerdCoding</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<!--此处开始正文-->
<p>函数式编程语言的一个常用范式是把一个列表切分为头部（第一个元素）和尾部（其余元素）。在 Haskell 中，<a href="https://en.wikibooks.org/wiki/Haskell/Pattern_matching" target="_blank" rel="noopener">x:xs</a> 会匹配非空列表，将头部绑定给变量 x，尾部绑定给 xs。</p>
<p><a href="https://academy.realm.io/posts/tryswift-rob-napier-swift-legacy-functional-programming/" target="_blank" rel="noopener">Swift 不是一门函数式编程语言</a>。既没有内置的 <code>List</code> 类型，也没有集合的特定匹配语法。<a href="#foot1" id="1"><sup>[1]</sup></a></p>
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<a href="/2019/05/06/implementing-a-heap-based-priority-queue-using-swift/" target="_blank" title="使用 Swift 实现基于堆的优先级队列" itemprop="url">使用 Swift 实现基于堆的优先级队列</a>
</h1>
<p class="article-time">
<time datetime="2019-05-06T05:00:00.000Z" itemprop="datePublished">2019-05-06</time>
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<blockquote>
<p>作者：APPCODA EDITORIAL TEAM，<a href="https://appcoda.com/swift-algorithm/" target="_blank" rel="noopener">原文链接</a>，原文日期：2019-01-07<br>译者：<a href="undefined">Roc Zhang</a>；校对：<a href="http://www.jianshu.com/users/596f2ba91ce9/latest_articles" target="_blank" rel="noopener">pmst</a>，<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
</blockquote>
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<p>在计算机科学中，有很多问题可以通过将底层数据结构用优先级队列实现来改善算法的时间复杂度。其中 Dijkstra 的最短路径算法便是一个例子，该算法使用了优先级队列来在图中搜索两个顶点间的最短路径。</p>
<p>不幸的是，Swift 的标准库中并没有提供优先级队列的默认实现。所以我们将会研究如何自行实现基于堆的优先级队列。</p>
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<span></span> <a href="/tags/Swift/">Swift</a><a href="/tags/Algorithm/">Algorithm</a><a href="/tags/Data-Structure/">Data Structure</a><a href="/tags/Priority-Queue/">Priority Queue</a>
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<a href="/2019/04/22/swift5-stringinterpolation-part1/" target="_blank" title="Swift 5 字符串插值-简介" itemprop="url">Swift 5 字符串插值-简介</a>
</h1>
<p class="article-time">
<time datetime="2019-04-22T05:00:00.000Z" itemprop="datePublished">2019-04-22</time>
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<blockquote>
<p>作者：Olivier Halligon，<a href="http://alisoftware.github.io/swift/2018/12/15/swift5-stringinterpolation-part1/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-12-15<br>译者：<a href="https://nemocdz.github.io/" target="_blank" rel="noopener">Nemocdz</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://blog.yousanflics.com.cn" target="_blank" rel="noopener">Yousanflics</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<!--此处开始正文-->
<p> <code>StringInterpolation</code> 协议最初的设计效率低下又不易扩展，为了在后续的版本中能够将其彻底重构，Swift 4 中将该协议标记为废弃。即将在 Swift 5 中亮相的 <a href="https://github.com/apple/swift-evolution/blob/master/proposals/0228-fix-expressiblebystringinterpolation.md" target="_blank" rel="noopener">SE-0228</a> 提案介绍了一种新的 <code>StringInterpolation</code> 设计，使得 String 有了更大的潜能。</p>
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<a href="/2019/04/15/core-bluetooth/" target="_blank" title="在 iOS 11 中使用 Core Bluetooth" itemprop="url">在 iOS 11 中使用 Core Bluetooth</a>
</h1>
<p class="article-time">
<time datetime="2019-04-15T05:00:00.000Z" itemprop="datePublished">2019-04-15</time>
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<p>作者：Andrew Jaffee，<a href="https://appcoda.com/core-bluetooth/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-04-17<br>译者：<a href="https://github.com/dzyding" target="_blank" rel="noopener">灰s</a>；校对：<a href="https://github.com/Cee" target="_blank" rel="noopener">Cee</a>，<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<p>作为 iOS 开发，我们十分清楚人们都喜欢互通性。我们喜欢通过无线设备与其他人进行沟通这一点是显而易见的。最近，我们开始希望能够与那些曾经被认为是独立的普通设备进行<em>通信</em>。我们开始喜欢，甚至是期望，部分无线设备可以收集并且分析自己的数据（通常称为“可穿戴设备”）。许多设备已经成为我们生活里的一部分，还为还有一个专门的术语来描述它：“Internet of Things” 或者 “IoT”（物联网）。现在地球上有数十亿的无线通讯设备。在这篇教程中，我们将聚焦 IoT 其中的一部分：蓝牙。 </p>
<p>我将说明蓝牙技术背后的基本概念，以及： </p>
<ul>
<li>展示如何精通蓝牙方向的软件开发，从而为你提供巨大的职业机遇 </li>
<li>提醒你必须去确认在发布一个使用蓝牙技术的应用时是否需要通过“资格审查” </li>
<li>给你提供 Apple 的<a href="https://developer.apple.com/documentation/corebluetooth" target="_blank" rel="noopener"><strong><em>Core Bluetooth</em></strong></a> 框架概述 (<a href="https://developer.apple.com/library/archive/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/AboutCoreBluetooth/Introduction.html#//apple_ref/doc/uid/TP40013257-CH1-SW1" target="_blank" rel="noopener"><strong>也可以参阅这里</strong></a>) </li>
<li>最后，带领你使用 Swift 4 并通过 <em>Core Bluetooth</em> 和一个蓝牙设备来开发一款用于监控心率的 iOS 应用程序</li>
</ul>
<blockquote>
<p>提示：注意跟随阅读文章中包含的超链接。对于开发者这是重要的资料，它确保你完全理解蓝牙的工作方式以及苹果是如何支持蓝牙这种技术的。</p>
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<a href="/2019/02/25/void/" target="_blank" title="Void" itemprop="url">Void</a>
</h1>
<p class="article-time">
<time datetime="2019-02-25T06:00:00.000Z" itemprop="datePublished">2019-02-25</time>
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<p>作者：Mattt，<a href="https://nshipster.com/void/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-10-31<br>译者：<a href="https://github.com/zhongWJ" target="_blank" rel="noopener">zhongWJ</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://www.jianshu.com/users/596f2ba91ce9/latest_articles" target="_blank" rel="noopener">pmst</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<!--此处开始正文-->
<p>从 <a href="https://nshipster.com/nil/" target="_blank" rel="noopener">我们第一篇关于 Objective-C 中的 <code>nil</code> 的文章</a> 到 <a href="https://nshipster.com/never/" target="_blank" rel="noopener">最近对 Swift 中 <code>Never</code> 类型的一瞥</a>，“不存在”一直是 NSHipster 讨论的话题。但今天的文章可能是它们当中充斥着最多如 <a href="https://en.wikipedia.org/wiki/Horror_vacui" target="_blank" rel="noopener">恐怖留白</a> 般细节的 —— 因为我们将目光聚焦在了 Swift 中的 <code>Void</code> 上。</p>
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<h1 itemprop="name">
<a href="/2019/02/21/the-beauty-of-swift-5-string-interpolation/" target="_blank" title="Swift 5 字符串插值之美" itemprop="url">Swift 5 字符串插值之美</a>
</h1>
<p class="article-time">
<time datetime="2019-02-21T06:00:00.000Z" itemprop="datePublished">2019-02-21</time>
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<blockquote>
<p>作者：Erica Sadun，<a href="https://ericasadun.com/2018/12/12/the-beauty-of-swift-5-string-interpolation/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-12-12<br>译者：<a href="https://www.roczhang.com/" target="_blank" rel="noopener">RocZhang</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://www.jianshu.com/users/596f2ba91ce9/latest_articles" target="_blank" rel="noopener">pmst</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<!--此处开始正文-->
<p>感谢提案 <a href="https://github.com/apple/swift-evolution/blob/master/proposals/0228-fix-expressiblebystringinterpolation.md" target="_blank" rel="noopener">SE-0228</a>，让我们能够精确控制字符串插值的打印方式。感谢 Brent 带给我们这个非常棒的功能。让我来分享一些例子。</p>
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<a href="/2019/02/18/protocols-private-properties/" target="_blank" title="协议中的私有属性" itemprop="url">协议中的私有属性</a>
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<p class="article-time">
<time datetime="2019-02-18T06:00:00.000Z" itemprop="datePublished">2019-02-18</time>
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<blockquote>
<p>作者：Olivier Halligon，<a href="http://alisoftware.github.io/swift/protocols/2018/09/02/protocols-private-properties/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-09-02<br>译者：<a href="https://github.com/dzyding" target="_blank" rel="noopener">灰s</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://linusling.com" target="_blank" rel="noopener">小铁匠Linus</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<!--此处开始正文-->
<p>在 Swift 中，协议中声明的属性没有访问控制的能力。如果协议中列出了某个属性，则必须使遵守协议的类型显式声明这些属性。 </p>
<p>不过有些时候，尽管你会在协议中声明一些属性，但你是要利用这些属性来提供你的实现，并不希望这些属性在类型的外部被使用。让我们看看如何解决这个问题。 </p>
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<a class="article-category-link" href="/categories/Olivier-Halligon/">Olivier Halligon</a>,<a class="article-category-link" href="/categories/Olivier-Halligon/Swift/">Swift</a>
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<a href="/2019/01/25/nshipster-swiftsyntax/" target="_blank" title="SwiftSyntax" itemprop="url">SwiftSyntax</a>
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<p class="article-time">
<time datetime="2019-01-25T06:00:00.000Z" itemprop="datePublished">2019-01-25</time>
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<blockquote>
<p>作者：Mattt，<a href="https://nshipster.com/swiftsyntax/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-10-22<br>译者：<a href="https://dingtz.com/" target="_blank" rel="noopener">jojotov</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://blog.yousanflics.com.cn" target="_blank" rel="noopener">Yousanflics</a>，<a href="http://www.jianshu.com/users/596f2ba91ce9/latest_articles" target="_blank" rel="noopener">pmst</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<p><a href="https://github.com/apple/swift-syntax" target="_blank" rel="noopener">SwiftSyntax</a> 是一个可以分析、生成以及转换 Swift 源代码的 Swift 库。它是基于 <a href="https://github.com/apple/swift/tree/master/lib/Syntax" target="_blank" rel="noopener">libSyntax</a> 库开发的，并于 <a href="https://github.com/apple/swift-syntax/commit/909d336aefacdcbdd45ec6130471644c1ae929f5" target="_blank" rel="noopener">2017 年 8 月</a> 从 Swift 语言的主仓库中分离出来，单独建立了一个仓库。</p>
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<a href="/2019/01/21/streaming-multipart-requests/" target="_blank" title="以流的形式执行 Multipart 请求" itemprop="url">以流的形式执行 Multipart 请求</a>
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<time datetime="2019-01-21T06:00:00.000Z" itemprop="datePublished">2019-01-21</time>
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<blockquote>
<p>作者：Soroush Khanlou，<a href="http://khanlou.com/2018/11/streaming-multipart-requests/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-11-14<br>译者：<a href="https://www.jianshu.com/u/076cc5e18bb8" target="_blank" rel="noopener">郑一一</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://www.jianshu.com/users/596f2ba91ce9/latest_articles" target="_blank" rel="noopener">pmst</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<p>Foundation 框架中的 URL 类提供了非常全面的功能，此后还在 iOS 7 中新增了 URLSession 类。尽管如此，基础库中仍然缺少 multipart 文件上传的功能。</p>
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<a href="/2019/01/15/nshipster-language-server-protocol/" target="_blank" title="Language Server Protocol" itemprop="url">Language Server Protocol</a>
</h1>
<p class="article-time">
<time datetime="2019-01-15T06:00:00.000Z" itemprop="datePublished">2019-01-15</time>
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<p>作者：Mattt，<a href="https://nshipster.com/language-server-protocol/" target="_blank" rel="noopener">原文链接</a>，原文日期：2018-11-19<br>译者：<a href="https://github.com/mobilefellow" target="_blank" rel="noopener">雨谨</a>；校对：<a href="http://numbbbbb.com/" target="_blank" rel="noopener">numbbbbb</a>，<a href="http://www.jianshu.com/users/596f2ba91ce9/latest_articles" target="_blank" rel="noopener">pmst</a>；定稿：<a href="http://forelax.space" target="_blank" rel="noopener">Forelax</a></p>
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<p>上个月，苹果公司 <a href="https://forums.swift.org/t/new-lsp-language-service-supporting-swift-and-c-family-languages-for-any-editor-and-platform/17024" target="_blank" rel="noopener">在 Swift.org 论坛上宣布</a>，正在着手为 Swift 和 C 语言支持 <a href="https://microsoft.github.io/language-server-protocol/" target="_blank" rel="noopener">Language Server Protocol</a>（语言服务器协议，LSP）。</p>
<blockquote>
<p>对于苹果公司而言，为所有 Swift 开发者 —— 包括非苹果平台上的 —— 提供高质量的工具支持非常重要。我们希望与开源社区合作，将精力集中在构建 Xcode 和其他编辑器、其他平台可以共享的公共基础设施上。为实现这一目标，[……]，我们决定支持 LSP。</p>
<p><em>Argyrios Kyrtzidis，2018 年 10 月 15 日</em></p>
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<p><strong>这可能是苹果自 2014 年将 Swift 作为开源软件发布以来，为 Swift 做出的最重要的决定。</strong> 这对于 APP 开发者来说是一件大事，对于其他平台上的 Swift 开发者来说更是一件大事。</p>
<p>为了理解其中的原因，本周的文章将研究 Language Server Protocol 解决了什么问题，它是如何工作的，以及它的长期影响可能是什么。</p>
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<a href="/2019/01/15/nshipster-language-server-protocol/#more" target="_blank">阅读全文</a>
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