Pierre D

Pierre D has asked 17 questions and find answers to 58 problems.

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About

...from banging assembly code in the early eighties to crunching petabytes nowadays, I love Computer Science and things that go fast.

Pierre D questions

PostgreSQL regexp with case-insensitive parts
When is ** understood by file glob()?
Is it possible to specify the pickle protocol when writing pandas to HDF5?
How to bundle many files in S3 using Spark
How to use apply to generate a data frame row by row?
SQL way to get the MD5 or SHA1 of an entire row
IPython Notebook Javascript: retrieve content from JavaScript variables
Order-invariant hash in Python
ggplot bar plot with facet-dependent order of categories

Pierre D answers

How can I generate a random value and then use the pop method to remove it?
How can I count the occurrence of all the names in the names list which have the letter 'i' as their second letter
measure distance to nearest group of points - python
How to get 80% random elements from a list?
Substring Merge on a column with special characters
Understanding the shape of a numpy.array
Use NumPy to apply a fixed palette to an image?
permantly apply style.format to a DataFrame
How to draw images visualizing numpy arrays themselves?
Taking N-samples from each group in PostgreSQL