module Random::StringExtensions

Random extensions for String class.

Public Class Methods

included(base) click to toggle source
# File lib/garcon/core_ext/random.rb, line 358
def self.included(base)
  base.extend(Self)
end

Public Instance Methods

at_rand(separator = //) click to toggle source

Return a random separation of the string. Default separation is by charaacter.

@example

"Ruby rules".at_rand(' ')  # => ["Ruby"]
# File lib/garcon/core_ext/random.rb, line 421
def at_rand(separator = //)
  self.split(separator, -1).at_rand
end
at_rand!(separator = //) click to toggle source

Return a random separation while removing it from the string. Default separation is by character.

@example

s = "Ruby rules"
s.at_rand!(' ')    # => "Ruby"
s                  # => "rules"
# File lib/garcon/core_ext/random.rb, line 433
def at_rand!(separator = //)
  a = self.shatter(separator)
  w = []; a.each_with_index { |s, i| i % 2 == 0 ? w << s : w.last << s }
  i = SecureRandom.random_number(w.size)
  r = w.delete_at(i)
  self.replace(w.join(''))
  return r
end
rand_byte() click to toggle source

Return a random byte of self.

@example

"Ruby rules".rand_byte  # => 121
# File lib/garcon/core_ext/random.rb, line 447
def rand_byte
  self[SecureRandom.random_number(size)]
end
rand_byte!() click to toggle source

Destructive rand_byte. Delete a random byte of self and return it.

@example

s = "Ruby rules"
s.rand_byte!      # => 121
s                 # => "Rub rules"
# File lib/garcon/core_ext/random.rb, line 458
def rand_byte!
  i = SecureRandom.random_number(size)
  rv = self[i,1]
  self[i,1] = ''
  rv
end
rand_index() click to toggle source

Return a random string index.

@example

"Ruby rules".rand_index  # => 3
# File lib/garcon/core_ext/random.rb, line 470
def rand_index
  SecureRandom.random_number(size)
end
shuffle(separator = //) click to toggle source

Return the string with seperated sections arranged in a random order. The default seperation is by character.

@example

"Ruby rules".shuffle  # => "e lybRsuur"
# File lib/garcon/core_ext/random.rb, line 480
def shuffle(separator = //)
  split(separator).shuffle.join('')
end
shuffle!(separator = //) click to toggle source

In place version of shuffle.

# File lib/garcon/core_ext/random.rb, line 486
def shuffle!(separator = //)
  self.replace(shuffle(separator))
end