Cookbook/Compilers and interpreters
Jump to navigation
Jump to search
GHC
TODO
GHCi
| Problem | Solution | Examples |
|---|---|---|
| checking definitions | :i | Prelude> :i Maybe
data Maybe a = Nothing | Just a -- Defined in Data.Maybe
instance (Eq a) => Eq (Maybe a) -- Defined in Data.Maybe
instance Monad Maybe -- Defined in Data.Maybe
instance Functor Maybe -- Defined in Data.Maybe
instance (Ord a) => Ord (Maybe a) -- Defined in Data.Maybe
instance (Read a) => Read (Maybe a) -- Defined in GHC.Read
instance (Show a) => Show (Maybe a) -- Defined in GHC.Show
|
| checking types | :t | Prelude> :t "Hello"
"Hello" :: [Char]
|
Hugs
TODO