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`from … import` vs `import .` [duplicate]

... use os.open without destroying the # built in open() which returns file handles. share | improve this answer | follow | ...
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Task not serializable: java.io.NotSerializableException when calling function outside closure only o

...sk to fail. Now this doesn't mean that you can serialise an RDD with Spark and avoid NotSerializableException Spark is a distributed computing engine and its main abstraction is a resilient distributed dataset (RDD), which can be viewed as a distributed collection. Basically, RDD's elements are par...
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Is it a bad practice to use an if-statement without curly braces? [closed]

... The problem with the first version is that if you go back and add a second statement to the if or else clauses without remembering to add the curly braces, your code will break in unexpected and amusing ways. Maintainability-wise, it's always smarter to use the second form. EDIT: ...
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Detect a finger swipe through JavaScript on the iPhone and Android

... Simple vanilla JS code sample: document.addEventListener('touchstart', handleTouchStart, false); document.addEventListener('touchmove', handleTouchMove, false); var xDown = null; var yDown = null; function getTouches(evt) { retur...
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What is a StackOverflowError?

What is a StackOverflowError , what causes it, and how should I deal with them? 15 Answers ...
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Singletons vs. Application Context in Android?

Recalling this post enumerating several problems of using singletons and having seen several examples of Android applications using singleton pattern, I wonder if it's a good idea to use Singletons instead of single instances shared through global application state (subclassing android.os.Applicat...
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Difference between Activity and FragmentActivity

I was working on fragments and came across two things Activity and FragmentActivity which are used several times. I want to know that is there any difference between these two, because when I changed Activity with FragmentActivity , it had no effect on the app. ...
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difference between foldLeft and reduceLeft in Scala

I have learned the basic difference between foldLeft and reduceLeft 7 Answers 7 ...
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process.waitFor() never returns

...esn't return. But it usually boils down to the fact that the executed command doesn't quit. This, again, can have many reasons. One common reason is that the process produces some output and you don't read from the appropriate streams. This means that the process is blocked as soon as the buffer ...
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Centering controls within a form in .NET (Winforms)? [duplicate]

... bottom left, then the control will keep the same distance from the bottom and left sides of the form when the form if resized. Turning off the anchor in a direction will keep the control centered in that direction when resizing. NOTE: Turning off anchoring via the properties window in VS2015 may...