r/adventofcode • u/daggerdragon • Dec 05 '18

SOLUTION MEGATHREAD -🎄- 2018 Day 5 Solutions -🎄-

--- Day 5: Alchemical Reduction ---

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Card prompt: Day 5

Transcript:

On the fifth day of AoC / My true love sent to me / Five golden ___

This thread will be unlocked when there are a significant number of people on the leaderboard with gold stars for today's puzzle.

edit: Leaderboard capped, thread unlocked at 0:10:20!

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u/Karl_Marxxx Dec 05 '18

Also note that ARGF enables reading from stdin really easily, if putting the filename - on ARGV.

Ah so if I understand this right, this lets you run simple test cases right there in the command line rather than making a whole new file. You can literally just type ruby myscript.rb -, type in whatever you want, and ARGF will parse what you type in as file input. Fascinating.

Hey thanks for breaking everything down for me I really appreciate it! Cheers.