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Filter dict to contain only certain keys?

I've got a dict that has a whole bunch of entries. I'm only interested in a select few of them. Is there an easy way to prune all the other ones out? ...
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Relatively position an element without it taking up space in document flow

How can I relatively position an element, and have it not take up space in the document flow? 6 Answers ...
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Insert ellipsis (…) into HTML tag if content too wide

I have a webpage with an elastic layout that changes its width if the browser window is resized. 24 Answers ...
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Draw on HTML5 Canvas using a mouse

I want to draw on a HTML Canvas using a mouse (for example, draw a signature, draw a name, ...) 13 Answers ...
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How to force LINQ Sum() to return 0 while source collection is empty

Basically when I do the following query, if no leads were matched the following query throws an exception. In that case I'd prefer to have the sum equalize 0 rather than an exception being thrown. Would this be possible in the query itself - I mean rather than storing the query and checking query.A...
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How do I specify multiple targets in my podfile for my Xcode project?

I'm using CocoaPods with my Xcode 4 project and I have three targets for my project (the default, one for building a lite version and one for building a demo version). All the targets use the same libraries, but CocoaPods is only adding the static library and search paths to the primary target. My p...
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List of encodings that Node.js supports

I need to read a file which is encoded with ISO-8859-1 (also called latin1), something like this: 2 Answers ...
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Why does `a == b or c or d` always evaluate to True?

I am writing a security system that denies access to unauthorized users. 3 Answers 3 ...
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How are booleans formatted in Strings in Python?

I see I can't do: 4 Answers 4 ...
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Which, if any, C++ compilers do tail-recursion optimization?

It seems to me that it would work perfectly well to do tail-recursion optimization in both C and C++, yet while debugging I never seem to see a frame stack that indicates this optimization. That is kind of good, because the stack tells me how deep the recursion is. However, the optimization would be...