From 9e59164e5747235892f81ed6b6db67c63be89fe5 Mon Sep 17 00:00:00 2001
From: Marc Weber <marco-oweber@gmx.de>
Date: Sat, 17 Apr 2010 18:26:40 +0000
Subject: adding lib function haskell's drop x elements from head of list

svn path=/nixpkgs/trunk/; revision=21141
---
 pkgs/lib/lists.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/lib/lists.nix b/pkgs/lib/lists.nix
index 6141ad413d36..9b8334a5b9df 100644
--- a/pkgs/lib/lists.nix
+++ b/pkgs/lib/lists.nix
@@ -167,6 +167,11 @@ rec {
     if list == [] || count == 0 then []
     else [ (head list) ] ++ take (builtins.sub count 1) (tail list);
 
+  # haskell's drop. drop count elements from head of list
+  drop = count: list:
+    if count == 0 then list
+    else drop (builtins.sub count 1) (tail list);
+
   last = list:
     assert list != [];
     let loop = l: if tail l == [] then head l else loop (tail l); in
-- 
cgit 1.4.1