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What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?

I can take a guess based on the names, but what specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX? ...
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Selenium WebDriver: Wait for complex page with JavaScript to load

... If anyone actually knew a general and always-applicable answer, it would have been implemented everywhere ages ago and would make our lives SO much easier. There are many things you can do, but every single one of them has a problem: As...
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How to play with Control.Monad.Writer in haskell?

... <- logNumber 5; return (a*b) } :: Writer [String] Int (Input actually entered all on one line). Here I've specified the type of multWithLog to be Writer [String] Int. Now I can run it: ghci> runWriter multWithLog (15, ["Got number: 3","Got number: 5"]) And you see that we log all of ...
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What's the main difference between int.Parse() and Convert.ToInt32

...u'd use Int32.Parse(). If you're collecting input from a user, you'd generally use Int32.TryParse(), since it allows you more fine-grained control over the situation when the user enters invalid input. Convert.ToInt32() takes an object as its argument. (See Chris S's answer for how it works) Conv...
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How to configure socket connect timeout

... Another thing too look out for... If instead of putting null in for the callback and you plan to EndConnect(), if the socket has been closed then this will give you an exception. So make sure you check... – poy Jan 28 '13 at 16:50 ...
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How to iterate over the keys and values with ng-repeat in AngularJS?

... a core team member regret ever implementing the ability to do so! It's usually better to transform the object in the controller to an array; this makes the intent clearer and decreases the risk for strange/unpredictable behavior in certain cases. And you can sort in the usual way. :-) ...
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How to write lists inside a markdown table?

... @TreborRude No, because Markdown is not HTML actually. But if you use a library (e.g. marked), you probably have this feature (to combine HTML with markdown). – Ionică Bizău Aug 5 '14 at 12:59 ...
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Scala list concatenation, ::: vs ++

...matic Scala 2.10 has :+ and +: object extractors. – 0__ Jan 18 '13 at 9:25  |  show 6 more comments ...
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Android studio: new project vs new module

... oO is a module really that much?! – Martin Pfeffer Oct 30 '15 at 3:41 1 ...
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What is “entropy and information gain”?

...: female | | ends-vowel=0: male length>=7 | length=5: male basically each node represent a test performed on a single attribute, and we go left or right depending on the result of the test. We keep traversing the tree until we reach a leaf node which contains the class prediction (m or f)...