The array type
Instances1MArray
Storable e => MArray StorableArray e IODefined in array-0.5.8.0 · Data.Array.Storable.Internals
Modulearray-0.5.8.0Haskell2010
Data.Array.Storable.Safe
A storable array is an IO-mutable array which stores its
contents in a contiguous memory block living in the C
heap. Elements are stored according to the class Storable.
You can obtain the pointer to the array contents to manipulate
elements from languages like C.
It is similar to IOUArray but slower. Its advantage is that it's compatible with C.
Safe API only of Data.Array.Storable.
Contents
Synopsis
- data StorableArray
- value withStorableArray
- value touchStorableArray
- Packagearray-0.5.8.0
- Exports3
- LanguageHaskell2010
- LicenceBSD-3-Clause
- SourceSafe.hs
Arrays of Storable things.
Overloaded mutable array interface
Module Data.Array.MArray provides the interface of storable arrays. They are instances of class MArray (with the IO monad).
module Data.Array.MArray.Safe
Accessing the pointer to the array contents
The pointer to the array contents is obtained by withStorableArray. The idea is similar to ForeignPtr (used internally here). The pointer should be used only during execution of the IO action retured by the function passed as argument to withStorableArray.
If you want to use it afterwards, ensure that you touchStorableArray after the last use of the pointer, so the array is not freed too early.