comfort-array
Version 0.5 revision 0 uploaded by HenningThielemann.
Package meta
- Synopsis
- Arrays where the index type is a function of the shape type
- Description
Arrays from the basic
array
package are already very powerful compared with arrays in other languages. They may have any number of dimensions, are type safe and defined in a uniform way using the Ix class with free choice of the lower bounds (0, 1, or whatever you like).This package goes one step further: The shape and the index type are different, but the index type is a type function of the shape type. This offers much more flexibility and type safety.
Some examples are:
Range
: Allow dynamic choice of lower and upper array bounds such as in the Arrays from thearray
package. You can combine it with other shapes in other dimensions. It allows you to describe the bounds of each dimension individually.Shifted
: Describe array bounds by start index and length. It is sometimes more natural to use these parameters. E.g. a non-negative index type like Word cannot represent-1
and thus cannot encode an empty range starting with index0
.ZeroBased, OneBased
: Arrays with fixed lower bound, either 0 or 1, respectively.Cyclic
: Indices with wrap-around semantics.Zero, ()
: Arrays with fixed size 0 or 1, respectively.Enumeration
: Arrays with indices like LT, EQ, GT and a shape of fixed size.(::+)
: The Append type constructor allows to respresent block arrays, e.g. block matrices. It also allows to represent non-empty arrays via()::+sh
.Set
: Use an arbitrary ordered set as index set.Map
: Concatenate a set of shapes.Triangular
: A 2D array with the shape of a lower or upper triangular matrix.Simplex
: Simplices of any dimension, where the dimension is encoded in the type. An index is a tuple of monotonic ordered sub-indices.Square
: A 2D array where both dimensions always have equal size.Cube
: A 3D array where all three dimensions always have equal size.Tagged
: Statically distinguish shapes and indices that are isomorphic.
With our
Array
type you can performFast Linear Algebra using the package
lapack
. Thelapack
package defines even more fancy shapes like tall rectangular matrices, triangular matrices and banded matrices.Fast Fourier Transforms using the package
comfort-fftw
Efficient Array Processing via LLVM Just-In-Time code generation using the package
knead
.
See also
comfort-graph
for a Graph data structure, with non-Int node identifiers and flexible edge types.- Author
- Henning Thielemann <haskell@henning-thielemann.de>
- Bug reports
- n/a
- Category
- Data Structures
- Copyright
- n/a
- Homepage
- https://hub.darcs.net/thielema/comfort-array/
- Maintainer
- Henning Thielemann <haskell@henning-thielemann.de>
- Package URL
- n/a
- Stability
- n/a