In Numpy, the r_ and c_ class objects are utilities that allow users to concatenate objects using slice notation. In this post, I explain how to make the most out of them by modifying its string notation and I measure their performance for concatenating and for reshaping.

In this post, a solution is presented to the problem of rebasing the section of a branch to a new parent commit, and making that new section a new branch on which to work.

This post shows how to re-enable command-line applications, namely the default ones in MacOS distributions, like git, and user-installed Anaconda, that would not launch or work after installing MacOS Catalina and its new default shell, zsh.