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2014/10/15 ¤U¤È 10:12:22
iphone Programming Glossary: optimizingMaximum speed from IOS/iPad/iPhone http://stackoverflow.com/questions/11219240/maximum-speed-from-ios-ipad-iphone OpenCV for iOS . Of course it was slow. But it was something like 200 times slower than my PC prototype. So I was optimizing it down. From very first 15 seconds I was able to get 0.4 seconds speed. I wonder if I found all things and what others.. bad user experience if installed on old device. Of course I use O3 flag I deleted dead code from OpenCV. Often when optimizing OpenCV I see code which is clearly not needed for my project. For example often there is a extra if to check for pixel size..
Adding unique objects to Core Data http://stackoverflow.com/questions/1236122/adding-unique-objects-to-core-data array objectAtIndex 0 objective c iphone core data share improve this question This page provides some help on optimizing performance http developer.apple.com documentation Cocoa Conceptual CoreData Articles cdPerformance.html# apple_ref doc..
iOS 6 - Distinguishing between iPhone 5 and other devices? http://stackoverflow.com/questions/12398798/ios-6-distinguishing-between-iphone-5-and-other-devices between iPhone 5 and other devices With the announcement of the iPhone 5 and new iPods today I'm starting work on optimizing my app to take advantage of the new extra screen space. I've already got to the point where my app isn't letterboxed anymore...
NS String comparison fails with stringWithFormat http://stackoverflow.com/questions/1783719/ns-string-comparison-fails-with-stringwithformat When using pointers and comparing them using the operator like mutableCopy is being used to prevent the compiler from optimizing out the validity of this example. NSString string1 @ bobDole NSString string2 string1 mutableCopy NSLog @ d string1 string2..
Large scrolling background in OpenGL ES http://stackoverflow.com/questions/217822/large-scrolling-background-in-opengl-es is set to the window size 480 320 pixels. This is not meant to be fast I just wanted a working code before I get to optimizing. I thought that maybe the OpenGL implementation would be smart enough to discard the invisible portion of the background..
optimizing iPhone OpenGL ES fill rate http://stackoverflow.com/questions/2785640/optimizing-iphone-opengl-es-fill-rate iPhone OpenGL ES fill rate I have an Open GL ES game on the iPhone. My framerate is pretty sucky ~20fps. Using the Xcode..
Practical rules for premature optimization [closed] http://stackoverflow.com/questions/2978460/practical-rules-for-premature-optimization patterns share improve this question What is premature optimization Premature optimization is the process of optimizing your code usually for performance before you know whether or not it is worthwhile to do so. An example of premature optimization.. for performance before you know whether or not it is worthwhile to do so. An example of premature optimization is optimizing the code before you have profiled it to find out where the performance bottleneck is. An even more extreme example of premature.. profiled it to find out where the performance bottleneck is. An even more extreme example of premature optimization is optimizing before you have run your program and established that it is running too slowly. Are we at the point now where deciding between..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata
Mobile Website Development Resources http://stackoverflow.com/questions/4198107/mobile-website-development-resources into HTML5. I want to learn more about it in general but specifically about using geolocation detecting phone types optimizing css and a few other topics. Does anyone have suggestions on where to look Thanks iphone android html5 mobile website ..
MonoTouch performance vs. Objective-C/Java http://stackoverflow.com/questions/5698352/monotouch-performance-vs-objective-c-java That said both Objective C compiler and Mono's Ahead Of Time Compilation use the same LLVM backend for generating and optimizing the binary code so the results you will get should be almost identical with some memory overhead for Mono . Please remember..
How can I improve the performance of my custom OpenGL ES 2.0 depth texture generation? http://stackoverflow.com/questions/6051237/how-can-i-improve-the-performance-of-my-custom-opengl-es-2-0-depth-texture-gener inscribed and circumscribed octagons to use instead of my rectangles only I followed the recommendations here for optimizing triangles for rasterization. In previous testing octagons yielded worse performance than squares despite removing many unnecessary..
Why is UIBezierPath faster than Core Graphics path? http://stackoverflow.com/questions/6327817/why-is-uibezierpath-faster-than-core-graphics-path 30.4 UIBezierPath stroke 5051.0ms 30.4 QuartzTestView strokeUIBezierPath It looks like UIBezierPath is somehow optimizing the path that it creates or I'm creating the CGPath in a naïve way. What can I do to speed up my CGPath drawing iphone..
How to read objective-c stack traces http://stackoverflow.com/questions/6462214/how-to-read-objective-c-stack-traces but the signal handler has effectively destroyed additional forensic evidence. The trickzy comment references that an optimizing compiler against a big pile o' C can end up collapsing frames to the point that the crash could have happened in a function..
Embed Google Maps on page without overriding iPhone scroll behavior http://stackoverflow.com/questions/7534888/embed-google-maps-on-page-without-overriding-iphone-scroll-behavior Google Maps on page without overriding iPhone scroll behavior I'm working on optimizing a site for mobile. We have a Location page that includes info about a location and a map of the location via the Google..
Objective C Custom Lazy Load Images UITableView Cell http://stackoverflow.com/questions/9083454/objective-c-custom-lazy-load-images-uitableview-cell Custom Lazy Load Images UITableView Cell First time loading remote images into an iPhone app and would like some help optimizing the process. What I've currently done is get the image if it doesn't exist and cache it. The major goals are to only load..
Optimizing CLLocationManager/CoreLocation to retrieve data points faster on the iPhone http://stackoverflow.com/questions/1081219/optimizing-cllocationmanager-corelocation-to-retrieve-data-points-faster-on-the CLLocationManager CoreLocation to retrieve data points faster on the iPhone I'm currently using CoreLocation CLLocationManager..
Optimizing a drawing (with finger touches) application for iPhone SDK http://stackoverflow.com/questions/1123306/optimizing-a-drawing-with-finger-touches-application-for-iphone-sdk a drawing with finger touches application for iPhone SDK I'm writing an application that uses your finger to draw simple..
spin image clockwise/anticlockwise on touch http://stackoverflow.com/questions/1547171/spin-image-clockwise-anticlockwise-on-touch
Is there a Quick Guide on how to use Shark with iPhone to measure performance? http://stackoverflow.com/questions/1616548/is-there-a-quick-guide-on-how-to-use-shark-with-iphone-to-measure-performance a running instance of your application on an iPhone. As far as tutorials on how to use Shark there are the following Optimizing Your Application with Shark 4 Optimizing with Shark Big Payoff Small Effort Optimizing Your Application with System Trace.. on an iPhone. As far as tutorials on how to use Shark there are the following Optimizing Your Application with Shark 4 Optimizing with Shark Big Payoff Small Effort Optimizing Your Application with System Trace in Shark 4 Using Shark and custom DTrace.. Shark there are the following Optimizing Your Application with Shark 4 Optimizing with Shark Big Payoff Small Effort Optimizing Your Application with System Trace in Shark 4 Using Shark and custom DTrace probes to debug Nagios on Mac OS X Among the..
Starting point in learning Core Data on iPhone? http://stackoverflow.com/questions/3164300/starting-point-in-learning-core-data-on-iphone
Optimizing iPhone Application Launch Time http://stackoverflow.com/questions/317062/optimizing-iphone-application-launch-time iPhone Application Launch Time As anyone with an iPhone knows some applications launch quickly while others take several..
Optimizing Code for MKMapView - Large Number of Annotations http://stackoverflow.com/questions/7921106/optimizing-code-for-mkmapview-large-number-of-annotations Code for MKMapView Large Number of Annotations I have a modal view in my app which displays a UIMapView. I then add a large..
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