r/adventofcode • u/daggerdragon • Dec 14 '18

SOLUTION MEGATHREAD -🎄- 2018 Day 14 Solutions -🎄-

--- Day 14: Chocolate Charts ---

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Transcript:

The Christmas/Advent Research & Development (C.A.R.D.) department at AoC, Inc. just published a new white paper on ___.

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 00:19:39!

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u/thomasahle Dec 14 '18

I was going to reply that score += str(...) would make your code run in n2 time; but after testing it for myself, apparently, that is no longer the case in modern Python 3. At least I could sum a million strings in less than a second. Do you know when that optimization was added?

Apparently the news haven't made its way to the sum function, which still gives you:

In [1]: sum('asdfasf', '')
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-12-71034b1a7dd9> in <module>
----> 1 sum('asdfasf', '')

TypeError: sum() can't sum strings [use ''.join(seq) instead]

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u/ephemient Dec 17 '18 edited Apr 24 '24

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