Deepseq proposed patch

Stephen Tetley stephen.tetley at
Fri Jun 11 03:20:05 EDT 2010

On 10 June 2010 22:15, Julian Blake Kongslie <jblake at> wrote:
> The point of my email was more that I'm not sure it
> makes sense to have a "NFData" class, where "Data" would appear to suffice
> and be easier for programmers to work with.

Don't Data.Data and traversals through gmapQ etc have a reputation for
being particularly slow? (most newer generics libraries benchmark
against it to show their swiftness).

That seems one good reason against this broad instance.

Best wishes


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