[racket] REPL @ Runtime Contract Modification?

From: Sean Kanaley (skanaley at gmail.com)
Date: Thu Jun 27 10:53:11 EDT 2013

All of Racket seems to be available while debugging GUIs.  I can query 
state and launch new error-free dialogs while the GUI sits there with 
its broken dialog.  I was thinking then that there might be some way to 
change the associated contract of the offending function while the GUI 
patiently waits for its next event.

Also it was type [A]...I made the mistake of calling the range of a 
function like "member" "boolean?".

The goal is to enter:

(set-contract! <function> (-> ... (listof symbol?))

and carry on.

On 06/27/2013 10:32 AM, Matthias Felleisen wrote:
> I am not sure what you're asking.
> -- Once your program has raised a contract error and your program didn't handle it, you're stuck.
> -- Did the contract error suggest
>   [A] you formulated the wrong contract (the program is working but the contract is too stringent)
>   [B] you program has a bug
> Before you restart try to figure out which one is which and fix something.
> On Jun 27, 2013, at 12:35 AM, Sean Kanaley <skanaley at gmail.com> wrote:
>> Hello,
>> I'm debugging a heavily stateful GUI app that has reached a very specific state but has come across a contract error.  Is there some way to modify the contract and proceed or I must I reevaluate and run the gui and attempt to duplicate the state?
>> ____________________
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