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How to calculate number of days between two given dates?

If I have two dates (ex. '8/18/2008' and '9/26/2008' ), what is the best way to get the number of days between these two dates? ...
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Check if an element is a child of a parent

... If you are only interested in the direct parent, and not other ancestors, you can just use parent(), and give it the selector, as in target.parent('div#hello'). Example: http://jsfiddle.net/6BX9n/ function fun(evt) { var target = $(evt.target); if (target.pare...
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How can I ignore a property when serializing using the DataContractSerializer?

I am using .NET 3.5SP1 and DataContractSerializer to serialize a class. In SP1, they changed the behavior so that you don't have to include DataContract / DataMember attributes on the class and it will just serialize the entire thing. This is the behavior I am using, but now I need to ignore o...
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Reducing MongoDB database file size

...tabase that was once large (>3GB). Since then, documents have been deleted and I was expecting the size of the database files to decrease accordingly. ...
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Groovy Shell warning “Could not open/create prefs root node …”

I tried to open the Groovy Shell ( groovysh ) on Windows 8 and got the following output: 9 Answers ...
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Callback functions in Java

... @Omar, agreed. I've come back to Java after a long stint with C# and really miss lambdas/delegates. Come on Java! – Drew Noakes May 2 '11 at 14:56 4 ...
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Add a “hook” to all AJAX requests on a page

...every single AJAX request (either as it's about to get sent, or on events) and perform an action. At this point I'm assuming that there are other third-party scripts on the page. Some of these might use jQuery, while others do not. Is this possible? ...
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Is module __file__ attribute absolute or relative?

I'm having trouble understanding __file__ . From what I understand, __file__ returns the absolute path from which the module was loaded. ...
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Convert Decimal to Double

...in VB.NET because it implicitly does any casts, while C# has both implicit and explicit ones. In C# the conversion from decimal to double is explicit as you lose accuracy. For instance 1.1 can't be accurately expressed as a double, but can as a decimal (see "Floating point numbers - more inaccurate...
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Web API Routing - api/{controller}/{action}/{id} “dysfunctions” api/{controller}/{id}

...it. Once it gets the first matched rule, it will stop checking other rules and take this to search for controller and action. So, you should: Put your specific rules ahead of your general rules(like default), which means use RouteTable.Routes.MapHttpRoute to map "WithActionApi" first, then "Def...