Add class Technology

cf-lib/util/table.lua

@@ -60,7 +60,11 @@ function table.filter(target, predicate)
     local result = {}
     for k, v in pairs(target) do
         if predicate(v, k) then
-            result[k] = v
+            if type(k) == "number" then
+                table.insert(result, v)
+            else
+                result[k] = v
+            end
         end
     end
     return result