[Haskell-cafe] Function application like a Unix pipe

[Tomasz Zielonka]

On Wed, Nov 23, 2005 at 11:17:25AM +0100, Udo Stenzel wrote:
> infixl 2 \|
> (\|)  = flip (.) -- though I'm using (&)
> 
> The unix pipe becomes (filter ("foo" `isPrefixOf`) \| sort \| nub) or
> something, which is rather neat, and (#) is used to call "member
> functions", as in

Why not use Control.Arrow.>>> ?
The instance for (->) is exactly what you want, and the syntax is quite
nice:

    (filter ("foo" `isPrefixOf`) >>> sort >>> nub)

BTW, using sort before nub is a bit pointless. In fact, using nub for
longer lists is a bad idea.

Best regards
Tomasz