From e10a33a3b14494a14e44d520b69bfc196e1d7eca Mon Sep 17 00:00:00 2001
From: Evgeny <zobnin@gmail.com>
Date: Thu, 26 Aug 2021 11:05:52 +0300
Subject: [PATCH] add use function to standard lib

---
 lib/utils.lua | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/utils.lua b/lib/utils.lua
index 16c4257..814ee56 100644
--- a/lib/utils.lua
+++ b/lib/utils.lua
@@ -55,3 +55,13 @@ function round(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 use(module, ...)
+    for k,v in pairs(module) do
+        if _G[k] then
+            io.stderr:write("use: skipping duplicate symbol ", k, "\n")
+        else
+            _G[k] = module[k]
+        end
+    end
+end