Yes, there is the length operator:

#table

And the table.maxn function:

table.maxn(table)

Also, an interesting observation, the built-in # operator cannot determine the length of a table or a subset of a table that is used as a dictionary. For example:

#{1,2,3,a=4,5}

will yield 4. notice that elements appended after a key-val pair will be indexed after the last known continuous index

Just as well

example = {1,2,3,4,5}
table.remove(example, 3)
#example

will yield 4 as the elements 4 and 5 are automatically shifted.

That's how to get length that includes whole table elements.

function length(Table)
    local Length,a,b = 0
    for a,b in pairs(Table) do
        Length = Length + 1
    end
    return(Length)
end

my_table = { [21] = "ea", ["dsa"] = 21}
print(length(my_table))

couldn't resst, but lenght is spelled length lawl

Lol, you can say only that? It was spelled right in half post thought. I'm sick at the moment and someone is telling me about spelling mistake in the script variable.