Does Lua have a builtin sum() function? I can't seem to find one, and I've looked almost everywhere in the documentation. Maybe table.sum(), or something of the like, to follow the current conventions. But since I couldn't find it, I had to implement it:

function sum(t)
    local sum = 0
    for k,v in pairs(t) do
        sum = sum + v
    end

    return sum
end

It seems kind of funny to have to implement something this simple, though. Does a builtin function exist, or no?

lua sum built-in
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