diff --git a/main.cpp b/main.cpp
index 529d945..e7136a0 100644
--- a/main.cpp
+++ b/main.cpp
@@ -244,7 +244,6 @@ int main()
 
     std::forward_list<std::deque<std::string>> vec = { { "a", "b" },{ "a", "b" } };
     std::unordered_map<std::string, std::string> m;
-    std::array<std::string, 2> ar = {"d", "v"};
     m["test"] = "asd";
     LuaVal t441 = vec;
     std::cout << t441.dumps() << std::endl;
diff --git a/smallfolk.cpp b/smallfolk.cpp
index dca6cb4..8c908af 100644
--- a/smallfolk.cpp
+++ b/smallfolk.cpp
@@ -61,6 +61,11 @@ std::string LuaVal::tostring() const
 }
 
 size_t LuaVal::LuaValHasher::operator()(LuaVal const & v) const
+{
+    return LuaValHash(v);
+}
+
+size_t LuaValHash(LuaVal const & v)
 {
     switch (v.tag)
     {
@@ -73,7 +78,7 @@ size_t LuaVal::LuaValHasher::operator()(LuaVal const & v) const
     case TNUMBER:
         return std::hash<double>()(v.d);
     case TTABLE:
-        return std::hash<TblPtr>()(v.tbl_ptr);
+        return std::hash<LuaVal::TblPtr>()(v.tbl_ptr);
     }
     return std::hash<std::string>()(v.tostring());
 }
diff --git a/smallfolk.h b/smallfolk.h
index e5b9641..38779d3 100644
--- a/smallfolk.h
+++ b/smallfolk.h
@@ -35,6 +35,20 @@ enum LuaTypeTag
     TBOOL,
 };
 
+class LuaVal;
+size_t LuaValHash(LuaVal const & v);
+
+namespace std {
+    template <>
+    struct hash<LuaVal> {
+    public:
+        size_t operator()(LuaVal const & v) const
+        {
+            return LuaValHash(v);
+        };
+    };
+}
+
 class LuaVal
 {
 public:
@@ -52,7 +66,7 @@ class LuaVal
         size_t operator()(LuaVal const & v) const;
     };
 
-    typedef std::unordered_map<LuaVal, LuaVal, LuaValHasher> LuaTable;
+    typedef std::unordered_map<LuaVal, LuaVal> LuaTable;
     typedef std::unique_ptr<LuaTable> TblPtr; // circular reference memleak if insert self to self
 
     LuaVal(const LuaTypeTag tag) : tag(tag), tbl_ptr(tag == TTABLE ? new LuaTable() : nullptr), d(0), b(false) {}
@@ -63,7 +77,6 @@ class LuaVal
     LuaVal(const std::string & s) : tag(TSTRING), tbl_ptr(nullptr), s(s), d(0), b(false) {}
     LuaVal(const char * s) : tag(TSTRING), tbl_ptr(nullptr), s(s), d(0), b(false) {}
     LuaVal(const bool b) : tag(TBOOL), tbl_ptr(nullptr), d(0), b(b) {}
-    LuaVal(LuaTable const & luatable) : tag(TTABLE), tbl_ptr(new LuaTable(luatable)), d(0), b(false) {}
     LuaVal(LuaVal const & val) : tag(val.tag), tbl_ptr(val.tag == TTABLE ? val.tbl_ptr ? new LuaTable(*val.tbl_ptr) : new LuaTable() : nullptr), s(val.s), d(val.d), b(val.b) {}
     LuaVal(LuaVal && val) noexcept : tag(std::move(val.tag)), tbl_ptr(std::move(val.tbl_ptr)), s(std::move(val.s)), d(std::move(val.d)), b(std::move(val.b)) {}
     LuaVal(std::initializer_list<LuaVal> const & l) : tag(TTABLE), tbl_ptr(new LuaTable()), d(0), b(false)
@@ -122,9 +135,8 @@ class LuaVal
     {
         InitializeMap(l);
     }
-    LuaVal(std::unordered_map<LuaVal, LuaVal> const & l) : tag(TTABLE), tbl_ptr(new LuaTable()), d(0), b(false)
+    LuaVal(std::unordered_map<LuaVal, LuaVal> const & l) : tag(TTABLE), tbl_ptr(new LuaTable(l)), d(0), b(false)
     {
-        InitializeMap(l);
     }
     template<typename K, typename V> LuaVal(std::unordered_map<K, V> const & l) : tag(TTABLE), tbl_ptr(new LuaTable()), d(0), b(false)
     {
@@ -271,6 +283,8 @@ class LuaVal
                 tbl[std::move(k)] = std::move(v);
         }
     }
+    
+    friend size_t LuaValHash(LuaVal const & v);
 
     LuaTypeTag tag;
     TblPtr tbl_ptr;