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Haskell Core Libraries (base package)
Parent
Contents
Index
Control.Monad.ST
Portability
non-portable (requires universal quantification for runST)
Stability
experimental
Maintainer
libraries@haskell.org
Contents
The
ST
Monad
Unsafe operations
Converting
ST
to
IO
Description
This library provides support for
strict
state threads, as described in the PLDI '94 paper by John Launchbury and Simon Peyton Jones
Lazy State Threads
.
Synopsis
data
ST
s a
runST
:: (
forall
s .
ST
s a) -> a
fixST
:: (a ->
ST
s a) ->
ST
s a
unsafeInterleaveST
::
ST
s a ->
ST
s a
unsafeIOToST
::
IO
a ->
ST
s a
stToIO
::
ST
RealWorld a ->
IO
a
The
ST
Monad
data
ST
s a
Instances
MonadFix
(
ST
s)
(
Typeable
a,
Typeable
b) =>
Typeable
(
ST
a b)
MArray
(
STArray
s) e (
ST
s)
MArray
(
STUArray
s)
Bool
(
ST
s)
MArray
(
STUArray
s)
Char
(
ST
s)
MArray
(
STUArray
s)
Int
(
ST
s)
MArray
(
STUArray
s)
Word
(
ST
s)
MArray
(
STUArray
s) (
Ptr
a) (
ST
s)
MArray
(
STUArray
s) (
FunPtr
a) (
ST
s)
MArray
(
STUArray
s)
Float
(
ST
s)
MArray
(
STUArray
s)
Double
(
ST
s)
MArray
(
STUArray
s) (
StablePtr
a) (
ST
s)
MArray
(
STUArray
s)
Int8
(
ST
s)
MArray
(
STUArray
s)
Int16
(
ST
s)
MArray
(
STUArray
s)
Int32
(
ST
s)
MArray
(
STUArray
s)
Int64
(
ST
s)
MArray
(
STUArray
s)
Word8
(
ST
s)
MArray
(
STUArray
s)
Word16
(
ST
s)
MArray
(
STUArray
s)
Word32
(
ST
s)
MArray
(
STUArray
s)
Word64
(
ST
s)
Functor
(
ST
s)
Monad
(
ST
s)
Show
(
ST
s a)
runST
:: (
forall
s .
ST
s a) -> a
fixST
:: (a ->
ST
s a) ->
ST
s a
Unsafe operations
unsafeInterleaveST
::
ST
s a ->
ST
s a
unsafeIOToST
::
IO
a ->
ST
s a
Converting
ST
to
IO
stToIO
::
ST
RealWorld a ->
IO
a
Produced by
Haddock
version 0.4