GHC/Error messages
From HaskellWiki
< GHC(Difference between revisions)
m (→"Foo' is not a (visible) method of class `Bar'") |
m |
||
| (One intermediate revision not shown.) | |||
| Line 1: | Line 1: | ||
GHC error messages and their meaning. | GHC error messages and their meaning. | ||
| - | == "foo' is not a (visible) method of class `Bar'" == | + | == "`foo' is not applied to enough type arguments" == |
| + | |||
| + | TODO | ||
| + | |||
| + | Example: TODO | ||
| + | |||
| + | == "`foo' is not a (visible) method of class `Bar'" == | ||
This error message occurs when one tries to instantiate a class, but did not import the functions one tries to implement. | This error message occurs when one tries to instantiate a class, but did not import the functions one tries to implement. | ||
Current revision
GHC error messages and their meaning.
Contents |
1 "`foo' is not applied to enough type arguments"
TODO
Example: TODO
2 "`foo' is not a (visible) method of class `Bar'"
This error message occurs when one tries to instantiate a class, but did not import the functions one tries to implement.
Example:
import Prelude hiding ((==)) data Foo = Foo instance Eq Foo where (==) a b = True
3 "Cannot match a monotype with `Foo'"
See this Haskell-Cafe thread.
4 "Parse error in pattern"
TODO
Example: TODO
