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How do I iterate over an NSArray?

I'm looking for the standard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+. 8 Answers ...
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What's the difference between using CGFloat and float?

...easier to write code that works on both 32-bit and 64-bit without modification. However, if all you need is float precision within your own code, you can still use float if you like — it will reduce your memory footprint somewhat. Same goes for integer values. I suggest you invest the modest tim...
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Difference between objectForKey and valueForKey?

...etween objectForKey and valueForKey ? I looked both up in the documentation and they seemed the same to me. 5 Answers ...
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Does use of final keyword in Java improve the performance?

...r the method has actually been overridden, and is able to perform optimizations such as inlining on the assumption that a method hasn't been overridden - until it loads a class which overrides the method, at which point it can undo (or partially undo) those optimizations. (Of course, this is assumi...
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Correct file permissions for WordPress [closed]

...had a look over here but didn't find any details on the best file permissions. I also took a look at some of WordPress's form's questions over here too but anybody that suggests 777 obviously needs a little lesson in security. ...
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What are fixtures in programming?

...m many times (in the context of programming) but couldn't find any explanation of what it meant. Any good articles or explanations? ...
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Running a Haskell program on the Android OS

Forenote: This is an extension of the thread started on /r/haskell 6 Answers 6 ...
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How can I use Autolayout to set constraints on my UIScrollview?

I have spent two days trying out the various solutions for Mixed and Pure Autolayout approaches to achieve what was a trivial scrollview setup prior to autolayout, and it's now official - I must be too stupid. I am setting this up mostly in Storyboard (well, it's just the way it is). ...
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Behaviour for significant change location API when terminated/suspended?

This is the section from the CLLocationManager documentation describing the app behavior with startMonitoringSignificantLocationChanges : ...
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Why call git branch --unset-upstream to fixup?

I'm more of a novice when it comes to advanced operations in git. I maintain my blog using the blogging framework Octopress . Though Octopress is not under any development since 2011, it serves my purpose well and so I haven't thought of changing anything so far. ...