DanC wrote: > I hope this isn't a stupid question but I don't understand the 01010 = > 10 part?
I was simply showing the 01010 in binary (0b01010) is equal to 10 in decimal. So in order to create a bit mask all you need to store is a simple integer (Fixnum). Example 1: Say your bit mask value is: x = 0b01010 => 10 If you want to know if the second bit from the left is set create a mask with the desired bit set: mask = 0b01000 => 8 then bit-wise AND the value with the mask: x & mask > 0 => true mask = 0b00100 x & mask > 0 # is the third bit from left set? => false Example 2: http://pastie.textmate.org/private/acweqtdqm3jdhtufe4ag -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
