[Haskell-cafe] haskell2010 and state question.
Brandon S Allbery KF8NH
allbery at ece.cmu.edu
Sun Dec 12 02:22:58 CET 2010
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On 12/9/10 20:40 , Magicloud Magiclouds wrote:
> First to notice that. So standard-wise, there is no way to do state thing?
There seems to be a lot of confusion as to what the language standard
covers. It is a bare minimum; practical libraries are not part of its
purview, but only the minimum needed to make implementing practical
This includes some baked-in assumptions: for example, the "do" construct
requires that the Monad typeclass support a "fail" method, numeric literals
require the Num typeclass to support a "fromIntegral" method, etc., and
since you can't extend typeclasses after definition that means Num and Monad
are overspecified compared to other types in the language standard.
Take a look at the Haskell Platform for a practical compiler-and-libraries
brandon s. allbery [linux,solaris,freebsd,perl] 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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