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Performance of FOR vs FOREACH in PHP

First of all, I understand in 90% of applications the performance difference is completely irrelevant, but I just need to know which is the faster construct. That and... ...
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How to read keyboard-input?

...f you use Python 2 input('Enter your input:') # If you use Python 3 and if you want to have a numeric value just convert it: try: mode=int(raw_input('Input:')) except ValueError: print "Not a number" share...
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CSS display:table-row does not expand when width is set to 100%

I'm having a bit of a problem. I'm using FireFox 3.6 and have the following DOM structure: 5 Answers ...
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Proper practice for subclassing UIView?

I'm working on some custom UIView-based input controls, and I'm trying to ascertain proper practice for setting up the view. When working with a UIViewController, it's fairly simple to use the loadView and related viewWill , viewDid methods, but when subclassing a UIView, the closest methosds I...
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How to configure MongoDB Java driver MongoOptions for production use?

...or best practices for configuring MongoOptions for the MongoDB Java driver and I haven't come up with much other than the API. This search started after I ran into the "com.mongodb.DBPortPool$SemaphoresOut: Out of semaphores to get db connection" error and by increasing the connections/multiplier I...
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What are Vertex Array Objects?

...://openglbook.com/the-book/ I got to chapter 2, where I draw a triangle, and I understand everything except VAOs (is this acronym OK?). The tutorial has this code: ...
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Reading output of a command into an array in Bash

I need to read the output of a command in my script into an array. The command is, for example: 3 Answers ...
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Change date of git tag (or GitHub Release based on it)

...Go back in time to the commit representing the tag Delete the tag (locally and remotely) This will turn your "Release" on GitHub into a Draft that you can later delete. Re-add the same-named tag using a magic invocation that sets its date to the date of the commit. Push the new tags with fixed da...
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what exactly is device pixel ratio?

... Short answer The device pixel ratio is the ratio between physical pixels and logical pixels. For instance, the iPhone 4 and iPhone 4S report a device pixel ratio of 2, because the physical linear resolution is double the logical linear resolution. Physical resolution: 960 x 640 Logical resolutio...
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Is there YAML syntax for sharing part of a list or map?

...sequences as your first example. This makes sense when you think about it, and your example looks like it probably doesn't need to be sequential anyway. Simply changing your sequence values to mapping keys should do the trick, as in the following (untested) example: sitelist: &sites ? www.foo...