The convertible package

[Tags: bsd3, library]

convertible provides a typeclass with a single function that is designed to help convert between different types: numeric values, dates and times, and the like. The conversions perform bounds checking and return a pure Either value. This means that you need not remember which specific function performs the conversion you desire.

Also included in the package are optional instances that provide conversion for various numeric and time types, as well as utilities for writing your own instances.

Finally, there is a function that will raise an exception on bounds-checking violation, or return a bare value otherwise, implemented in terms of the safer function described above.

Convertible is also used by HDBC 2.0 for handling marshalling of data to and from databases.

Convertible is backed by an extensive test suite and passes tests on GHC and Hugs.


Versions1.0.0, 1.0.1, 1.0.3, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9,,,,,,
Change logNone available
Dependenciesbase (<4), bytestring, containers, HUnit, mtl, old-locale, old-time, QuickCheck, testpack, time (>= && <1.1.3) [details]
CopyrightCopyright (c) 2009-2009 John Goerzen
AuthorJohn Goerzen
MaintainerJohn Goerzen <>
Home page
UploadedTue Oct 13 14:04:25 UTC 2009 by JohnGoerzen
DistributionsDebian:, FreeBSD:, LTSHaskell:, NixOS:, Stackage:
Downloads30485 total (417 in last 30 days)
0 []
StatusDocs uploaded by user
Build status unknown [no reports yet]




splitbaseChoose the new smaller, split-up base package.EnabledAutomatic
buildtestsBuild the executable to run unit testsDisabledAutomatic

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Maintainers' corner

For package maintainers and hackage trustees