lokedhs

∇ solvePart1 {
    ⍝ Construct a 2-column array with the first column being the command
    ⍝ and the second being the distance.
    list ← ⊃ {(d n) ← ⍵ ⊂⍨ ⍵≠↑" " ◊ d (⍎n)}¨ io:read "/home/elias/prog/advent-of-code2021/part02.txt"

    ⍝ Convert each direction instruction into a vector (up, down or right)
    directions ← { ⊃ ((0 1) (¯1 0) (1 0))[(⊂¨ "forward" "up" "down") ⍳ ⊂⍵] }¨ list[;0]

    ⍝ Multiply each direction with the distance and sum the results
    ⍝ and finally multiply the individual values

danielcristofani

[life.b -- John Horton Conway's Game of Life
(c) 2021 Daniel B. Cristofani
http://brainfuck.org/]

>>>->+>+++++>(++++++++++)[[>>>+<<<-]>+++++>+>>+[<<+>>>>>+<<<-]<-]>>>>[
  [>>>+>+<<<<-]+++>>+[<+>>>+>+<<<-]>>[>[[>>>+<<<-]<]<<++>+>>>>>>-]<-
]+++>+>[[-]<+<[>+++++++++++++++++<-]<+]>>[
  [+++++++++brainfuck.org-------->>>]+[-<<<]>>>[>>,----------[>]<]<<[
    <<<[
      >--[<->>+>-<<-]<[[>>>]+>-[+>>+>-]+[<<<]<-]>++>[<+>-]

timvisee

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

• There are always 24 hours in a day.
• February is always 28 days long.
• Any 24-hour period will always begin and end in the same day (or week, or month).

pckv

--[[ LICENSE

The MIT License (MIT)

Copyright (c) 2016 PC

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell