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142 votes

How dangerous is it to compare floating point values?

objective-c ios c floating-point floating-accuracy asked Apr 26 '12 at 13:41
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78 votes

Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?

iphone objective-c ios singleton automatic-ref-counting asked Feb 2 '12 at 19:56
stackoverflow.com

40 votes

How to build a framework or library for other developers, the secure way?

iphone ipad frameworks ios asked Oct 31 '10 at 20:52
stackoverflow.com

36 votes

In which situations do we need to write the __autoreleasing ownership qualifier under ARC?

objective-c ios memory-management automatic-ref-counting asked Jan 14 '12 at 11:52
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25 votes

Did the Target-Action design pattern became bad practice under ARC?

objective-c ios xcode memory-management automatic-ref-counting asked Jan 13 '12 at 18:35
stackoverflow.com

17 votes

Why is NSNumber immutable?

objective-c nsnumber asked Apr 28 '11 at 13:28
stackoverflow.com

16 votes

How to download Xcode 4.3/4.4/4.5 and get the DMG file?

ios xcode xcode4 osx-lion mac-app-store asked Apr 26 '12 at 14:41
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15 votes

Why should I prefer ASIHTTPRequest over NSURLConnection for downloading files from the web?

iphone ios ipad nsurlconnection asihttprequest asked May 26 '11 at 18:15
stackoverflow.com

12 votes

How to write a BOOL predicate in Core Data?

iphone ios ipad core-data predicate asked May 29 '11 at 17:08
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10 votes

When exactly do implicit animations take place in iOS?

ios core-animation asked Jan 20 '11 at 15:56
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