Data.Map API

Tomasz Zielonka tomasz.zielonka at
Sat Nov 12 04:13:44 EST 2005

On Sat, Nov 12, 2005 at 02:05:54AM +0100, Benjamin Franksen wrote:
> Last time I used Data.Map I went for
> import qualified Data.Map as Map
> type Map = Map.Map

There is a small problem - you can define type-class instances for
type synonyms in Haskell 98.

What's wrong with this approach, besides being overly verbose:

    import qualified Data.Map as Map
    import Data.Map (Map)

I've seen it used in others' code. The report allows to import
the same module many times:

"A single module may be imported by more than one import declaration."

Best regards

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