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How to find Unused Amazon EC2 Security groups

...ll being used you should reverse or remove the if len(sg.instances()) == 0 test and print the len(sg.instances()) value out. E.g. print ("{0}\t{1}\t{2} instances".format(sg.id, sg.name, len(sg.instances()))) share ...
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Objective-C declared @property attributes (nonatomic, copy, strong, weak)

...(more rare). If it is "real requirement" - you should either find good&tested thread safe collection component OR be prepared for trials and tribulations writing your own one. It latter case look at "lock-free", "wait-free" paradigms. Looks like rocket-science at a first glance, but could help y...
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Resizing an image in an HTML5 canvas

...produces decent results, but takes 7.4 seconds for a 1.8 MP image in the latest version of Chrome... – mpen Feb 16 '13 at 20:25 2 ...
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What are the rules about using an underscore in a C++ identifier?

...r to followed by a lowercase letter may be used for additional character testing and conversion functions. Names that begin with LC_ followed by an uppercase letter may be used for additional macros specifying locale attributes. Names of all existing mathematics functions suffixed with f or l ...
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Why would iterating over a List be faster than indexing through it?

...teration type should be used (indexed vs Iterator/foreach), you can always test if a List implements RandomAccess (a marker interface): List l = unknownList(); if (l instanceof RandomAccess) /* do indexed loop */ else /* use iterator/foreach */ – afk5min Ma...
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HTML table with fixed headers?

... The latest version doesn't work in IE6. I no longer support IE6. – Mark Oct 14 '11 at 15:45 ...
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When splitting an empty string in Python, why does split() return an empty list while split('\n') re

...ible" either. For the most part, Guido's API design choices have stood the test of time. The current API is not without advantages. Consider strings such as: ps_aux_header = "USER PID %CPU %MEM VSZ" patient_header = "name,age,height,weight" When asked to break these strings...
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Requirejs domReady plugin vs Jquery $(document).ready()?

... I was just testing out what you wrote - here you go ! – Yugal Jindle Mar 20 '13 at 7:33 ...
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Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?

... If you are using AutoLayout, then Delta is not available. Try this (tested in iPhone 4s running iOS6): - (void) viewWillLayoutSubviews { //iOS 6 workaround offset if ([[[UIDevice currentDevice] systemVersion] floatValue] < 7) { self.view.clipsToBounds = YES; CGRect screenRect = ...
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Does Haskell require a garbage collector?

... region-based/garbage-collected memory management, and reported that their test programs ran "between 10 times faster and 4 times slower" than pure garbage-collected versions. share | improve this a...