TWIL ~ This week I learned"

AoC day 10:

Day 10 of 2023 led me to discover two new tools/algorithms for working with polygons. Pick’s theorem to count integer points inside polygon. Shoelace formula to calculate area of polygon.

Joining sets

which I always forget!

# Quick Examples

# Join using |
myset = myset1 | myset2 | myset3

# Join using union()
myset = myset1.union(myset2,myset3)

# Join using + operator
myset = set(list(myset1) + list(myset2))

# Join using update()
myset.update(myset1,myset2)

Linux snippets

What process is running on PORT

netstat -nlp | grep PORT

Getting information about process based on PID

ps -Flww -p PID

Sorting human readable sizes

du -hd1 . | sort -h