# File lib/glue/string.rb, line 190 def self.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 = rand(255).chr string << ch if ch =~ char_re end return string end