Wed, 22 Apr 2009 18:03:02 +0100
util.set: Add set:empty() to discover if the set is the empty set
--- a/util/set.lua Wed Apr 22 18:00:45 2009 +0100 +++ b/util/set.lua Wed Apr 22 18:03:02 2009 +0100 @@ -91,6 +91,10 @@ end end + function set:empty() + return not next(items); + end + if list then set:add_list(list); end