Functions with one table argument

[echo-Mike]

If function defined like:

function foo(t)
    local name = t.name or "other"
    local num = t.num or 1
--Stuf
end

Then it will raise an error when called like foo()
Error messege in tabletop interpreter:

stdin:1: attempt to index local 't' (a nil value)
stack traceback:
stdin:1: in function 'foo'
stdin:1: in main chunk
[C]: ?

Same will occur in Codea.
In order to fix this problem you need to use next function definition:

function foo(t)
    local t = t or {}
    local name = t.name or "other"
    local num = t.num or 1
--Stuf
end

This problem is eliminated if all functions called only like foo{}
Where it is occur: many places in project in functions definitions