update

koptilnya/libs/utils.txt

@@ -72,4 +72,15 @@ function isURL(str)
     local _1, _2, prefix = str:find("^(%w-):")
 
     return prefix == "http" or prefix == "https" or prefix == "data"
+end
+
+function debounce(func, delay)
+    local lastCall = 0
+    return function(...)
+        local now = timer.systime()
+        if now - lastCall >= delay then
+            lastCall = now
+            return func(...)
+        end
+    end
 end