Overview Tonight, I’ll only have time to go over some mapping options I’ve been looking into. Mapping Library/API’s I think this stackshare comparision summarizes the confusion of mapping well. It compares three options, but those options are not apples to apples: leaflet(js) mapbox openlayers Leaflet is really just a javascript library for interacting with maps. But it doesn’t ship with the actual map. That’s the responsibility of mapbox and open layers.

Overview Over the last week, I became curious about where to find the source for Javascript built-in methods such as array concat, push, pop, etc. I came across a few Stackoverflow articles, most of which were out of date. However, they did put me on the right track. This article summarizes where I ended up. Bottom to Top The first way we can go about this is to start from the depths.

Sankey Charts Sankey charts (or diagram) are a type of flow diagram to show dynamic relationships in a system. Defintely check out the flow diagram article as there are other flow diagrams similar to Sankey. Plotly has an implementation of Sankey Diagrams that seem to look the most polished, though I still wish ApexCharts implemented something better. Nothing would beat the flexibility of a D3 Sankey implementation though. Here is a drawing by Captain Sankey of the efficiency of a steam engine.

Weedwacker Steam Engine A few years ago I took apart a weedwacker (homelite?) and wanted to turn it into some functional art. I came across an article where someone built a mechanical steam engine using a checkvalve and home-made push rod. I revisited this topic a couple days ago via a google search, and found a computer-controlled steam engine which was way better. I would like to spend some more time with the google search results, but I think this nutsvolts article is gold and just beyond my level so I can learn something.

Init I think I need to start summarizing my notes whenever finishing, or if I already have the tabs open, then summarizing before. It would be useful to see the general theme of what I research and read about that day, which would allow myself and other readers to see if that day’s notes are worth getting into. Also allows them to quickly get an overview of items they can CMD-F for in the article.

Notes for December 11, 2020 I didn’t have much time to log content today, so I’ll only be covering 2 major topics: JS Numbers and Rounding MIT coursework I’d like to retake JS Numbers I need to get reacquainted with floating points and their implementation https://stackoverflow.com/questions/588004/is-floating-point-math-broken/27030789#27030789 https://stackoverflow.com/questions/1458633/how-to-deal-with-floating-point-number-precision-in-javascript I would probably focus on Javascript and maybe C to give me an idea of low-level details. I remember the good old days in school when I used Java and had a deeper understanding of types and their implementation….

Email and Spam I don’t remember what linked me here, but this is an answer page from Google about email and spam handling. An excerpt is below to see their explanation of how all 3 are necessary To minimize the chance that your messages are marked as spam, set up these authentication methods: Publish an SPF record for your domain. SPF prevents spammers from sending unauthorized messages that appear to be from your domain.