{-
 *  Programmer:	Piotr Borek
 *  E-mail:     piotrborek@op.pl
 *  Copyright 2014 Piotr Borek
 *
 *  Distributed under the terms of the GPL (GNU Public License)
 *
 *  This program 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.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-}

module Simple.UI.Utils (
    removeAt,
    insertAt
) where

removeAt :: Int -> [a] -> [a]
removeAt :: Int -> [a] -> [a]
removeAt Int
index [a]
list = Int -> [a] -> [a]
forall a. Int -> [a] -> [a]
take Int
index [a]
list [a] -> [a] -> [a]
forall a. [a] -> [a] -> [a]
++ Int -> [a] -> [a]
forall a. Int -> [a] -> [a]
drop (Int -> Int
forall a. Enum a => a -> a
succ Int
index) [a]
list

insertAt :: Int -> [a] -> a -> [a]
insertAt :: Int -> [a] -> a -> [a]
insertAt Int
index [a]
list a
c = Int -> [a] -> [a]
forall a. Int -> [a] -> [a]
take Int
index [a]
list [a] -> [a] -> [a]
forall a. [a] -> [a] -> [a]
++ (a
c a -> [a] -> [a]
forall a. a -> [a] -> [a]
: Int -> [a] -> [a]
forall a. Int -> [a] -> [a]
drop Int
index [a]
list)