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How to check if a python module exists without importing it
I need to know if a python module exists, without importing it.
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What is the string length of a GUID?
I want to create a varchar column in SQL that should contain N'guid' while guid is a generated GUID by .NET ( Guid.NewGuid ) - class System.Guid.
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What are the differences between ArrayList and Vector?
What are the differences between the two data structures ArrayList and Vector , and where should you use each of them?
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Difference between array_map, array_walk and array_filter
What exactly is the difference between array_map , array_walk and array_filter . What I could see from documentation is that you could pass a callback function to perform an action on the supplied array. But I don't seem to find any particular difference between them.
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CROSS JOIN vs INNER JOIN in SQL
What is the difference between CROSS JOIN and INNER JOIN ?
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Checking if a variable is an integer
Does Rails 3 or Ruby have a built-in way to check if a variable is an integer?
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Can I write into the console in a unit test? If yes, why doesn't the console window open?
I have a test project in Visual Studio. I use Microsoft.VisualStudio.TestTools.UnitTesting .
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RegEx to find two or more consecutive chars
I need to determine if a string contains two or more consecutive alpha chars. Two or more [a-zA-Z] side by side.
Example:
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Function to calculate distance between two coordinates
I'm currently using the function below and it doesn't work properly. According to Google Maps, the distance between these coordinates (from 59.3293371,13.4877472 to 59.3225525,13.4619422 ) are 2.2 kilometres while the function returns 1.6 kilometres. How can I make this function return the ...
How to redirect to a 404 in Rails?
I'd like to 'fake' a 404 page in Rails. In PHP, I would just send a header with the error code as such:
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