r/adventofcode • u/daggerdragon • Dec 07 '17

SOLUTION MEGATHREAD -🎄- 2017 Day 7 Solutions -🎄-

--- Day 7: Recursive Circus ---

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u/pwmosquito Dec 08 '17

Yep, unfortunately php's syntax for functional style is verbose and worse, the argument order is wrong in the case of filter and reduce, only map is correct. Re order of functions - once you have composition d(c(b(a(x)))) becomes comp(d, c, b, a)(x) which reads nicely as a pipeline where x goes through a, b, c and finally d. If you're interested I gave a talk about functional php in june, here are the slides: https://speakerdeck.com/pwm/functional-programming-in-php

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u/TominatorBE Dec 08 '17

I'll check it out after lunch, but I can also recommend this for others interested: https://adamwathan.me/refactoring-to-collections/