add gs

RCCService2018/content/LuaPackages/RoduxImpl/combineReducers.lua

@@ -0,0 +1,22 @@
+--[[
+	Create a composite reducer from a map of keys and sub-reducers.
+]]
+local function combineReducers(map)
+	return function(state, action)
+		-- If state is nil, substitute it with a blank table.
+		if state == nil then
+			state = {}
+		end
+
+		local newState = {}
+
+		for key, reducer in pairs(map) do
+			-- Each reducer gets its own state, not the entire state table
+			newState[key] = reducer(state[key], action)
+		end
+
+		return newState
+	end
+end
+
+return combineReducers