[Haskell-cafe] ordNub

[Niklas Hambüchen]

One of my main points is:

Should we not add such a function (ord-based, same output as nub, 
stable, no sorting) to base?

As the package counting shows, if we don't offer an alternative, people 
obviously use it, and not to our benefit.

(Not to say it this way:
We could make the Haskell world fast with smarter fusion, strictness 
analysis and LLVM backends.
Or we could stop using quadratic algorithms.)