实现循环滚动浏览图片的功能。浏览图片时，当前显示的图片的左右相邻图片都会露出一边，并且有阴影遮盖，并且相应缩小，以突出显示当前浏览的图片。当前浏览的图片支持点击事件，并且支持lazy loading（即按需加载显示，除了当前图片以及左右相邻图片，其他不显示的图片都不会保存在内存）。
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An Objective-C templating engine designed to be easy to use (single class, simple interface) with features enough to handle the cases commonly faced by developers in need of a such a library. The engine sits on top of the advanced key-value syntax and parsing done through Apple's NSPredicate and NSExpression classes for conditions and value expressions in templates.
shell script that used to auto-build xcode project
xctool is a replacement for Apple's xcodebuild that makes it easier to build and test iOS and Mac projects.
AVAssetExportSession drop-in replacement with customizable audio&video settings