Generic deep evaluation of data structures
|Latest on Hackage:||188.8.131.52|
This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.
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
> [1,2,undefined] `deepseq` 3 *** Exception: Prelude.undefined
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
without further code.
data MyType = MyType String Int (Maybe Double) deriving Generic instance DeepSeq MyType
Changes in version 184.108.40.206:
Vastly improved performance. As a consequence of these changes, the member function of the DeepSeq class is now
rnf, instead of
New instances for functions, Ratio and Complex types.
Changes in version 220.127.116.11:
Fix the U1 and V1 instances.
Changes in version 18.104.22.168:
No functional changes, updated to correct the URLs of the repository and the issue tracker.