Adding up all the numbers in the clipboard

Wouldn’t it be nifty to have a hotkey that will add up all the numbers in the clipboard? You could select a table on a webpage and instantly add up the values. Or if you wanted to add up a bunch of numbers, just type out the numbers, copy them to the clipboard, then hit the hotkey.

Scripting/automation tools make this pretty easy to do. Here’s such a script for AutoHotKey for Windows:

::sum::
Sum := 0
String := Clipboard
FoundPosition := 1
Loop
{
    FoundPosition := RegExMatch(String, "[0-9.]+", Match, FoundPosition)
    If FoundPosition = 0
    {
        Break
    }
    Sum := Sum + Match
    FoundPosition := FoundPosition + StrLen(Match)    
}
Send %Sum%
return

Typing sum [Tab] will output the sum of any numbers found in the clipboard.