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Django, creating a custom 500/404 error page

Following the tutorial found here exactly, I cannot create a custom 500 or 404 error page. If I do type in a bad url, the page gives me the default error page. Is there anything I should be checking for that would prevent a custom page from showing up? ...
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How do I select a random value from an enumeration?

Given an arbitrary enumeration in C#, how do I select a random value? 9 Answers 9 ...
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Getting indices of True values in a boolean list

I have a piece of my code where I'm supposed to create a switchboard. I want to return a list of all the switches that are on. Here "on" will equal True and "off" equal False . So now I just want to return a list of all the True values and their position. This is all I have but it only return t...
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Can lambda functions be templated?

In C++11, is there a way to template a lambda function? Or is it inherently too specific to be templated? 11 Answers ...
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Why would I make() or new()?

The introduction documents dedicate many paragraphs to explaining the difference between new() and make() , but in practice, you can create objects within local scope and return them. ...
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GitHub: searching through older versions of files

I know that using GitHub I can search through all the current versions of my files in a repo. However, I would also like to search through the older versions of my repo files. For example, say, I used to have a function called get_info() in my code, but deleted it several versions ago, is it possibl...
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converting a .net Func to a .net Expression

Going from a lambda to an Expression is easy using a method call... 9 Answers 9 ...
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How do I get the type name of a generic type argument?

If I have a method signature like 3 Answers 3 ...
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How to use int.TryParse with nullable int? [duplicate]

I am trying to use TryParse to find if the string value is an integer. If the value is an integer then skip foreach loop. Here is my code. ...
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What Automatic Resource Management alternatives exist for Scala?

I have seen many examples of ARM (automatic resource management) on the web for Scala. It seems to be a rite-of-passage to write one, though most look pretty much like one another. I did see a pretty cool example using continuations, though. ...