[Haskell-cafe] ANNOUNCE: tupleinstances-0.0.1
diegoeche at gmail.com
Tue Mar 16 13:20:03 EDT 2010
On Tue, Mar 16, 2010 at 11:15 AM, Henning Thielemann
<thunderbird at henning-thielemann.de> wrote:
> newtype T3 a = T3 (a,a,a)
> which could well be
> data T3 a = T3 a a a
I chose that specific representation just because at the end I want to use
normal tuples. I thought this way was easier for "boxing" an "unboxing"
> Are these types used for vector computations or what application do you have
> in mind?
I didn't have any specific application for the library. One day I
just wanted to do an fmap with a tuple and somebody in #haskell
Of course this only works for binary tuples. I thought this would
be a good excuse to play with template-haskell and give instances
to some of the type classes I learnt about in the Typeclassopedia.
I found it useful for vector computations. But aggregating with
the Foldable instance is also handy.
> Then again, is tuple-instance still an appropriate name?
"There are only two hard things in Computer Science: cache invalidation
and naming things"
- Phil Karlton
I'm open to suggestions :-)
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