Re: comparing binary numbers with strings

[Shmuel Zeigerman <shmuz@...>]

Merick wrote:
> I was wondering if there was any way - other than using a for loop to 
> iterate through each character - to use the string library to compare 
> two strings with representations of binary numbers and tell whether or 
> not any of the 1's in the strings are in the same position?
>
> Something like compare("11100", "00011") would return false and 
> compare("11100","00111") would return true

require "bit" -- bitlib
function compare(a,b)
  a, b = tonumber(a,2), tonumber(b,2)
  return bit.band(a,b) ~= 0
end

--
Shmuel