On Oct 12, 2011, at 2:58 PM, Alexander Gladysh wrote: >> http://www.lua.org/manual/5.1/manual.html#pdf-string.len > > This does not means that one should use it. Why not? What's wrong with string.len? >> The length operator is new (in 5.1): >> >> http://www.lua.org/manual/5.1/manual.html#2.5.5 > > Why do you mention it? It applies to string as well: ( 'hello world' ):len() == #( 'hello world' )