Added SortedSet#member? and CoreCommands#ttl per Karl Varga

CHANGELOG.rdoc

@@ -1,5 +1,11 @@
 = Changelog for Redis::Objects
 
+== 0.5.2 [Development]
+
+* Added Redis::SortedSet#member? method [Karl Varga]
+
+* Added +ttl+ method to CoreCommands [Karl Varga]
+
 == 0.5.1 [Final] (23 May 2011)
 
 * Fixed super class delegation conflicts with Redis Counters vs ActiveRecord [Tim Aßmann]

lib/redis/helpers/core_commands.rb

@@ -37,7 +37,11 @@ def expire(seconds)
       def expireat(unixtime)
         redis.expire key, unixtime
       end
-
+
+      def ttl
+        redis.ttl(@key).seconds
+      end
+
       def move(dbindex)
         redis.move key, dbindex
       end

lib/redis/sorted_set.rb

@@ -286,6 +286,11 @@ def range_size(min, max)
       redis.zcount(key, min, max)
     end
 
+    # Return a boolean indicating whether +value+ is a member.
+    def member?(value)
+      !redis.zscore(key, to_redis(value)).nil?
+    end
+
     private
 
     def keys_from_objects(sets)