Advent of Functional PHP: Day 5
Advent of Functional PHP: Day 5
After the last two days, Day 5 of Advent of Code is almost mundane in comparison. Today we're asked to read in the definition for a series of lines and compute how many times they intersect.
The process is much the same as the previous days: Parse the incoming data into some sort of data model, then run some computations on it. And both parts will consist primarily of `pipe()` operations, since we're really just shuffling data from one form to another.
Our input data looks like this (albeit with a much larger range of coordinates):
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