I'm looking at the Comparable module in a book, and I can't figure out
how to do a simple comparison.  What I want to do is a loop based on a
counter.  If the counter is less than 3, I want to execute the loop,
otherwise I want the loop to end.  I'm used to coding something like if
$cnt < 3 but in Ruby that doesn't seem to work.  Obviously I'm new to OO
programming, so can someone give me a simple example of how to do this,
or point me to a simple tutorial on how to do comparisons?
Thanks
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