From: Tyler Prete <psyonic@...>
Date: 2006-12-05T05:37:45+09:00
Subject: Re: [QUIZ] Turtle Graphics (#104) [SOLUTION]

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Very nice.  I didn't think to use mod for the angle correction either, but
that is definitely the more elegant solution.

--Tyler Prete

On 12/4/06, Paul Lutus <nospam@nosite.zzz> wrote:
>
> Morton Goldberg wrote:
>
> / ...
>
> >        case
> >        when @heading >= 360.0
> >           @heading -= 360.0 while @heading >= 360.0
>
> @heading %= 360
>
> >        when @heading < 0.0
> >           @heading += 360.0 while @heading < 0.0
>
> @heading %= 360 # same solution
>
> In fact, now that I think about it, the entire block:
>
>   case
>   when @heading >= 360.0
>   @heading -= 360.0 while @heading >= 360.0
>   when @heading < 0.0
>   @heading += 360.0 while @heading < 0.0
>   end
>
> can be replaced with:
>
> @heading %= 360
>
> For a net improvement in execution speed and readability.
>
> I hope this doesn't come off as golfing, apparently a popular pastime
> here.
>
> --
> Paul Lutus
> http://www.arachnoid.com
>
>

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