rauschma

Cheat sheet: JavaScript Array methods

Deriving a new Array from an existing Array:

['■','●','▲'].slice(1, 3)          ⟼ ['●','▲']
['■','●','■'].filter(x => x==='■') ⟼ ['■','■']
    ['▲','●'].map(x => x+x)        ⟼ ['▲▲','●●']
    ['▲','●'].flatMap(x => [x,x])  ⟼ ['▲','▲','●','●']

superdodd

1. Download the Raspbian Lite image from https://downloads.raspberrypi.org/raspbian_lite_latest (add .torrent to get a torrent)
2. Unzip the download to extract the .img file
3. Insert a FAT32-formatted SD card, and copy the image over:
   • diskutil list to identify the disk number, e.g. /dev/disk2
   • diskutil unmountDisk /dev/disk2
   • sudo dd bs=1m if=image.img of=/dev/rdisk2
4. Before unmounting, edit a couple of files to activate internet-over-USB. The image mounted for me at /Volumes/boot.
   • In config.txt, add this as the last line of the file: dtoverlay=dwc2
   • In cmdline.txt, add this as a parameter, just after the rootwait parameter: modules-load=dwc2,g_ether
5. Unmount the SD card (via Finder) and stick it in the Raspberry Pi.