Newton’s method is a root-finding algorithm that can be used to find the roots of differentiable functions. It is a very simple algorithm to implement, and it converges quickly in most cases, of course depending on the function. It is often used to find the roots of polynomials. For instance, in Chemical Engineering properties calculations, often cubic equations of state are used to model the behavior of fluids. These equations of state are cubic polynomials and most solved for their roots in most cases in order to compute fluid properties and phase equilibria.
TL;DR: Use the script below to add captions from a .srt file to a Camtasia 2023 project as callouts so they can be edited and styled.
The script is available on GitHub. The Camtasia project file is just a JSON file, so this parses the captions from the .srt file and adds them to the project file as callouts.
Not intended to produce polished captions, but rather to get the captions into the project so they can be edited and styled - basically as a time saver for the initial captioning process.
TL;DR: I’m working through the Cryptopals Cryptography Challenges, starting with knowing nothing about cryptography. These are my (not so) random notes and takeaways from them. They generally seem to follow a pattern of introducing a concept in cryptography (repeating key XOR, ECB mode, CBC mode, stream ciphers, etc) and then having you break it in some way(s). I’m hoping to turn my notes on some of these in to more detailed posts at some point, but for now, this mostly ‘stream of thought’ that I’m updating as I work through them.
TL;DR: Use the functions in the random module for modeling, simulations, games, sampling, etc. but use os.urandom, secrets, or random.SystemRandom for cryptographic applications. I know very little about cryptography and security, these are just my notes about stuff I recently learned.
It uses the Mersenne Twister algorithm, which is a pseudorandom number generator with a period of 2^19937-1. It is one of the most widely used PRNGs in the world, and suitable for many applications.
TL;DR: If you’re getting a weird looking Error: fatal: fetch-pack: invalid index-pack output error checking out a large repo on a GitHub Actions using a Windows Runner, try switching to use HTTPS instead of SSH for your clones (by providing a personal access token instead of an SSH key).
Summary I was recently working on getting CI setup for a project that has a pretty large repo with a few submodules and uses LFS for some large binaries.