Sandboxed table system -- Add custom methods to table

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#21

https://developer.roblox.com/en-us/resources/release-note/Release-Notes-for-407

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Am I missing something important?

#22

I’ve just appended table.join. This should come in handy for a few of you.

(I’d have used “table.concat” like how C# uses, but in lua that serves as something else already)

#23

Having functions to rotate a table or reverse it would be nice too.

local function rotateLeft(tbl,amount,i,j)
    i = i or 1
    j = j or #tbl
    for _=1,amount or 1 do
        table.insert(tbl,j,table.remove(tbl,i))
    end
end
local function rotateRight(tbl,amount,i,j)
    i = i or 1
    j = j or #tbl
    for _=1,amount or 1 do
        table.insert(tbl,i,table.remove(tbl,j))
    end
end
local function rotate(tbl,amount,i,j)
    local l = amount < 0
    return (l and rotateLeft or rotateRight)(tbl,l and -amount or amount,i,j)
end
-- (could improve these probably, so they're O(n) instead of O(n*amount))
local function reverse(tbl)
    local length = #tbl
    for i=1,length/2 do
        local j = length-i+1
        tbl[i],tbl[j] = tbl[j],tbl[i]
    end
end