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Error in : object of type 'closure' is not subsettable
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In general this error message means that you have tried to use indexing on a function. You ca...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
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from scipy.sparse import issparse # $scipy/sparse/csr.py
__date__ = "2011-11-17 Nov denis"
# X sparse, any cdist metric: real app ?
# centres get dense rapidly, metrics in high dim hit distance whiteout
# vs unsupervised / semi-supervised svm
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passing several arguments to FUN of lapply (and others *apply)
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If you look up the help page, one of the arguments to lapply is the mysterious .... When we lo...
How can I ensure that a division of integers is always rounded up?
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UPDATE: This question was the subject of my blog in January 2013. Thanks for the great question!
Getting integer arithmetic correct is hard. As has been demonstrated amply thus far, the moment you try to do a "clever" trick, odds are good that you've made a mistake. And when a flaw ...
Is SHA-1 secure for password storage?
Conclusion: SHA-1 is as safe as anything against preimage attacks, however it is easy to compute, which means it is easier to mount a bruteforce or dictionary attack. (The same is true for successors like SHA-256.) Depending on the circumstances, a hash function which was designed to be computation...
git rebase without changing commit timestamps
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Update June 2014: David Fraser mentions in the comments a solution also detailed in "Change ti...
Looking for a good world map generation algorithm [closed]
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12 Answers
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How do Python's any and all functions work?
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You can roughly think of any and all as series of logical or and and operators, respectively.
a...
How to access a preexisting collection with Mongoose?
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answered Nov 3 '11 at 15:21
calvinfocalvinfo
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