hashabler: Principled, portable & extensible hashing of data and types, including an implementation of the FNV-1a and SipHash algorithms.
This package is a rewrite of the hashable
library by Milan Straka and
Johan Tibell, having the following goals:
Extensibility; it should be easy to implement a new hashing algorithm on any
Hashable
type; in this package we provide SipHash and FNV-1a.Honest hashing of values, and principled hashing of algebraic data types (see e.g. hashable issues #74 and #30)
Cross-platform consistent hash values, with a versioning guarantee. Where possible we ensure morally identical data hashes to indentical values regardless of processor word size and endianness.
Make implementing identical hash routines in other languages as painless as possible. In addition to SipHash, we provide an implementation of a simple hashing algorithm (FNV-1a) and make an effort to define Hashable instances in a way that is well-documented and sensible, so that e.g. one can easily implement a string hashing routine in JavaScript that will match the way we hash strings here.
Versioning: Except for instances where we specifically note that we make
no promise of consistency, changes to hash values (and consequently changes
to StableHashable
values, where applicable) entail a major version number
bump.
Flags
Manual Flags
Name | Description | Default |
---|---|---|
dev | To build tests, executables and benchmarks do `configure -fdev --enable-tests` and run the built executables by hand (i.e. not with `cabal test` etc.; we put all our different executables in test-suite sections in order to hide their dependencies from hackage) | Disabled |
instrumented | Enables assertions in library code. When --enable-library-profiling and --enable-executable-profiling is turned on, you can get stacktraces as well | Disabled |
Automatic Flags
Name | Description | Default |
---|---|---|
integer-gmp | Are we using integer-gmp to provide fast Integer instances? This is ignored when using ghcjs | Enabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- hashabler-2.0.0.tar.gz [browse] (Cabal source package)
- Package description (revised from the package)
Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.
Maintainer's Corner
For package maintainers and hackage trustees
Candidates
- No Candidates
Versions [RSS] | 0.1.0.0, 0.1.0.1, 0.1.0.2, 1.0, 1.1, 1.2, 1.2.1, 1.3.0, 2.0.0 |
---|---|
Change log | CHANGELOG.markdown |
Dependencies | array (>=0.4), base (>=4.6 && <4.10), bytestring, ghc-prim, integer-gmp (>=0.2), primitive, template-haskell, text (>=1.1.1.3), transformers [details] |
Tested with | ghc ==7.6.3, ghc ==7.8.4, ghc ==7.10.3, ghc ==8.0.1, ghcjs ==0.2.0 |
License | BSD-3-Clause |
Author | Brandon Simmons |
Maintainer | brandon.m.simmons@gmail.com |
Revised | Revision 2 made by HerbertValerioRiedel at 2017-06-03T16:58:44Z |
Category | Data |
Home page | https://github.com/jberryman/hashabler |
Source repo | head: git clone https://github.com/jberryman/hashabler.git |
Uploaded | by BrandonSimmons at 2016-11-20T03:06:19Z |
Distributions | |
Reverse Dependencies | 2 direct, 0 indirect [details] |
Downloads | 8953 total (37 in the last 30 days) |
Rating | 2.0 (votes: 1) [estimated by Bayesian average] |
Your Rating | |
Status | Docs available [build log] Last success reported on 2016-11-20 [all 1 reports] |