Editing Module:Sandbox/Lemondoge/Calc/doc (section)

== Error detection ==

The "times" function (but not the VERY similar "multiplication" function) will return a error like this: "{{#invoke:Sandbox/Lemondoge/Calc|times|0|0|0}}", if the second parameter is 0, unless the third parameter is set to 1. This works by using the code below.
<syntaxhighlight lang="lua">
if num2 == 0 and errordetect ~= 1 then
   return RError("You cannot multiply a number by zero.")
else
   return num1 * num2
end
</syntaxhighlight>