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By: a guest on May 2nd, 2012  |  syntax: None  |  size: 0.18 KB  |  hits: 8  |  expires: Never
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  1. # Strip leading zeroes, check if input matches after conversion to integer
  2. class String
  3.   def is_num?
  4.     self.to_i.to_s == self.gsub(/^0+/, '')
  5.   end
  6. end
  7.  > "045".is_num?
  8.  => true
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