update

utils.lua

@@ -12,9 +12,33 @@ function get_args_kv()
     return { keys, values }
 end
 
+function string:split(sep)
+    if sep == nil then
+        sep = "%s"
+    end
+    
+    local t={}
+    
+    for str in string.gmatch(self, "([^"..sep.."]+)") do
+        table.insert(t, str)
+    end
+    
+    return t
+end
+
 function round(x, n)
     local n = math.pow(10, n or 0)
     local x = x * n
     if x >= 0 then x = math.floor(x + 0.5) else x = math.ceil(x - 0.5) end
     return x / n
 end
+
+function table:has_value(val)
+    for index, value in ipairs(self) do
+        if value == val then
+            return true
+        end
+    end
+
+    return false
+end