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Today's Topics:
1. Viewing desugared classes and instances (PATRICK BROWNE)
----------------------------------------------------------------------
Message: 1
Date: Wed, 21 Feb 2018 17:15:10 +0000
From: PATRICK BROWNE <patrick.bro...@dit.ie>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: [Haskell-beginners] Viewing desugared classes and instances
Message-ID:
<cagflrkcj2eoe0inty8vtshukk8ghphhjxdpac92b8-rtkqi...@mail.gmail.com>
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In the Haskell litrature desugaring of type clases to a data type is
mentioned.
For example:
class Foo a where
quux :: a -> Int
muux :: a -> Bool
Desugared to
data FooD a = FooD -- class Foo a where
{ quuxD :: a -> Int -- quux :: a -> Int
, muuxD :: a -> Bool -- muux :: a -> Bool
}
Is there any way using core dumps to actuall view the desugring of classes,
sub-classes, and instances, in my own code?
I have tried:
ghc -c -ddump-ds Foo.hs
But I cannot understand the output.
Thanks,
Pat
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