X-Git-Url: http://git.tomasm.cz/fp.git/blobdiff_plain/f9d54d61f2feba3f37c9e7c5f4ab87bf7b3e6166..afc027ed2ff6fdf1aba286c4b6501ee240e36183:/src/HM/Term.hs

diff --git a/src/HM/Term.hs b/src/HM/Term.hs
index 0a686f9..cf4cf36 100644
--- a/src/HM/Term.hs
+++ b/src/HM/Term.hs
@@ -23,8 +23,8 @@ type VarName = String
 type TypeVarName = String
 type TypeName = String
 
-data Type = Primitive TypeName | TypeVar TypeVarName | TypeFunction Type Type 
-data TypeScheme = TScheme Type | TSForAll TypeVarName TypeScheme
+data Type = Primitive TypeName | TypeVar TypeVarName | TypeFunction Type Type deriving (Eq)
+data TypeScheme = TScheme Type | TSForAll TypeVarName TypeScheme deriving (Eq)
 
 data Term = Var VarName | Lam VarName TypedTerm | App TypedTerm TypedTerm | Let VarName TypedTerm TypedTerm
 data TypedTerm = NTTerm Term | TTerm Term TypeScheme