Class-level methods.

Methods
rand_letter random
Public Instance methods
rand_letter()

Module method to generate a random letter. 

  String::Random.rand_letter  #=> "q"
  String::Random.rand_letter  #=> "r"
  String::Random.rand_letter  #=> "a"

[ + ]

# File lib/more/facets/random.rb, line 355
      def rand_letter
        (Random.number(26) + (Random.number(2) == 0 ? 65 : 97) ).chr
      end
random(max_length = 8, char_re = /[\w\d]/)

Returns a randomly generated string. One possible use is password initialization. Takes a max legnth of characters (default 8) and an optional valid char Regexp (default /\w\d/).

[ + ]

# File lib/more/facets/random.rb, line 336
      def random(max_length = 8, char_re = /[\w\d]/)
        # gmosx: this is a nice example of input parameter checking.
        # this is NOT a real time called method so we can add this
        # check. Congrats to the author.
        raise ArgumentError.new('char_re must be a regular expression!') unless char_re.is_a?(Regexp)
        string = ""
        while string.length < max_length
            ch = Random.number(255).chr
            string << ch if ch =~ char_re
        end
        return string
      end