    --------------------------------------------------------------------------------
    --  See end of this file for licence information.
    --------------------------------------------------------------------------------
    -- |
    --  Module      :  ListHelpers
    --  Copyright   :  (c) 2003, Graham Klyne, 2009 Vasili I Galchin, 2011, 2012 Douglas Burke
    --  License     :  GPL V2
    --
    --  Maintainer  :  Douglas Burke
    --  Stability   :  experimental
    --  Portability :  H98
    --
    --------------------------------------------------------------------------------

    module Swish.Utils.ListHelpers (flist) where

    -- |Apply list of functions to some value, returning list of results.
    --  It's kind of like an converse map.
    --
    --  This is similar to the 'ap' function in the Monad library.
    --
    flist :: [a->b] -> a -> [b]
    flist :: forall a b. [a -> b] -> a -> [b]
    flist [a -> b]
    fs a
    a = ((a -> b) -> b) -> [a -> b] -> [b]
    forall a b. (a -> b) -> [a] -> [b]
    map ((a -> b) -> a -> b
    forall a b. (a -> b) -> a -> b
    $ a
    a) [a -> b]
    fs

    {-
    flisttest = flist [(1*),(2*),(3*)] 5 -- [5,10,15]
    -}

    {-

    -- |A more generalized form of flist that works with arbitrary Monads.
    --  (Suggested by Derek Elkin.)

    fmonad :: Monad m => m (a->b) -> a -> m b
    fmonad fm a =
        do  { f <- fm
            ; return $ f a
            }

    -}

    {-
    fmonadtest = fmonad [(1*),(2*),(3*)] 3 -- [3,6,9]
    -}

    --------------------------------------------------------------------------------
    --
    --  Copyright (c) 2003, Graham Klyne, 2009 Vasili I Galchin,
    --    2011, 2012 Douglas Burke
    --  All rights reserved.
    --
    --  This file is part of Swish.
    --
    --  Swish is free software; you can redistribute it and/or modify
    --  it under the terms of the GNU General Public License as published by
    --  the Free Software Foundation; either version 2 of the License, or
    --  (at your option) any later version.
    --
    --  Swish is distributed in the hope that it will be useful,
    --  but WITHOUT ANY WARRANTY; without even the implied warranty of
    --  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    --  GNU General Public License for more details.
    --
    --  You should have received a copy of the GNU General Public License
    --  along with Swish; if not, write to:
    --    The Free Software Foundation, Inc.,
    --    59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    --
    --------------------------------------------------------------------------------