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Subject: Advent of Code, Day 17
From: John Perry <john.perry@usm.edu>
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Today we have another variant on the game of Life. I was determined to do i=
t with arrays only, but got held up trying to define the types because I wa=
s stuck in a C way of thinking about multidimensional arrays. Once I got in=
to the Ada way of thinking, things became simpler: it was really nice to ha=
ve negative array indices available!

Alas, I discovered at least one bug in gnat, which I will report.

john perry