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Platy platy/fren :!platywave: Hello friend! :!marseysheepdog:  2yr ago (image post) 747 thread views #128097

Advent of Code Solutions Thread: Day Two

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Only shitty solutions allowed

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The shitty version, managed to knock it down to half this length afterward by actually using modulo and just passing numbers around instead of characters.

Also, which one of y'all is #986674?

class Day02:
	def _score(self, a, b):
		la = ['A', 'B', 'C']
		lb = ['X', 'Y', 'Z']
		ia = la.index(a)
		ib = lb.index(b)

		score = (ib + 1) 

		if ia == ib:
			score += 3
		elif ((a == 'A' and b == 'Y')
				or (a == 'B' and b == 'Z')
				or (a == 'C' and b == 'X')):
			score += 6

		return score
	def run_a(self, data):
		acc = 0
		for l in data:
			acc += self._score(l[0], l[2])
		return acc
	def run_b(self, data):
		la = ['A', 'B', 'C']
		lb = ['X', 'Y', 'Z']
		acc = 0
		for l in data:
			x, y = l[0], l[2]
			ix = la.index(x)
			if y == 'Y':
				s = lb[ix]
			elif y == 'Z':
				s = lb[(ix + 1) % 3]
			elif y == 'X':
				s = lb[ix - 1]
			acc += self._score(x, s)
		return acc
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too much nesting, make subfunctions :marseyautism:

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um function calls are pure overhead actually, you're just wasting cycles

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the rdrama :marseyoverseether: dot net code :marseycodecellove: philosophy :marseynietzsche:

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My favorite part is it's not even true in native Python, it's just as slow as anything else but people still try their hardest

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it used to be a pretty :marseyglam: bad pain :marseydomesticabuse: point :marseyhesklennyyouknow: of python :marseycodecel: but they've actually :marseyakshually: apparently done :marseyclapping: some stuff to make :marseyyarn: function calls not terribly onerous in pyland

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true in the context in python, but in any other decent, less dynamic language function calls are inlined aggressively.

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The actual program being run is the interpreter kernel so there's not even a real processor-level function call, in python it's pretty much just as slow as anything else (ignoring the instruction cache)

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That's orthogonal to what I was talking about; my point is that cpython can't even inline function calls* in its byte code due to the dynamic nature of functions as objects; you can get/set arbitrary attributes on them.

* not necessarily actual call instructions

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Wait until you see how many function pointers my C++ codebase has :soyjakanimeglasses:

kill me please dear god

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he doesn't use lambdas [auto& = std::move(x)] (int y) -> std::string mutable { x += y; return "hello world"; }

he hasn't descended into template heck where the are no classes/functions only nested templates with 5+ parameters each

he hasn't read category theory for programmers and reimplemented the haskell prelude in c++

he uses function pointers, std::function, virtual functions (non zero cost abstractions anime puke)

he uses c++, not rust

its unironically over keep yourself safe

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he hasn't descended into template heck where the are no classes/functions only nested templates with 5+ parameters each

I have templates that are templated on other templates recursively, please end me I'm not even entirely sure how they get resolved

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More comments

umm actually they should be optimized out at compile time, have you heard of rust? :marseyfemboy:

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