33
苹果开发中文网站iOS开发 单例使用问题
source link: http://www.cocoachina.com/ios/20190422/26860.html
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.
单例（Singletons），是Cocoa的核心模式之一。在iOS上，单例十分常见，比如：UIApplication，NSFileManager等等。虽然它们用起来十分方便，但实际上它们有许多问题需要注意。所以在你下次自动补全dispatch_once代码片段的时候，想一下这样会导致什么后果。
Recommend
About Joyk
Aggregate valuable and interesting links.
Joyk means Joy of geeK