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2014/10/15 ¤U¤È 10:04:55
iphone Programming Glossary: castingPassing a ManagedObjectContext to a second view http://stackoverflow.com/questions/1074539/passing-a-managedobjectcontext-to-a-second-view data share improve this question You can suppress the ' managedObjectContext' not found in protocols warning by casting your application delegate first if managedObjectContext nil managedObjectContext MyAppDelegateName UIApplication sharedApplication..
Selective Autorotation within a UINavigationController and UITabBarController http://stackoverflow.com/questions/1196758/selective-autorotation-within-a-uinavigationcontroller-and-uitabbarcontroller I wanted to avoid the UIView but this was the only way I could get self.view to be assigned to something. I suspect casting a UIScrollView to UIView in viewDidLoad is not advisable. So now we have a nav bar and a scroll view. I've set it up to..
MKAnnotationView fault when zoom in/out changed the pin image http://stackoverflow.com/questions/13745211/mkannotationview-fault-when-zoom-in-out-changed-the-pin-image mapView addAnnotation ann Then in viewForAnnotation read the custAttr property from the annotation parameter after casting it to MapAnnotation instead of referencing the externally declared custAttr . You may want to use a different name for the..
Strange problem comparing floats in objective-C http://stackoverflow.com/questions/1614533/strange-problem-comparing-floats-in-objective-c 0.1 the if statement is not fulfilled and the code not executed I found out that I can fix this by casting 0.1 to float. Like this if self.scroller.currentValue float 0.1 This works fine. Can anyone explain to my why this is happening.. explain to my why this is happening Is 0.1 defined as a double by default or something Thanks. iphone objective c casting floating point share improve this question I believe having not found the standard that says so that when comparing.. Now using a float gives you a small error. Using a double gives you an even smaller error. The problem now is that by casting the float to a double you carry over the bigger of error of the float . Of course they aren't gone compare equal now. Instead..
http://stackoverflow.com/questions/2455384/iphone-cocoa-coding-standards Cocoa Coding Standards Are there any generally accepted coding standards naming casting etc that apply specifically to iPhone Cocoa Objective C I know Microsoft has published similar standards as they relate..
Iphone UITextField only integer http://stackoverflow.com/questions/2719680/iphone-uitextfield-only-integer . it return me 0 and I don't know how to detect that it is not only numbers. How can I do iphone objective c casting share improve this question http rosettacode.org wiki Determine_if_a_string_is_numeric#Objective C Or you could ensure..
How many times do I release an allocated or retained object? http://stackoverflow.com/questions/3730804/how-many-times-do-i-release-an-allocated-or-retained-object
How to use a xib and a UIView subclass together? http://stackoverflow.com/questions/4071738/how-to-use-a-xib-and-a-uiview-subclass-together
How programatically move a UIScrollView to focus in a control above keyboard? http://stackoverflow.com/questions/484855/how-programatically-move-a-uiscrollview-to-focus-in-a-control-above-keyboard
iPhone FFT with Accelerate framework vDSP http://stackoverflow.com/questions/6358764/iphone-fft-with-accelerate-framework-vdsp in the real domain. for i 0 i n i originalReal i float i 1 Look at the real signal as an interleaved complex vector by casting it. Then call the transformation function vDSP_ctoz to get a split complex vector which for a real signal divides into an..
Is programmatically inverting the colors of an image possible? http://stackoverflow.com/questions/6672517/is-programmatically-inverting-the-colors-of-an-image-possible get width and height as integers since we'll be using them as array subscripts etc and this'll save a whole lot of casting CGSize size self.size int width size.width int height size.height Create a suitable RGB alpha bitmap context in BGRA colour..
CoreAudio AudioTimeStamp.mHostTime clock frequency? http://stackoverflow.com/questions/675626/coreaudio-audiotimestamp-mhosttime-clock-frequency in case you want to convert this number into a real time unit double hTime2nsFactor double tinfo.numer tinfo.denom By casting the first number to double GCC automatically casts the second number to double as well and the result will also be double..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown you'll probably eventually send a message to a zombie and crash. There are ways to work around this with bridged casting but really it'd be better to simply use the IMP and function pointer methodology above. Since consumed parameters are rarely..
Scrolling with two fingers with a UIScrollView http://stackoverflow.com/questions/787212/scrolling-with-two-fingers-with-a-uiscrollview to UIScrollView by creating a class that looks similar to UITouch. Underlying C code does not check types so maybe casting YourTouch into UITouch will work and you will be able to trick UIScrollView into handling the touches that did not really..
Weak and strong property setter attributes in Objective-C http://stackoverflow.com/questions/7912555/weak-and-strong-property-setter-attributes-in-objective-c parent retains the child and the child retains the parent so neither is ever released . The 'toll free bridging' part casting from NS to CF is a little tricky. You still have to manually manage CFRelease and CFRetain for CF objects. When you convert..
http://stackoverflow.com/questions/806115/toll-free-bridges and NSStream. Does a resource exists documenting all of these bridges and how to use them Is it just as simple as casting from an object of one type to another I ask as at the moment I am using NSStream calls that are not stricly allowed within.. improve this question Toll free bridging means that the data structures are interchangeable. It is just as simple as casting that's the toll free part. Anyplace you can use the type on one side of the bridge you can use the other. So for example..
Accessing parent view controller (custom) properties http://stackoverflow.com/questions/956990/accessing-parent-view-controller-custom-properties 54 46.502 Venue 29729 20b MainViewController 0x536600 Since it's seen as a MainViewController instance I doubt using casting would help. Is my only other option to initialize the HomeViewController with a copy of the venue or am I just doing something..
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