By Brandon Alexander
Building in your wisdom of ways to jot down simple applications, Pro iOS five instruments: Xcode, tools and construct Tools shows tips on how to take your apps from promising to actual, and from sturdy to nice, by utilizing a variety of functionality and debugging concepts and instruments present in Xcode, Apple's built-in improvement setting (IDE), Interface Builder and more.
you are going to begin by means of learning an alpha-stage iOS app and studying how one can use the instruments supplied within the iOS developer's toolbox, plus well known third-party instruments, to take an app to a last product and able to send. your individual app improvement is simply not a similar again!
- Learn the instruments on hand to all iOS builders: Xcode, tools, community diagnostic instruments and model keep an eye on
- Techniques for debugging through the use of tools, in addition to the recent positive factors on hand in most modern model of Xcode
- Performance tuning options and workflow improvements
Read Online or Download Pro IOS 5 Tools: Xcode Instruments and Build Tools PDF
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Extra resources for Pro IOS 5 Tools: Xcode Instruments and Build Tools
This will make the ivar block of the class look like this: @interface SuperCheckoutAPIEngine : NSObject
The answer is yes. No matter how sophisticated our tools get, they won’t catch everything. The most likely error we’ll run into with ARC is the retain cycle. A retain cycle is defined as an object graph that contains a closed loop of retained references. Figure 4–6 shows a typical retain cycle. If we release objects A and B, ARC will think that the rest of the objects are still in use and will not insert the appropriate release statements. CHAPTER 4: Memory Management and Diagnostics A B 3 1 1 1 Figure 4–6.
When we convert our project to ARC, we might run into some of these rules during the conversion. If we do, we’ll talk about them. Converting to ARC We’re going to convert Super Checkout to ARC now. This conversion will require some major surgery on the code base, which is why we branched the code. So, without further ado, let’s start the conversion. The first thing is open up the project and go to Edit ➤ Refactor ➤ Convert to Objective-C ARC. When you do this, a sheet (see Figure 4–2) is displayed.