[racket-dev] (round), etc. in Typed Racket

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Sun Dec 12 19:35:28 EST 2010

On Dec 12, 2010, at 7:30 PM, Robby Findler wrote:

> On Sunday, December 12, 2010, Matthias Felleisen <matthias at ccs.neu.edu> wrote:
>> All of this discussion suggests that we start developing RacketII, a language that is a true break from Scheme. Our backward compatibility constraints are just overwhelming our knowledge of what we know is 'bad' with Racket in relation to other languages.
>> Perhaps TR is the proper place to start such a 'clean-break' movement.
> That sounds like a good thought to me, but I'd hate to have to port to
> a new language to be able to get type checking.

This particular change is a good example: You'd have to get used to the idea that Integer denotes 'exact integer'. Is this really bad? 

Then again, perhaps we should produce a brand new 

 #lang racket2 

that is a true break and develop 

 #lang typed/racket2 

in parallel. 

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