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How can building a heap be O(n) time complexity?

...? Often, answers to these questions focus on the difference between siftUp and siftDown. Making the correct choice between siftUp and siftDown is critical to get O(n) performance for buildHeap, but does nothing to help one understand the difference between buildHeap and heapSort in general. Indeed, ...
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What is the difference between Class Path and Build Path

...s used for building your application. It contains all of your source files and all Java libraries that are required to compile the application. The classpath is used for executing the application. This includes all java classes and libraries that are needed to run the java application. A Classpath ...
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Are HTTPS headers encrypted?

...e the Host header is encrypted. †The Server Name Identification (SNI) standard means that the hostname may not be encrypted if you're using TLS. Also, whether you're using SNI or not, the TCP and IP headers are never encrypted. (If they were, your packets would not be routable.) ...
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Why use multiple columns as primary keys (composite primary key)

... Your understanding is correct. You would do this in many cases. One example is in a relationship like OrderHeader and OrderDetail. The PK in OrderHeader might be OrderNumber. The PK in OrderDetail might be OrderNumber AND LineNumber. ...
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How to prevent a background process from being stopped after closing SSH client in Linux

...ought I could do that by starting the process in background (with an ampersand at the end of the command) and redirecting stdout to a file. ...
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Pretty git branch graphs

I've seen some books and articles have some really pretty looking graphs of git branches and commits. How can I make high-quality printable images of git history? ...
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How to make a HTML Page in A4 paper size page(s)?

...m published an article on how they published a book using nothing but HTML and CSS. See: http://alistapart.com/article/boom Here's an excerpt of that article: CSS2 has a notion of paged media (think sheets of paper), as opposed to continuous media (think scrollbars). Style sheets can set the si...
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Change name of iPhone app in Xcode 4

... which is displayed below the app icon on the iPhone screen. I use Xcode 4 and I have one target with keys: 11 Answers ...
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How can I distribute python programs?

...th distutils. It's made both for distributing library type python modules, and python applications, although I don't know how it works on Windows. You would on Windows have to install Python separately if you use distutils, in any case. I'd probably recommend that you distribute it with disutils fo...
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Angular HttpPromise: difference between `success`/`error` methods and `then`'s arguments

...mment below, success() does return the original promise. I'll not change; and leave it to OP to edit. The major difference between the 2 is that .then() call returns a promise (resolved with a value returned from a callback) while .success() is more traditional way of registering callbacks and d...