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Data.Array.Unboxed

Portability | non-portable (uses Data.Array.IArray)
Stability | experimental
Maintainer | libraries@haskell.org

Contents

Arrays with unboxed elements
The overloaded immutable array interface

Description
Unboxed immutable arrays.
Synopsis

data UArray i e
module Data.Array.IArray

Arrays with unboxed elements
data UArray i e

Arrays with unboxed elements. Instances of `IArray` are provided for `UArray` with certain element types (`Int`, `Float`, `Char`, etc.; see the `UArray` class for a full list).

A `UArray` will generally be more efficient (in terms of both time and space) than the equivalent `Array` with the same element type. However, `UArray` is strict in its elements - so don't use `UArray` if you require the non-strictness that `Array` provides.

Because the `IArray` interface provides operations overloaded on the type of the array, it should be possible to just change the array type being used by a program from say `Array` to `UArray` to get the benefits of unboxed arrays (don't forget to import Data.Array.Unboxed instead of Data.Array).

Instances

Typeable2 UArray
IArray UArray Bool
IArray UArray Char
IArray UArray Double
IArray UArray Float
IArray UArray Int
IArray UArray Int16
IArray UArray Int32
IArray UArray Int64
IArray UArray Int8
IArray UArray Word
IArray UArray Word16
IArray UArray Word32
IArray UArray Word64
IArray UArray Word8
IArray UArray (FunPtr a)
IArray UArray (Ptr a)
IArray UArray (StablePtr a)
(Ix ix, Eq e, IArray UArray e) => Eq (UArray ix e)
(Ix ix, Ord e, IArray UArray e) => Ord (UArray ix e)
(Ix ix, Show ix, Show e, IArray UArray e) => Show (UArray ix e)

The overloaded immutable array interface
module Data.Array.IArray
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