Difference between revisions of "Cookbook/Compilers and interpreters"
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== GHCi == |
== GHCi == |
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+ | |||
+ | === General === |
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{| class="wikitable" |
{| class="wikitable" |
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|<haskell> |
|<haskell> |
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Prelude> :r |
Prelude> :r |
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+ | </haskell> |
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+ | |} |
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+ | |||
+ | === Debugging === |
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+ | |||
+ | {| class="wikitable" |
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+ | |- |
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+ | ! Problem |
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+ | ! Solution |
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+ | ! Examples |
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+ | |- |
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+ | | setting a break point |
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+ | | :break |
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+ | |<haskell> |
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+ | Prelude> :break 2 -- sets a break point in line 2 |
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</haskell> |
</haskell> |
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|} |
|} |
Revision as of 08:31, 25 January 2010
GHC
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 |
GHCi
General
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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reloading all loaded files | :r | Prelude> :r
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Debugging
Problem | Solution | Examples |
---|---|---|
setting a break point | :break | Prelude> :break 2 -- sets a break point in line 2
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Hugs
TODO