Cookbook/Compilers and interpreters: Difference between revisions

Latest revision as of 08:33, 25 January 2010

Problem	Solution	Examples
compiling and linking an executable	--make	ghc --make Main.hs --> Main
compiling without linking	-c	ghc -c Foo.hs --> Foo.hi, Foo.o
generating Assembler code	-S	ghc -S Foo.hs --> Foo.hi, Foo.s
generating C code	-C	ghc -C Foo.hs --> Foo.hc, Foo.hi
linking files into an executable	-o	ghc -o test Foo.o Bar.o Baz.p --> test

Problem	Solution	Examples
checking a definition	:i	Prelude> :i True data Bool = ... \| True -- Defined in GHC.Bool
checking a type	:t	Prelude> :t "Hello" "Hello" :: [Char] Prelude> :t length length :: [a] -> Int
loading a file	:l	Prelude> :l Foo.hs [1 of 1] Compiling Foo ( Foo.hs, interpreted ) Ok, modules loaded: Foo.
reloading all loaded files	:r	Prelude> :r

Problem	Solution	Examples
setting a break point	:break	Prelude> :break 2 -- sets a break point in line 2

TODO

@@ Line 41: / Line 41: @@
 |  :i
 |<haskell>
-Prelude> :i Monad
+Prelude> :i True
-class Monad m where
+data Bool = ... | True  -- Defined in GHC.Bool
-  (>>=) :: 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
 </haskell>
 |-