1 files changed, 17 insertions, 1 deletions
diff --git a/src/trie.hpp b/src/trie.hpp
index dbf1cb1..a2b55c6 100644
--- a/src/trie.hpp
+++ b/src/trie.hpp
@@ -35,12 +35,28 @@ namespace zmq
         trie_t ();
         ~trie_t ();
 
-        void add (unsigned char *prefix_, size_t size_);
+        //  Add key to the trie. Returns true if this is a new item in the trie
+        //  rather than a duplicate.
+        bool add (unsigned char *prefix_, size_t size_);
+
+        //  Remove key from the trie. Returns true if the item is actually
+        //  removed from the trie.
         bool rm (unsigned char *prefix_, size_t size_);
+
+        //  Check whether particular key is in the trie.
         bool check (unsigned char *data_, size_t size_);
 
+        //  Apply the function supplied to each subscription in the trie.
+        void apply (void (*func_) (unsigned char *data_, size_t size_,
+            void *arg_), void *arg_);
+
     private:
 
+        void apply_helper (
+            unsigned char **buff_, size_t buffsize_, size_t maxbuffsize_,
+            void (*func_) (unsigned char *data_, size_t size_, void *arg_),
+            void *arg_);
+
         uint32_t refcnt;
         unsigned char min;
         unsigned short count;