foldl' ?

[Mark Carroll]

On Sat, 16 Nov 2002, Hal Daume III wrote:

> If it appears in Data.List then you need to import Data.List.  In order to
> do this, you will need a newer (>=5.03) version of GHC, if I'm not
> mistaken.

I find it curious that I can do:

cicero:markc$ ghci -package data
   ___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version 5.04, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base ... linking ... done.
Loading package haskell98 ... linking ... done.
Loading package lang ... linking ... done.
Loading package concurrent ... linking ... done.
Loading package posix ... linking ... done.
Loading package util ... linking ... done.
Loading package data ... linking ... done.
Prelude> :type FiniteMap.lookupFM
forall key elt.
(Ord key) =>
Data.FiniteMap.FiniteMap key elt -> key -> Maybe elt
Prelude> :type List.isSuffixOf
forall a. (Eq a) => [a] -> [a] -> Bool
Prelude> :type List.foldl'

<interactive>:1: Variable not in scope: `List.foldl''
Prelude>


How come I can get at lookupFM and isSuffixOf but not foldl'? (-:

(Thanks to you and Richard for replies!)

-- Mark