Re: Advent of code day 12

[Maxim Reznik <reznikmm@gmail.com>]

Take a look at Ada 2005 Rationale:
https://www.adaic.org/resources/add_content/standards/05rat/html/Rat-2-7.html

The `overriding` specification is optional only to keep backward compatibility with Ada 83/95. Usage of this keyword prevents you from errors, when you expect some function to override another from the parent type, but occasionally it doesn't. For instance, if one day you rename 'Turn' on interface type to, say, `Rotate`, without `overriding` keyword the program still compiles, but won't work as expected. So `overriding` must be :)


воскресенье, 13 декабря 2020 г. в 17:41:27 UTC+2, john....:
> On Sunday, December 13, 2020 at 12:40:35 AM UTC-6, Maxim Reznik wrote: 
> > I used interface and tagged types to make solution more interesting :) 
> > 
> > https://github.com/reznikmm/ada-howto/blob/advent-2020/md/12/12.md
> Yes, I look at all the solutions listed on your Advent of Code page at GitHub because I appreciate interesting answers, thank you. :-) 
> 
> This reminds me, though; you declare the Controls package, but in both Part_1 and Part_2 you use "overriding" only on the Move procedure, not on any other. I'm not familiar with interfaces yet; is there a reason you used that word there and nowhere else?