[Haskell-cafe] Re: Polyvariadic functions operating with a monoid

[Bartek Ćwikłowski]

Hello Kevin,

2010/10/9 Kevin Jardine <kevinjardine at gmail.com>:
> I was attempting to turn this into a small library and wanted to avoid
> exporting unwrap.
>
> I defined:
>
> polyToMonoid' = unwrap . polyToMonoid

If you disable MonomorphismRestriction this definition typechecks just
fine. Alternatively, you can ask ghci about the type of "unwrap .
polyToMonoid" and paste that into the type sig.

regards,
Bartek Ćwikłowski