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Iterator Loop vs index loop [duplicate]

I'm reviewing my knowledge on C++ and I've stumbled upon iterators. One thing I want to know is what makes them so special and I want to know why this: ...
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if (key in object) or if(object.hasOwnProperty(key)

... what do you mean exactly for in will also return true if key gets found somewhere in the prototype chain. can you write an example? thanks. – Lorraine Bernard Nov 29 '12 at 19:20 ...
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Is it acceptable and safe to run pip install under sudo?

...Mac to install Python packages in the same way I do with my Windows PC at work; however on my Mac I've come across frequent permission denied errors while writing to log files or site-packages. ...
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Making an array of integers in iOS

... You can use a plain old C array: NSInteger myIntegers[40]; for (NSInteger i = 0; i < 40; i++) myIntegers[i] = i; // to get one of them NSLog (@"The 4th integer is: %d", myIntegers[3]); Or, you can use an NSArray or NSMutableArray, but here you will need to wrap up each integ...
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How does StartCoroutine / yield return pattern really work in Unity?

I understand the principle of coroutines. I know how to get the standard StartCoroutine / yield return pattern to work in C# in Unity, e.g. invoke a method returning IEnumerator via StartCoroutine and in that method do something, do yield return new WaitForSeconds(1); to wait a second, th...
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Why are the Level.FINE logging messages not showing?

The JavaDocs for java.util.logging.Level state: 7 Answers 7 ...
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Mipmap drawables for icons

...roid 4.3 (Jelly Bean) we can now make use of the res/mipmap folders to store "mipmap" images. 11 Answers ...
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htmlentities() vs. htmlspecialchars()

...s between htmlspecialchars() and htmlentities() . When should I use one or the other? 12 Answers ...
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Get value from SimpleXMLElement Object

... then json_decode it you get a nested stdObject to deal with, quite handy for when you're being lazy & working with simple structures :D – Louis Sep 20 '13 at 6:59 ...
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What does @media screen and (max-width: 1024px) mean in CSS?

...screen — The browser identifies itself as being in the “screen” category. This roughly means the browser considers itself desktop-class — as opposed to e.g. an older mobile phone browser (note that the iPhone, and other smartphone browsers, do identify themselves as being in the screen categ...