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GHC 10.0.0.20260917 · lts/ghc-10.0.x · 2b27632 · 2026-10-31

Modulearray-0.5.8.0Haskell2010

Data.Array.IO.Safe

Mutable boxed and unboxed arrays in the IO monad. . Safe API only of Data.Array.IO.

Contents
  1. IO arrays with boxed elements
  2. IO arrays with unboxed elements
  3. Overloaded mutable array interface
  4. Doing I/O with IOUArrays
Synopsis
  • Packagearray-0.5.8.0
  • Exports4
  • LanguageHaskell2010
  • LicenceBSD-3-Clause
  • SourceSafe.hs

IO arrays with boxed elements

newtypenewtype 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.

Instances2MArray, Eq
  • MArray IOArray e IODefined in array-0.5.8.0 · Data.Array.Base
  • Eq (IOArray i e)Defined in ghc-internal-10.0.0 · GHC.Internal.IOArray

IO arrays with unboxed elements

newtypenewtype IOUArray i e
Source#

Mutable, unboxed, strict arrays 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. Only certain element types are supported: see Data.Array.MArray for a list of instances.

Instances18MArray, Eq, …

Overloaded mutable array interface

module Data.Array.MArray.Safe

Doing I/O with IOUArrays

valuehGetArray
  1. :: Handle

    Handle to read from

  2. -> IOUArray Int Word8

    Array in which to place the values

  3. -> Int

    Number of Word8s to read

  4. -> IO Int

    Returns: the number of Word8s actually read, which might be smaller than the number requested if the end of file was reached.

Source#

Reads a number of Word8s from the specified Handle directly into an array.