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On 31 May 2016 at 05:42, Justin Donaldson <> wrote:
> it needs to track its length in order to accommodate nil values

The usual approach to store nil values in a table is to use your own
'pseudo nil' value.

local mynil = {}

function set(t,k,v)
    if v == nil then v = mynil end
    t[k] = v

function get(t,k)
    local v = t[k]
    if v == mynil then v = nil end
    return v