I recently started to play around with Obsidian as note taking app, and am a very big fan of the large availability of community plugins and the open architecture that really allows lots of customiza…

Almost all programming languages have a special value that can be used to denote that a variable is uninitialized, not yet defined or was set in the context of a corner case. Perl calls it undef, Pyt…

If you have used JavaScript and array operations for a while, there is a good chance you wanted to filter an array for non-null values. And if you are using TypeScript, there is a chance you ended up…