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Moose Development/Moose/Utilities/Utils.lua

@@ -303,3 +303,27 @@ function UTILS.DoString( s )
     return false, err
   end
 end
+
+-- Here is a customized version of pairs, which I called spairs because it iterates over the table in a sorted order.
+function UTILS.spairs( t, order )
+    -- collect the keys
+    local keys = {}
+    for k in pairs(t) do keys[#keys+1] = k end
+
+    -- if order function given, sort by it by passing the table and keys a, b,
+    -- otherwise just sort the keys 
+    if order then
+        table.sort(keys, function(a,b) return order(t, a, b) end)
+    else
+        table.sort(keys)
+    end
+
+    -- return the iterator function
+    local i = 0
+    return function()
+        i = i + 1
+        if keys[i] then
+            return keys[i], t[keys[i]]
+        end
+    end
+end