wiky apps: Objective C

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Showing posts with label Objective C. Show all posts
Showing posts with label Objective C. Show all posts

Monday, August 29, 2016

Monday, August 17, 2015

How to convert a decimal number to binary in Swift?

You can convert the decimal value to a human-readable binary representation using the String initializer that takes a radix parameter: ...
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What is the difference between -viewWillAppear: and -viewDidAppear:?

In general, this is what I do: 1) ViewDidLoad - Whenever I'm adding controls to a view that should appear together with the view,...
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Looking to understand the iOS UIViewController lifecycle

All these commands are called automatically at the appropriate times by iOS when you load/present/hide the view controller. It's impo...
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How to set iPhone UI View z index?

UIView siblings are stacked in the order in which they are added to their superview. The UIView hierarchy methods and properties are ther...
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Thursday, August 6, 2015

How Not to Crash #3: NSNotification

In general, I prefer NSNotification to KVO and (especially) to bindings. I do use KVO sometimes — there are times when it's the most ...
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UIGestureRecognizer Tutorial: Creating Custom Recognizers

Custom gesture recognizers delight users by making apps feel unique and alive. If basic taps, pans, and rotations are the utility and pic...
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iOS9 Day-by-Day :: Day 2 :: UI Testing

Automated User Interface Testing is a valuable tool when developing any software application. It can detect problems with your app quickl...
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iOS9 Day-by-Day :: Day 5 :: Xcode Code Coverage Tools

Code coverage is a tool that helps you to measure the value of your unit tests. High levels of code coverage give you confidence in your ...
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Tuesday, July 7, 2015

Monday, June 29, 2015