base-4.19.2.0: Core data structures and operations

Copyright	(c) The University of Glasgow 2008
License	see libraries/base/LICENSE
Maintainer	cvs-ghc@haskell.org
Stability	internal
Portability	non-portable (GHC Extensions)
Safe Haskell	Unsafe
Language	Haskell2010

GHC.IOArray

Description

The IOArray type

Synopsis

newtype IOArray i e = IOArray (STArray RealWorld i e)
newIOArray :: Ix i => (i, i) -> e -> IO (IOArray i e)
unsafeReadIOArray :: IOArray i e -> Int -> IO e
unsafeWriteIOArray :: IOArray i e -> Int -> e -> IO ()
readIOArray :: Ix i => IOArray i e -> i -> IO e
writeIOArray :: Ix i => IOArray i e -> i -> e -> IO ()
boundsIOArray :: IOArray i e -> (i, i)

Documentation

newtype IOArray i e Source #

An IOArray is a mutable, boxed, non-strict array in the IO monad. The type arguments are as follows:

i: the index type of the array (should be an instance of Ix)
e: the element type of the array.

Constructors

IOArray (STArray RealWorld i e)

Instances

Instances details

Eq (IOArray i e) Source #	Since: base-4.1.0.0
Instance details Defined in GHC.IOArray Methods (==) :: IOArray i e -> IOArray i e -> Bool Source # (/=) :: IOArray i e -> IOArray i e -> Bool Source #

newIOArray :: Ix i => (i, i) -> e -> IO (IOArray i e) Source #

Build a new IOArray

unsafeReadIOArray :: IOArray i e -> Int -> IO e Source #

Read a value from an IOArray

unsafeWriteIOArray :: IOArray i e -> Int -> e -> IO () Source #

Write a new value into an IOArray

readIOArray :: Ix i => IOArray i e -> i -> IO e Source #

Read a value from an IOArray

writeIOArray :: Ix i => IOArray i e -> i -> e -> IO () Source #

Write a new value into an IOArray

boundsIOArray :: IOArray i e -> (i, i) Source #