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One lesson I’ve learned in the past few years is that idempotent is good.
That means a switch you push and it stays pushed even if you push more.
For example, piping things through kramdown is idempotent:
echo "Eating only spiders and leaves"|kramdown|kramdown|kramdown
A li’l bit of wasted electricity but text doesn’t get borked.
Used to be I thought toggles were really practical and nifty, and steppers that looped around like a Pacman stage.
But on the Mudita Pure phone, the idempotent menus were a big problem since the screen didn’t work in the dark. I couldn’t orient myself through stepping all the way up.