Thanks. That's important because I do override a few methods. For example,
set-cell! erases pencil marks and clear-cell! puts them back in. But in most
cases the methods are not overridden.
Sent from my iPhone
On Sep 10, 2012, at 1:23 PM, Asumu Takikawa wrote:
> On 2012-09-10 12:35:52 -0700,
On 2012-09-10 12:35:52 -0700, Gregory Woodhouse wrote:
> Now, here's my question. provide grid% with its own contract-out
> clause. It seems rather redundant (and presumably unnecessary) to
> repeat the methods from base-grid% in the contract for grid%.
You don't need to repeat the contracts unles
I have a contract
(define base-grid/c
(class/c
(given? (->m coord? coord? boolean?))
(get-cell (->m coord? coord? digit?))
(get-cell/given (->m coord? coord? (values digit? boolean?)))
(set-cell! (->m coord? coord? digit? void?))
(set-given! (->m coord? coord? digit? void?))
(c
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