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tyabe/integer_rand_s.rb

Created July 28, 2011 03:03
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ランダムな文字列を返す
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integer_rand_s.rb
class Integer
def rand_s(char_set=('0'..'z'))
c=char_set.to_a
self.times.inject([]){|a|a<<c[rand(c.size)]}.join
end
end
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