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How do I drop a foreign key constraint only if it exists in sql server?
I can drop a table if it exists using the following code but do not know how to do the same with a constraint:
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What are the Dangers of Method Swizzling in Objective-C?
I have heard people state that method swizzling is a dangerous practice. Even the name swizzling suggests that it is a bit of a cheat.
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Why doesn't Python have multiline comments?
OK, I'm aware that triple-quotes strings can serve as multiline comments. For example,
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Rails I18n validation deprecation warning
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Nullable type as a generic parameter possible?
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How can I calculate an md5 checksum of a directory?
I need to calculate a summary md5 checksum for all files of a particular type ( *.py for example) placed under a directory and all sub-directories.
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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
I want to slice a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
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How to add a border just on the top side of a UIView
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Where do I put image files, css, js, etc. in Codeigniter?
Where is it acceptable to put css folders and image file folders? I was thinking inside the view folder? However the controller always reroutes the path to the base url so I have to specify the path in the .html file to where it sits, which is redundant.
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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?
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