Re: paul grahams arc, a new lisp, and his words about makign code

On Apr 23, 12:44=A0pm, John Passaniti <n...@[EMAIL PROTECTED]
> wrote:
> Jonah Thomas wrote:
> > Rotation angle and distance? You can't just tell the turtle to move
from=

> > where it is to some particular spot? That does not sound like a very
> > good turtle to me.
>
> No, you can't just say move to a X/Y point:
>
> http://en.wikipedia.org/wiki/Turtle_graphics
>
> Read the overview and understand what the phrase "turtle graphics"
> means. =A0Turtle graphics is by definition about a system that describes
> motion by relative displacements. =A0This is not a term I invented.
=A0It'=
s
> existed since the late 60's.

The most famous purveyor of turtle graphics, Logo, quickly added a
"setxy" command after moving from physical turtle robots (which aren't
kangaroos, after all) to computer graphics. Logo didn't unduly limit
itself to the physical turtle abstraction when it entered a different
environment.

Ian