I spent the whole afternoon for this very easy to fix problem. I needed to install the proprietary NVidia driver instead of the open-source one (because Unreal Engine 4 and because DaVinci Resolve,...

[UPDATE February 26 2021: This webcam didn’t fare so well after all. I switched to a Logitech C920 after three months due to unacceptable random disconnects.] So… I bought a Chinese webcam. And ...

When using SSH to authenticate to a remote machine, password authentication can and should be replaced with SSH key pairs. To generate your public and private SSH key, run: $ ssh-keygen -t rsa En...

The problem In the previous post on parallelism in Python, we have seen how an external Python script performing a long computation can be ran in parallel using Python’s multiprocessing module. If...

The problem Suppose you have a Python script worker.py performing some long computation. Also suppose you need to perform these computations several times for different input data. If all the comp...

Here we discuss how to rotate a number to the left by k positions, using bit precision. (In a previous post we’ve seen the same problem, but the rotation involved byte precision.) What does that e...

Here we discuss how to clear the first k most significant bits (MSB) in an integer. This is a more intuitive variation of the clear MSB up to a given position problem that we have seen earlier. Wh...

Here we discuss how to determine whether a given number is a power of 2. As we know, a number is a power of 2 if it has only one of its bits set to 1. Such numbers have a very interesting property...

Here we discuss how to insert a number m into a number n between positions i and j. Let us see an example to better visualize what this means. Suppose we have the number n = 1040 and that we want ...

Here we discuss how to rotate a number to the left by k positions, using byte precision. (In a following post we’ll see the same problem when bit precision is used.) What does that even mean? We w...