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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?

I have two Python dictionaries, and I want to write a single expression that returns these two dictionaries, merged (i.e. taking the union). The update() method would be what I need, if it returned its result instead of modifying a dictionary in-place. ...
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Handling warning for possible multiple enumeration of IEnumerable

In my code in need to use an IEnumerable<> several times thus get the Resharper error of "Possible multiple enumeration of IEnumerable ". ...
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Calculate number of hours between 2 dates in PHP

How do I calculate the difference between two dates in hours? 16 Answers 16 ...
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Is memcached a dinosaur in comparison to Redis? [closed]

...is. When I read this part of their readme, I suddenly got a warm, cozy feeling in my stomach: 6 Answers ...
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How to sort by two fields in Java?

I have array of objects person (int age; String name;) . 16 Answers 16 ...
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Why can't I see the “Report Data” window when creating reports?

I'm creating RDLC reports in VS10. When the program is NOT running, I can see the toolbox, and add controls to the report, but the "Report Data" pane is nowhere to be found, so I can't fill the controls on my report. However, if I run the solution, the "Report Data" pane appears, and I can drag fi...
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RootViewController Switch Transition Animation

Is there any way to have a Transition/animation effect while replacing an existing viewcontroller as rootviewcontroller with a new one in the appDelegate? ...
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How to determine the content size of a UIWebView?

I have a UIWebView with different (single page) content. I'd like to find out the CGSize of the content to resize my parent views appropriately. The obvious -sizeThatFits: unfortunately just returns the current frame size of the webView. ...
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How to determine if object is in array [duplicate]

I need to determine if an object already exists in an array in javascript. 11 Answers ...
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Using LINQ to remove elements from a List

Say that I have LINQ query such as: 14 Answers 14 ...