# Need help finding a pithy corouting example

Discussion in 'Ruby' started by Dave Thomas, Nov 9, 2008.

1. ### Dave ThomasGuest

I'm looking for a concise but interesting example of corotuines to
illustrate symmetrical fibers for the 1.9 edition of the PickAxe.

Way back in the dim past, I remember a logic puzzle to do with laying
down a path of colored tiles such that there were no repeating
subsequences. I remember coding a solution using coroutines in Simula.
But I can't now find a formulation of the problem. Does anyone know
it? Or can anyone suggest an alternative illustration of coroutines
that will fit in about 20-30 lines.?

Thanks

Dave

Dave Thomas, Nov 9, 2008

2. ### bullockbefriending bardGuest

On Nov 9, 10:19 pm, Dave Thomas <> wrote:
> I'm looking for a concise but interesting example of corotuines to
> illustrate symmetrical fibers for the 1.9 edition of the PickAxe.
>
> Way back in the dim past, I remember a logic puzzle to do with laying
> down a path of colored tiles such that there were no repeating
> subsequences. I remember coding a solution using coroutines in Simula.
> But I can't now find a formulation of the problem. Does anyone know
> it? Or can anyone suggest an alternative illustration of coroutines
> that will fit in about 20-30 lines.?
>
> Thanks
>
> Dave

Chapter 9 - Coroutines in Programming in Lua has a few examples.

Chapter 13.4 in Teach Yourself Scheme in Fixnum days has a tree-
matching example.

Both are available in online versions.

bullockbefriending bard, Nov 9, 2008

3. ### Dave ThomasGuest

On Nov 9, 2008, at 10:27 AM, bullockbefriending bard wrote:

> Chapter 9 - Coroutines in Programming in Lua has a few examples.
>
> Chapter 13.4 in Teach Yourself Scheme in Fixnum days has a tree-
> matching example.
>
> Both are available in online versions.

I should have said: I saw those, but I was looking for something a
little more fun

Dave Thomas, Nov 9, 2008