simple queue for Eluna

function CreateQue()
    local que = {que = {}}

    function que:Add(index)
        if (self:Has(index)) then
            return false
        end
        self.que[index] = true
        return true
    end
    function que:Remove(index)
        if (not self:Has(index)) then
            return false
        end
        self.que[index] = nil
        return true
    end
    function que:Has(index)
        return self.que[index] ~= nil
    end
    function que:Get()
        return self.que
    end
    local pairs = pairs
    function que:Count()
        local count = 0
        for k,v in pairs(self.que) do
            count = count + 1
        end
        return count
    end

    return que
end

-- Usage
local plrguid = player:GetGUID()
local que = CreateQue()
local added = que:Add(plrguid)
local removed = que:Remove(plrguid)
local isInQue = que:Has(plrguid)
local count = que:Count()