Question

Easy question here, probably, but searching did not find a similar question.

The # operator finds the length of a string, among other things, great. But with Lua being dynamically typed, thus no conversion operators, how does one type a number as a string in order to determine its length?

For example suppose I want to print the factorials from 1 to 9 in a formatted table.

i,F = 1,1
while i<10 do
    print(i.."! == "..string.rep("0",10-#F)..F)
    i=i+1
    F=F*i
end

error: attempt to get length of global ‘F’ (a number value)

Answer 1

why not use tostring(F) to convert F to a string?