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How do I make and use a Queue in Objective-C?

...ject != nil) { [[headObject retain] autorelease]; // so it isn't dealloc'ed on remove [self removeObjectAtIndex:0]; } return headObject; } // Add to the tail of the queue (no one likes it when people cut in line!) - (void) enqueue:(id)anObject { [self addObject:anObject]...
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Why and How to avoid Event Handler memory leaks?

...andler and the possible leak. However, in my experience this is rarely actually a problem - because typically I find that the publisher and subscriber have roughly equal lifetimes anyway. It is a possible cause... but in my experience it's rather over-hyped. Your mileage may vary, of course... you ...
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get NSDate today, yesterday, this Week, last Week, this Month, last Month… variables

...ve the seconds into the day if you want NSDate *today = [NSDate date]; // All intervals taken from Google NSDate *yesterday = [today dateByAddingTimeInterval: -86400.0]; NSDate *thisWeek = [today dateByAddingTimeInterval: -604800.0]; NSDate *lastWeek = [today dateByAddingTimeInterval: -1209600.0]...
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How to make a function wait until a callback has been called using node.js

...orking with event driven systems like node, your function should accept a callback parameter that will be invoked when then computation is complete. The caller should not wait for the value to be "returned" in the normal sense, but rather send the routine that will handle the resulting value: funct...
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How to remove jar file from local maven repository which was added with install:install-file?

I use above command to install local jar into maven local repo. Now I have got the dependency from maven repo. I want to remove this from local repo. How to clean it ? ...
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Get list from pandas DataFrame column headers

...input so I won't know how many columns there will be or what they will be called. 19 Answers ...
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rbenv not changing ruby version

I installed rbenv according to the github directions. I am running OSX but I have tried this on a Ubuntu 12.04 VM and got the same results. The following is what i get in my terminal when I try to change ruby versions: ...
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How to verify that a specific method was not called using Mockito?

How to verify that a method is not called on an object's dependency? 5 Answers 5 ...
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What is a build tool?

...ling,linking and packaging the code into a usable or executable form. Basically build automation is the act of scripting or automating a wide variety of tasks that software developers do in their day-to-day activities like: Downloading dependencies. Compiling source code into binary code. Packaging...
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How do cache lines work?

...hyperthreading is way better than in P4 days (so a prefetch thread is typically a waste). Also, the x86 tag wiki has lots of performance links for that architecture. share | improve this answer ...