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Date: Mon, 14 Dec 2020 09:43:05 -0800 (PST)
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Subject: Re: Advent of Code
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On Wednesday, December 2, 2020 at 11:59:23 PM UTC+1, Stephen Leake wrote:
> On these small files, can you really tell the difference in speed 
> between GNAT and HAC? or (insert other favorite editor, mine is Emacs) 
> and LEA? for me, everything is instantaneous.

>From GNAT Studio I get a range of 1.5 sec (an i5 PC @2.9 GHz) to 9 sec (a lightweight laptop)
for building aoc_2020_12.adb (almost a benchmark for easy puzzles ;-) ).
On the same source, I run hac -v2 aoc_2020_12.adb:
Compilation finished in  0.000335500 seconds.
Part 1: Manhattan distance of the ship to (0,0): 1631  (1631.0)
Part 2: Manhattan distance of the ship to (0,0): 58606  (58606.0)
VM interpreter done after  0.008894500 seconds.

So, for this kind of puzzle, it makes a difference (correct solution to part 1 was sent at 00:11:01).
But agreed, it's quite rare.
Especially on today's puzzle, I didn't even consider using HAC...