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:


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)
AuthorHenning Thielemann <>
MaintainerHenning Thielemann <>
Home page
Source repositorythis: darcs get --tag 0.2
head: darcs get
Upload dateFri Mar 14 12:00:59 UTC 2014
Uploaded byHenningThielemann
Downloads386 total (45 in last 30 days)




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