[Haskell-cafe] Reader monad, implicit parameters, or something else altogether?

Brandon S. Allbery KF8NH allbery at ece.cmu.edu
Mon Aug 18 17:36:43 EDT 2008

On 2008 Aug 18, at 17:09, Evan Laforge wrote:

>>> They also seem to be removed from ghc:
>>> http://www.haskell.org/pipermail/cvs-ghc/2006-September/031824.html
>> Again, that's *linear* implicit parameters (%foo instead of ?foo).
> Oh, you're right.  I made exactly the same mistake you made, and right
> after you warned against making it too.  I always thought "linear" was
> the ? stuff, but now I see it's not.  Maybe it's best that it's gone
> so we only have one flavor of "implicit parameters" feature from here
> on out.

Don't feel too bad; the main reason I'm commenting on it is I managed  
to confuse a bunch of people in public before I was set straight on  
it, so I kinda feel a bit guilty when people are confused by it.

brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH

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