I've written and just published today's #perl6 #adventcalendar post!
It's about cellular automata!
It has links where you can run the code right in your browser and experiment with it!
I hope you'll like it. Please tell me what you think 
https://perl6advent.wordpress.com/2018/12/07/day-7-automatic-on-a-cellular-level/
Ever wanted a one-liner where you mutate something in between, but you wanted further methods to apply to the object rather than the mutator's return value?
I just made this operator in #perl6; I think it's quite pretty actually!
If i find a good name for it, maybe I'll put it in a module. The brackets/symbols to use are still up for debate, too. Open for suggestions :)
Source: https://gist.github.com/timo/44efb53aa136871e87b931d1656c8aa9 …
image via dawn_labs (on birdsite) #Carbon
So I've been working on this HTML web app that lets you explore/analyze the results of a #rakudo #perl6 profile made on #moarvm, and one of the features my users have loved the most is that the "Routines" list and call graph explorer has links directly to the file and line number of functions (where available).
Well, here's the next step: Link to the docs for types that are likely to have 'em!
Proud of this one! 
"drying stripes with gaps", 3417940016
it's like drying stripes, but the vertical lines have a bunch of gaps in them!
"windy decay", number 3948850248
Patterns of white pixels flying from left to right, wrapping at the sides, pulling behind them a little glitchy trail, and decaying into individual bits that slowly disappear into the black background.
This one accidentally didn't end up in the "thread" i was making, so I posted it a second time …
"drying stripes", 3149341029
This one is in bright blue on dark blue again. An initially random image quickly splits into two regions of perfectly vertical stripes, which are either bright on even or on odd columns. The border between the two is amorphous and shrinks in a manner that seems to preserve horizontal and vertical edges, but anything diagonal "shrinks" towards the area's center.