Hello all,

I need a function which takes a number (x) and outputs a string which 
contains x zeroes. e.g.

foo(3) = "000"
foo(5) = "00000"

etc.

in Python this function is ''.zfill(5)
another possibility would be 5*'0'

Equivalents in Ruby? I would be mainly interested in a zfill equivalent 
since that is faster that join or 5* imho.

Thx
Peter