2014/10/15 下午 10:12:51

iphone Programming Glossary: premature

iPhone - Corrupt JPEG data for image received over HTTP

http://stackoverflow.com/questions/1064920/iphone-corrupt-jpeg-data-for-image-received-over-http

imageWithData receivedData Usually it works just fine but sometimes I'm seeing this get logged Corrupt JPEG data premature end of data segment At this point the image does not completely render. I'll see maybe 75 of it and then the lower right..

Practical rules for premature optimization [closed]

http://stackoverflow.com/questions/2978460/practical-rules-for-premature-optimization

rules for premature optimization closed It seems that the phrase Premature Optimization is the buzz word of the day. For some reason iphone.. Optimization is the buzz word of the day. For some reason iphone programmers in particular seem to think of avoiding premature optimization as a pro active goal rather than the natural result of simply avoiding distraction. The problem is the term.. For example I've seen a growing number of people say not to worry about the complexity of an algorithm because that's premature optimization eg http stackoverflow.com questions 2190275 help sorting an nsarray across two properties with nssortdescriptor..

Catching error: Corrupt JPEG data: premature end of data segment

http://stackoverflow.com/questions/3848280/catching-error-corrupt-jpeg-data-premature-end-of-data-segment

error Corrupt JPEG data premature end of data segment When creating an UIImage with corrupt incomplete JPEG data the console will print out Error Corrupt.. segment When creating an UIImage with corrupt incomplete JPEG data the console will print out Error Corrupt JPEG data premature end of data segment The incomplete image will be shown with grey filling up the incomplete part. I do not want this to happen...

How to get errors/warnings in [UIImage initWithData:]

http://stackoverflow.com/questions/6788138/how-to-get-errors-warnings-in-uiimage-initwithdata

the time this works good but sometimes i get corrupt images and log messages like ImageIO ERROR JPEGCorrupt JPEG data premature end of data segment My Question is how can i see during runtime that such message occurs Unfortunatly 'initWithData' has.. share improve this question There is a similar thread to this one on stack overflow Catching error Corrupt JPEG data premature end of data segment . There solution is to check for the header bytes FF D8 and ending bytes FF D9 . So if you have image..

Convert UIWebview contents to a UIImage

http://stackoverflow.com/questions/858788/convert-uiwebview-contents-to-a-uiimage

UIWebView is a little heavy and although I haven't attempted it yet I am planning for the worst. I don't think this is premature optimization I 'm almost positive this will be an issue To get around the problem I figured I could convert the contents..

Cost of message dispatch in Objective-C

http://stackoverflow.com/questions/907843/cost-of-message-dispatch-in-objective-c

in Objective C in various situations. Particularly I want to guide my choice of program design so I'm not tempted to prematurely optimize by avoiding message dispatches when they would make for a better design. A case in my current project is that.. The speed is comparable to C virtual method calls although not quite as fast. Avoiding message passing is definitely premature optimization. You might not want to do a lot of it in an inner loop but the algorithms you choose and other factors will..