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Difference between numpy.array shape (R, 1) and (R,)
In numpy , some of the operations return in shape (R, 1) but some return (R,) . This will make matrix multiplication more tedious since explicit reshape is required. For example, given a matrix M , if we want to do numpy.dot(M[:,0], numpy.ones((1, R))) where R is the number of rows (of co...
How to convert floats to human-readable fractions?
Let's say we have 0.33 , we need to output 1/3 .
If we have 0.4 , we need to output 2/5 .
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How to fix the uninitialized constant Rake::DSL problem on Heroku?
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answered Jun 7 '11 at 9:31
KaleKale
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RegEx to parse or validate Base64 data
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From the RFC 4648:
Base encoding of data is used in many situations to store or transfer d...
Python and pip, list all versions of a package that's available?
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Syntax for creating a two-dimensional array
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How to extract numbers from a string and get an array of ints?
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pandas DataFrame: replace nan values with average of columns
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