2014/10/15 下午 10:05:40

iphone Programming Glossary: costly

How do I create a mutable array of CGImageRefs?

http://stackoverflow.com/questions/1392321/how-do-i-create-a-mutable-array-of-cgimagerefs

away with using a C array If so how do I construct it and how do I add elements to it later Is it significantly more costly to use UIImages instead of CGImageRefs as the elements of the collection iphone objective c arrays uikit cgimage share.. arrays uikit cgimage share improve this question Getting the CGImageRef out of an UIImage via image.CGImage can be costly. From the documentation If the image data has been purged because of memory constraints invoking this method forces that..

iPhone: how to use performSelector:onThread:withObject:waitUntilDone: method?

http://stackoverflow.com/questions/2584394/iphone-how-to-use-performselectoronthreadwithobjectwaituntildone-method

method execution completion waitUntilDone YES . Nothing helps. UPDATE I don't need this multithreading for separating costly operations to another thread. In this case I could use the performSelectorInBackground as mentioned in few answers. The..

Don't worry about `retainCount`? Really?

http://stackoverflow.com/questions/3354724/dont-worry-about-retaincount-really

through them doesn't that double the retain count and therefore the memory use of the application If so is this costly or trivial if the subviews are say 500 UIControl instances This is assuming that I need the 500 instances of course. iphone..

ipod touch / iphone development on Windows? [duplicate]

http://stackoverflow.com/questions/377672/ipod-touch-iphone-development-on-windows

As many point out if you stick an Apple sticker on your PC you're probably covered. The second option is the more costly. The EULA for the workstation version of Leopard prevents it from being run under emulation and as a result there's no support..

Does UIActivityIndicator require manual threading on iPhone

http://stackoverflow.com/questions/441345/does-uiactivityindicator-require-manual-threading-on-iphone

UIActivityIndicator require manual threading on iPhone I am running creating an iPhone application which performs a costly operation and I wanted to create an activityIndicator to let the user know the application has not frozen. The operation..

Develop iPhone applications using Microsoft Windows [duplicate]

http://stackoverflow.com/questions/68196/develop-iphone-applications-using-microsoft-windows

Get the extension of a file contained in an NSString

http://stackoverflow.com/questions/9245123/get-the-extension-of-a-file-contained-in-an-nsstring

would be is there an easier way to do this If not are my regex incorrect And finally if I have to use this is it costly in run time I don't know what the average amount of files a user will have will be. Thank you. iphone objective c regex..