Contents

# coding: utf-8
class Integer
  def square?
    return false unless zero? or (positive? and to_s(16)[-1] =~ /[0149]/)
    (sq = sqrt).finite? ? sq.integer? : nil
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
numb-0.152.0	lib/numb/square.rb