I wrote some JavaScript that didn’t work. It looked something like this: var x = 1; function f() { let x = x; // Something that modifies x }; f(); Executing that results in an error. But why? Variable shadowing I assume you are at least somewhat familiar with how local and…

Because remembering all the steps is hard. Summary of steps Write a disk image to the SD card Add wifi credentials and enable ssh Change the Pi’s hostname and add ssh key(s) Reboot Verify passwordless authentication works Disable password authentication Write a disk image to the SD card. The Raspberry Pi Imager makes this super simple. I normally choose either Raspberry…

tl;dr: key presses can trigger all kinds of things: form inputs, browser scrolling, and app-specific keyboard controls, to name a few. Given this, writing code to handle key presses might be more complicated than you think. I built a tetris game. Its source is on GitHub. It’s built using React…