Approach to generate a random String in Ruby

Approach to generate a random String in Ruby:

When you need to generate a random alphanumeric string of a specified length in Ruby, you have a couple of options....

Custom String generator:

Ruby class Generator # Define CHARSET by merging character ranges # and converting them to arrays CHARSET = [('0'..'9'), ('a'..'z'), ('A'..'Z')].flat_map(&:to_a) # Constructor method to initialize # the Generator object def initialize(length:, exceptions: []) @length = length # Create allowed_charset by removing # exception characters from CHARSET @allowed_charset = CHARSET - exceptions end # Method to generate a random string of # specified length using the allowed character set def perform # Generate an array of length @length, # where each element is a random # character from @allowed_charset random_string = Array.new(@length) { @allowed_charset.sample } # Join the array elements to form # a single string and return it random_string.join end end # Create an instance of Generator with # length 10 and exceptions for characters # that might be confused generator = Generator.new(length: 10, exceptions: ['1', 'I', 'l', '0', 'o', 'O']) # Generate and print a single random string puts generator.perform # Create another instance of Generator # with the same specifications better_generator = Generator.new(length: 10, exceptions: ['1', 'I', 'l', '0', 'o', 'O']) # Generate an array of 3 random # strings and print them puts (1..3).map { better_generator.perform }...