[plt-scheme] contracts.ss: Can you disable them at runtime?

From: Richard Cobbe (cobbe at ccs.neu.edu)
Date: Thu May 17 09:41:39 EDT 2007

On Thu, May 17, 2007 at 08:17:13AM -0400, Matthias Felleisen wrote:
>  On May 17, 2007, at 12:05 AM, Grant Rettke wrote:
> > Can you disable contracts at runtime?
>  Short: No. (I assume you mean "after deployment" because contracts are
>  inherently a run-time concept, i.e., they are what your type system can't
>  express.)
>  Long:  Tony Hoare once said that assertions are like life vests. Why use
>  them on land during practice and leave them back when you go to sea?

I've often wanted to disable them for certain modules even "during
practice."  When I'm running test cases and debugging, having to repeatedly
recompile a module with complicated structure and contract definitions is
slow enough to be very annoying and almost slow enough to be impractical.


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