How to use String () or String?

Witch one to use: String () or String?   Depends … on how you do things! But! For my part, I’ve reduce bug crashing App when using: String ()   How? String? make’s it wait for a value from the user (problematic). String () set’s a nil value.   Why! If using String? and the user skip…

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How to create a iOS App Preview

How to create a iOS App Preview First look for the System Requirement: iOS device with Lightning connector Retina display iOS 8 A Mac with OS X Yosemite In other words: You can only use iPhone and iPad that have Lightning connector. Only iPhone and iPad with Retina Display And the iOS 8 For more questions go…

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Swift Programming Language is born.

Voici! Swift Apple’s new language for programing. Announce Announced in june 2014 at WWDC (World Wide Developer Conference) in San Francisco. Speed Apple say, it’s faster and easier to code. As I experimented, Yes, it’s fast and easyer for those who start or come from other programming laguage. Try it See how to dowload and…

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Why opening Xcode 6 is long – take’s forever

Why opening Xcode 6 is long … take’s time … forever When Xcode 6 is open for the first time, it can take up to a couple of minutes before it complete it’s first opening.   Why? … Security. Because Xcode look, compute a checksum on tens of thousands of files using over 5 GB…

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Change float to int

Change a float to int in Objective-C The Code float valueFloat = slider.value; int valueInt = (int) valueFloat; Explanation 1-The inital value is received from a slider in the App (slider.value). That inital value received is 3.1415 and have 4 decimals (1415). That’s what we call in programming a  »float ». 2-The slider.value 3.1415 is than…

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