X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=util%2Fiterators.lua;h=dc692d64eac36e93a14b07c38488b56de10c5d44;hb=795439b3b41fd0a42fb883124d26f85d6980e99f;hp=ba33bc80b1e5ebb417dc6513ff5eaa9317a46390;hpb=0941c9bd784387284c165757220342286776d436;p=prosody.git

diff --git a/util/iterators.lua b/util/iterators.lua
index ba33bc80..dc692d64 100644
--- a/util/iterators.lua
+++ b/util/iterators.lua
@@ -1,6 +1,6 @@
 -- Prosody IM
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
 -- 
 -- This project is MIT/X11 licensed. Please see the
 -- COPYING file in the source package for more information.
@@ -73,7 +73,7 @@ function count(f, s, var)
 		var = ret[1];
 	        if var == nil then break; end
 		x = x + 1;
-	end	
+	end
 	
 	return x;
 end
@@ -90,6 +90,15 @@ function head(n, f, s, var)
 	end, s;
 end
 
+-- Skip the first n items an iterator returns
+function skip(n, f, s, var)
+	for i=1,n do
+		var = f(s, var);
+	end
+	return f, s, var;
+end
+
+-- Return the last n items an iterator returns
 function tail(n, f, s, var)
 	local results, count = {}, 0;
 	while true do
@@ -122,7 +131,7 @@ function it2array(f, s, var)
 	return t;
 end
 
--- Treat the return of an iterator as key,value pairs, 
+-- Treat the return of an iterator as key,value pairs,
 -- and build a table
 function it2table(f, s, var)
 	local t, var = {};