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YCFirstTime. Run Swift code once per install, once per app version, or once every N days.
30YCTutorialBox. A UIView subclass for Tutorial/Welcome/New Feature/Explanation flow. You can focus one element in the screen and show instructions about this element. Also, you can run blocks of code after the user closes the box/dialog.
13YCSlideShowImageView. A very simple subclass of UIImageView with the option to animate like a Slide Show between 2+ images.
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