[Haskell-cafe] Comments requested: succ Java

Tom Davies tgdavies at gmail.com
Mon Sep 28 19:41:21 EDT 2009

On 29/09/2009, at 1:59 AM, Peter Verswyvelen wrote:

> That's a really shame. Any idea why?
> On Mon, Sep 28, 2009 at 3:02 PM, John A. De Goes <john at n-brain.net>  
> wrote:
> CAL is interesting, but unfortunately dead, and has no community.

I think Haskell users would miss too many of the post 98 extensions --  
overlapping instances, multi parameter type classes  and many other  

I've had a lot of enjoyment using CAL for hobby projects and learning  
about fp, while still being able leverage the Java ecosystem I am so  
familiar with (I'm in the 'libraries matter' camp, although I agree  
with Curt on the uncertain benefits of Hibernate). I believe that it's  
high enough quality to use in production as part of a Java based  
product, but, so far, I just don't have enough free time to do  
anything substantial.

I hope one day to use CAL to teach myself a bit more about types  
without getting lost in the (assumed) complexity of GHC. For instance  
I'd like to replace the CAL type system with HMF.

Note that while it is 'dead', it isn't broken or bit-rotted --  
everything still works, including the Eclipse plugin.


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