The non-empty package

[Tags: bsd3, library]

We provide the data type NonEmpty that allows to store a list-like structure with at least or exactly n elements, where n is fixed in the type in a kind of Peano encoding and is usually small. The datatype is intended to increase safety by making functions total that are partial on plain lists. E.g. on a non-empty list, head and tail are always defined.

There are more such data types like Optional and Empty. Together with NonEmpty you can define a list type for every finite set of admissible list lengths.

The datatype can be combined with Lists, Sequences and Sets (from the containers package).

The package needs only Haskell 98.

Similar packages:

Related packages:


Properties

Versions0.0, 0.1, 0.1.1, 0.1.2, 0.1.3, 0.2
Dependenciesbase (==4.*), containers (>=0.4 && <0.6), QuickCheck (>=2.1 && <3), utility-ht (>=0.0.1 && <0.1)
LicenseBSD3
AuthorHenning Thielemann <haskell@henning-thielemann.de>
MaintainerHenning Thielemann <haskell@henning-thielemann.de>
CategoryData
Home pagehttp://code.haskell.org/~thielema/non-empty/
Source repositorythis: darcs get http://code.haskell.org/~thielema/non-empty --tag 0.1.2
head: darcs get http://code.haskell.org/~thielema/non-empty
Upload dateSat Jun 15 19:13:15 UTC 2013
Uploaded byHenningThielemann
Downloads446 total (37 in last 30 days)

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