[Haskell-cafe] Announcing OneTuple-0.1.0
lennart at augustsson.net
Thu Oct 2 19:09:03 EDT 2008
Just FYI, at Credit Suisse I wrote a 1-tuple type a few years ago. It
was the only way to get a consistent way of dealing with certain
But I called it One.
I think the OneTuple should be in the base library, I mean, ask an 8
year old what number is missing in this sequence 0,2,3,4,5,6,7,8,9,...
On Thu, Oct 2, 2008 at 7:56 AM, John Dorsey <haskell at colquitt.org> wrote:
> Fellow Haskellers,
> Much attention has been paid over the years to the regrettable
> omission of singleton tuples from Haskell.
> I am pleased to announce OneTuple, a humble implementation of the
> singleton tuple for Haskell. Now you can:
> * Wrap a single value of any type in a OneTuple !
> * Pattern match to retrieve your value !
> * Solve any of the software problems that cannot be solved without
> the singleton tuple !
> * Enjoy instances for all the classes normal tuples have, plus more !
> * Proclaim feature parity with Python !
> Note: the singleton tuple does not support tuple syntax.
> Contributions are welcome. The project could use a tutorial, and a
> decent test suite. Strict singleton tuples are planned for the next
> John Dorsey
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> Haskell-Cafe at haskell.org
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