generic-deepseq

Version 2.0.0.0 revision 0 uploaded 2012-02-22T20:23:05.000Z by MaximeHenrion.

Package meta

Synopsis

Generic deep evaluation of data structures

Description

This package provides a deepseq function analogous to seq, except that it traverses the entire data structure, evaluating it fully, and not just up to head normal form.

Using lists as an example:

> [1,2,undefined] `seq` 3
3

Whereas with deepseq:

> [1,2,undefined] `deepseq` 3
*** Exception: Prelude.undefined

Unlike the deepseq package, this implementation is based on the GHC.Generics framework as found in GHC >= 7.2, so that it can generate instances automatically for any datatype that has a Generic instance, without further code.

data MyType = MyType String Int (Maybe Double)
  deriving Generic
instance DeepSeq MyType

Changes in version 2.0.0.0:

• Vastly improved performance. As a consequence of these changes, the member function of the DeepSeq class is now rnf, instead of deepseq.

• New instances for functions, Ratio and Complex types.

Author

Maxime Henrion

Bug reports

http://bitbucket.org/mumux/generic-deepseq/issues/

Category

Control, Generics

Copyright

2012, Maxime Henrion

Homepage

n/a

Maintainer

Maxime Henrion <mhenrion@gmail.com>

Package URL

n/a

Stability

n/a

Components

• lib:generic-deepseq