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What does the '.' (dot or period) in a Go import statement do?
...th" M.Sin
import . "lib/math" Sin
Ref: http://golang.org/doc/go_spec.html#Import_declarations
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How to perform element-wise multiplication of two lists?
...iplication, to multiply two lists together by value in Python, like we can do it in Matlab.
14 Answers
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iphone ios running in separate thread
...to iOS 4 and greater, but it's just so simple and easy to use. The code to do some processing on a background thread and then do something with the results in the main run loop is incredibly easy and compact:
dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
// A...
How to hide the “back” button in UINavigationController?
Do you know how to hide the 'back' button in a UINavigationController?
Also, how to show it back, but I guess that's very similar to hiding it...
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django import error - No module named core.management
Ok, I see plenty of these errors around. I have tried everything I know to do and have yet to figure this out.
29 Answers
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What is recursion and when should I use it?
...on mailing lists and online discussions is the merits (or lack thereof) of doing a Computer Science Degree. An argument that seems to come up time and again for the negative party is that they have been coding for some number of years and they have never used recursion.
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Animate change of view controllers without using navigation controller stack, subviews or modal cont
...ust occur with views at least a level below the first view added to the window (e.g. window.rootViewController.view.anotherView).
I've implemented a simple container class I called TransitionController. You can find it at https://gist.github.com/1394947.
As an aside, I prefer the implementation in...
When do we have to use copy constructors?
...ow that C++ compiler creates a copy constructor for a class. In which case do we have to write a user-defined copy constructor? Can you give some examples?
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How do I pass multiple attributes into an Angular.js attribute directive?
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I don't get this - how does the directive know to name the exact same thing specified in the directive usage ("exampleCallback()") in its scope? ("callback : '&exampleCallback') Shouldn't the scope be "callback : "&ex...
How do I store data in local storage using Angularjs?
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how do you use this?
– chovy
Dec 12 '13 at 5:16
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