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When working on " The fastest sort for BrainF***" , I discovered this algorithm, which is O(N*k), where k is the maximum value in the input. It requires O(N) extra storage. The physical analogy is that you have N stacks of tokens. The height of the stack represents the value to be sorted. (Each token represents a bit). Set aside space for another N stacks. You take one token off the top of each stack that has tokens, and then add one to each stack in the new set from right to left until your hand is empty. Repeat until all original stacks are empty. Now the new set is sorted ascending left to

I have a buggy long python project that I am trying to debug. Its messy and undocumented. I am familiar with python2.7. There are no binaries in this project. The straight forward idea is to try execute it as python2.7 file.py or python3 file.py and see which works. But as I said it is already buggy at a lot of places. So none of them is working. Is there any check or method or editor that could tell me if the code was written in python2.7 or python3? Attempt to compile it. If the script uses syntax specific to a version then the compilation will fail. $ python2 -m py_compile foo.py $ python3

I am just asking whether it was possible to add an instance variable via a category. My special problem is, that I need to add an NSIndexPath property to an ASIHTTPRequest object but I don't wanna subclass the ASIHTTPRequest as a matter of principle. Do I have any kind of alternative? Thanks for your answers, Christian albertamg A category can not declare additional instance variables but since OS X 10.6 and iOS 3.1 you can work around this with associative references . You can use associative references to simulate the addition of object instance variables to an existing class. Using

I want to check which CPU architecture is the user running, is it i386 or X64 or AMD64. I want to do it in C#. I know i can try WMI or Registry. Is there any other way apart from these two? My project targets .NET 2.0! You could also try (only works if it's not manipulated): System.Environment.GetEnvironmentVariable("PROCESSOR_ARCHITECTURE") What led me here is checking for a 32 vs 64 bit OS. the highest rated answer is looking at the setting for the Current process . After not finding an answer I found the following setting. Hope this works for you. bool is64 = System.Environment