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Best way to convert strings to symbols in hash
What's the (fastest/cleanest/straightforward) way to convert all keys in a hash from strings to symbols in Ruby?
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An error occurred while installing pg (0.17.1), and Bundler cannot continue
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Test if lists share any items in python
I want to check if any of the items in one list are present in another list. I can do it simply with the code below, but I suspect there might be a library function to do this. If not, is there a more pythonic method of achieving the same result.
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Ball to Ball Collision - Detection and Handling
With the help of the Stack Overflow community I've written a pretty basic-but fun physics simulator.
14 Answers
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Creating a dynamic choice field
I'm having some trouble trying to understand how to create a dynamic choice field in django. I have a model set up something like:
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Passing command line arguments to R CMD BATCH
I have been using R CMD BATCH my_script.R from a terminal to execute an R script. I am now at the point where I would like to pass an argument to the command, but am having some issues getting it working. If I do R CMD BATCH my_script.R blabla then blabla becomes the output file, rather th...
Efficient way to rotate a list in python
What is the most efficient way to rotate a list in python?
Right now I have something like this:
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Create a dictionary with list comprehension
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How do you force a CIFS connection to unmount
I have a CIFS share mounted on a Linux machine. The CIFS server is down, or the internet connection is down, and anything that touches the CIFS mount now takes several minutes to timeout, and is unkillable while you wait. I can't even run ls in my home directory because there is a symlink pointin...
Algorithm to return all combinations of k elements from n
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