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Memory leak detection tools
(11 answers)
Closed 6 years ago.
Totally new at Swift 2.
How can I check for Memory Leaks in my app designed in Swift? I was checking in Google but there are too many documents on it. I'm using Xcode 7, do I have to download any tool to do this?
Thank you in advance.
Kindly go through this tool provided by apple.
Instruments
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Where are the UIKit Framework implementation files located?
(2 answers)
Closed 6 years ago.
I was just wondering if there is a way to read the internal implementation of Apple's API on ios? For example, is there a way I can see how "setNeedsDisplay()" function of UIView is implemented internally? I think this will help me understand how the code actually works.
The source code to the Apple frameworks is not publicly-available. You can disassemble the framework code, but unless you're really good with assembly language, you probably won't learn much.
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Closed 7 years ago.
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I have released several apps written in Swift 2.0 and 2.1. Now Apple just open source Swift and announced that Swift 3.0 will be released next year. So will my apps still works after Swift 3.0's release?
I think you are asking two separate questions here.
Will your app execute on the new OS when Swift 3 is launched?
Will your app work on the new OS when it is launched?
In regards to the first question, yes your app will execute even though it was compiled against Swift 2. Swift apps have the Swift runtime libraries embedded in their bundles so you are safe in this regard. You will notice that Swift bundles are always about 4-5 MB larger than their Objective-C counterparts and this is precisely why.
In regards to the second question, as with any new OS release there is no guarantee that your apps will work as they did on previous versions of the OS. Although, from my experience Apple has done a pretty decent job of keep things backwards compatible over the last couple of OS releases, though your mileage may vary.
If you're asking if your code written in Swift 2.0 / 2.1 will compile under Swift 3.0, it's possible that it won't. Quoted from Swift Programming Language Evolution:
Full source compatibility: Swift 3.0 will not provide full source compatibility. Rather, it can and will introduce source-breaking changes needed to support the main goals of Swift 3.0.
But like #Randy said, your previously-compiled app will still run.
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Swift: print() vs println() vs NSLog()
(6 answers)
Closed 7 years ago.
What is the difference between NSLog(), println, and print?
From my experience and understanding, they all write in the Console/Debugging area but why is there the change in Swift v1.2 and v2.0?
If you use 2.0 then print will offer more functionality, but they are still the same thing. Please refer to the documentation to see the added functionality.
https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/
Also don't use NSLog if you are using Swift
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api for showing native calculator in iOS app
(2 answers)
Closed 9 years ago.
Is it possible to start the iPhone calculator from within an iOS app?
I find it really annoying to have to leave an app and open the calculator just to "trig out" a right triangle and then return to the original app. I have a calculator class of my own however I would prefer not to reinvent the wheel for my app; especially with all the edge cases involved with Trig.
Can anyone offer some insight whether this is possible or suggest a possible implementation?
No, the calculator app doesn't have a public schema that you can use
to invoke it
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Playing system sound without importing your own
(11 answers)
Closed 9 years ago.
This is just a question that came off of the top of my head, but does anyone know if there are more sounds built into the system besides the (0x450) click sound? I would assume that there are others that can be put into apps since there are a lot more than just one built into the iPhone.
There is a list posted to AudioServices - iPhone Development Wiki. I've not yet figured out if using this in the following way is grounds for rejection:
AudioServicesPlaySystemSound(1103);
Don't forget to include:
#import <AudioToolbox/AudioToolbox.h>
Check all system sounds with: iOSSystemSoundsLibrary