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Swift Coding Reference Book

Edit constraints for a UI element

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April 22, 2018

Click on the constraints at the side with the mousepad until it is in editing mode.
Edit the constraint and press enter.

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Setting up a playground

June 04, 2017

1. Click on 'Get started with a playground'. Notes: Import UIKit - imports classes needed for interface development. At the right hand side, you will see an eye icon and a rectangular icon - show result. The right hand pane can be very useful.

Creating a class inside the app

June 09, 2017

Add a file (.swift). Type: class ClassName { var property1: String init(prop1: String) { self.property1 = prop1 } } When referring to properties, use self.propertyName

Playing or pausing a video in web view

April 14, 2018

webview.evaluateJavaScript("ytplayer.playVideo()") webview.evaluateJavaScript("ytplayer.pauseVideo()") webview.evaluateJavaScript("ytplayer.stopVideo()")

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