Difference between revisions of "Cookbook/Compilers and interpreters"
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(→GHC) |
(→GHCi) |
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Prelude> :t length |
Prelude> :t length |
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length :: [a] -> Int |
length :: [a] -> Int |
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+ | </haskell> |
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+ | |- |
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+ | | loading a file |
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+ | | :l |
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+ | |<haskell> |
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+ | Prelude> :l Foo.hs |
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+ | [1 of 1] Compiling Foo ( Foo.hs, interpreted ) |
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+ | Ok, modules loaded: Foo. |
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</haskell> |
</haskell> |
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|} |
|} |
Revision as of 08:50, 31 August 2009
GHC
Problem | Solution | Examples |
---|---|---|
compiling and linking an executable | --make | ghc -- make Main.hs --> Main
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compiling a file, without linking | -c | ghc -c Foo.hs --> Foo.hi, Foo.o
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generating Assembler code | -S | ghc -S Foo.hs --> Foo.hi, Foo.s
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generating C code | -S | ghc -C Foo.hs --> Foo.hc, Foo.hi
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linking files into an executable | -o | ghc -o test Foo.o Bar.o Baz.p --> test
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GHCi
Problem | Solution | Examples |
---|---|---|
checking a definition | :i | Prelude> :i Monad
class Monad m where
(>>=) :: m a -> (a -> m b) -> m b
(>>) :: m a -> m b -> m b
return :: a -> m a
fail :: String -> m a
-- Defined in GHC.Base
instance Monad Maybe -- Defined in Data.Maybe
instance Monad IO -- Defined in GHC.IOBase
instance Monad ((->) r) -- Defined in Control.Monad.Instances
instance Monad [] -- Defined in GHC.Base
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checking a type | :t | Prelude> :t "Hello"
"Hello" :: [Char]
Prelude> :t length
length :: [a] -> Int
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loading a file | :l | Prelude> :l Foo.hs
[1 of 1] Compiling Foo ( Foo.hs, interpreted )
Ok, modules loaded: Foo.
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Hugs
TODO