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Pan & Zoom Image

...form. private void image_MouseMove(object sender, MouseEventArgs e) { if (image.IsMouseCaptured) { var tt = (TranslateTransform)((TransformGroup)image.RenderTransform) .Children.First(tr => tr is TranslateTransform); Vector v = start - e.GetPosition(border); ...
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What does send() do in Ruby?

...s, so that you can call private methods, too (useful for unit testing). If there is really no variable before send, that means that the global Object is used: send :to_s # "main" send :class # Object share ...
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Deleting an object in java?

...ventually). Example 1: Object a = new Object(); a = null; // after this, if there is no reference to the object, // it will be deleted by the garbage collector Example 2: if (something) { Object o = new Object(); } // as you leave the block, the reference is deleted. // Later o...
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Remove an onclick listener

... i wonder if listeners cause memory allocation ? Do we need to free them ? Will that raise performance of app ? – alicanbatur Nov 4 '13 at 11:42 ...
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WebSockets vs. Server-Sent events/EventSource

...ta to browsers. To me they seem to be competing technologies. What is the difference between them? When would you choose one over the other? ...
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Returning anonymous type in C#

... @frenchie: Yes, only inside member's body. If you want to return it - make it a well-known type. – abatishchev Apr 9 '12 at 12:45 11 ...
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How do I abort the execution of a Python script? [duplicate]

I have a simple Python script that I want to stop executing if a condition is met. 8 Answers ...
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Bootstrap Dropdown menu is not working

...tdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css"> and see if it will work. share | improve this answer | follow | ...
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Making a request to a RESTful API using python

...optional "params" parameter which is usually a dict carrying query string. If a payload is necessary to fetch data (such as the example posted in question), then "requests.post" needs to be used. Additionally using "json" library makes it easier to parse json response. – HVS ...
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How to import CSV file data into a PostgreSQL table?

... actually use \copy would do the same trick if you do not have the super user access; it complaints on my Fedora 16 when using COPY with a non-root account. – asksw0rder Oct 15 '12 at 17:07 ...