February 2017
Beginner to intermediate
472 pages
9h 53m
Chinese
Content preview from Swift学习手册
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310
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第
13
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//
获取文件列表
let iCloudFiles = try fileManager
.contentsOfDirectoryAtPath(documentsFolder.path!)
.map({
documentsFolder.URLByAppendingPathComponent($0,
isDirectory: false)
})
allFiles.appendContentsOf(iCloudFiles)
} catch {
//
记录错误，返回一个空数组
NSLog("Failed to get contents of iCloud container")
return []
}
}
//
过滤，只留下以“
.note
”结尾的文件，然后返回这些文件的
NSURL
return allFiles
.filter({ $0.lastPathComponent?.hasSuffix(".note") ?? false})
}
这个方法首先查看本地的
Documents
文件夹，然后访问
iCloud
容器（如果能访问的
话），再过滤数组，只留下以
.note
结尾的文件，最后返回一个由
NSURL
对象构成的数组。
添加到索引中的每个文档要使用一个 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.