diff --git a/include/Nazara/Core/ParameterList.hpp b/include/Nazara/Core/ParameterList.hpp
index 75972b49c..3e9d3a825 100644
--- a/include/Nazara/Core/ParameterList.hpp
+++ b/include/Nazara/Core/ParameterList.hpp
@@ -27,6 +27,9 @@ namespace Nz
 
 			void Clear();
 
+			inline void ForEach(const std::function<bool(const ParameterList& list, const String& name)>& callback);
+			inline void ForEach(const std::function<void(const ParameterList& list, const String& name)>& callback) const;
+
 			bool GetBooleanParameter(const String& name, bool* value) const;
 			bool GetColorParameter(const String& name, Color* value) const;
 			bool GetFloatParameter(const String& name, float* value) const;
@@ -102,4 +105,6 @@ namespace Nz
 
 std::ostream& operator<<(std::ostream& out, const Nz::ParameterList& parameterList);
 
+#include <Nazara/Core/ParameterList.inl>
+
 #endif // NAZARA_PARAMETERLIST_HPP
diff --git a/include/Nazara/Core/ParameterList.inl b/include/Nazara/Core/ParameterList.inl
new file mode 100644
index 000000000..b1983b49b
--- /dev/null
+++ b/include/Nazara/Core/ParameterList.inl
@@ -0,0 +1,42 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/ParameterList.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+namespace Nz
+{
+	/*!
+	* \brief Iterates over every value of the parameter list
+	*
+	* \param callback Callback function called with every parameter contained in the list, which can return true to remove the key (or false to keep it)
+	*
+	* \remark Changing the ParameterList while iterating on it may cause bugs, but querying data is safe.
+	*/
+	inline void ParameterList::ForEach(const std::function<bool(const ParameterList& list, const String& name)>& callback)
+	{
+		for (auto it = m_parameters.begin(); it != m_parameters.end();)
+		{
+			if (callback(*this, it->first))
+				it = m_parameters.erase(it);
+			else
+				++it;
+		}
+	}
+
+	/*!
+	* \brief Iterates over every value of the parameter list
+	*
+	* \param callback Callback function called with every parameter contained in the list
+	*
+	* \remark Changing the ParameterList while iterating on it may cause bugs, but querying data is safe.
+	*/
+	inline void ParameterList::ForEach(const std::function<void(const ParameterList& list, const String& name)>& callback) const
+	{
+		for (auto& pair : m_parameters)
+			callback(*this, pair.first);
+	}
+}
+
+#include <Nazara/Core/DebugOff.hpp>
diff --git a/include/Nazara/Lua/LuaInstance.hpp b/include/Nazara/Lua/LuaInstance.hpp
index 39b0879a8..2ac752c9e 100644
--- a/include/Nazara/Lua/LuaInstance.hpp
+++ b/include/Nazara/Lua/LuaInstance.hpp
@@ -101,6 +101,7 @@ namespace Nz
 			bool GetMetatable(int index) const;
 			unsigned int GetStackTop() const;
 			LuaType GetTable(int index = -2) const;
+			LuaType GetTableRaw(int index = -2) const;
 			inline UInt32 GetTimeLimit() const;
 			LuaType GetType(int index) const;
 			const char* GetTypeName(LuaType type) const;
@@ -113,6 +114,7 @@ namespace Nz
 			bool IsValid(int index) const;
 
 			long long Length(int index) const;
+			std::size_t LengthRaw(int index) const;
 
 			void MoveTo(LuaInstance* instance, int n) const;
 
@@ -161,6 +163,7 @@ namespace Nz
 			void SetMetatable(int index) const;
 			void SetMemoryLimit(std::size_t memoryLimit);
 			void SetTable(int index = -3) const;
+			void SetTableRaw(int index = -3) const;
 			void SetTimeLimit(UInt32 timeLimit);
 
 			bool ToBoolean(int index) const;
diff --git a/src/Nazara/Lua/LuaInstance.cpp b/src/Nazara/Lua/LuaInstance.cpp
index 380e7c48f..1c8f25567 100644
--- a/src/Nazara/Lua/LuaInstance.cpp
+++ b/src/Nazara/Lua/LuaInstance.cpp
@@ -503,6 +503,11 @@ namespace Nz
 		return FromLuaType(lua_gettable(m_state, index));
 	}
 
+	LuaType LuaInstance::GetTableRaw(int index) const
+	{
+		return FromLuaType(lua_rawget(m_state, index));
+	}
+
 	LuaType LuaInstance::GetType(int index) const
 	{
 		return FromLuaType(lua_type(m_state, index));
@@ -586,6 +591,11 @@ namespace Nz
 		return luaL_len(m_state, index);
 	}
 
+	std::size_t LuaInstance::LengthRaw(int index) const
+	{
+		return lua_rawlen(m_state, index);
+	}
+
 	void LuaInstance::MoveTo(LuaInstance* instance, int n) const
 	{
 		lua_xmove(m_state, instance->m_state, n);
@@ -750,6 +760,11 @@ namespace Nz
 		lua_settable(m_state, index);
 	}
 
+	void LuaInstance::SetTableRaw(int index) const
+	{
+		lua_rawset(m_state, index);
+	}
+
 	void LuaInstance::SetTimeLimit(UInt32 timeLimit)
 	{
 		if (m_timeLimit != timeLimit)