module Random::StringExtensions

Public Instance Methods

at_rand( separator=// ) click to toggle source

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

"Ruby rules".at_rand(' ')  #~> ["Ruby"]
# File lib/standard/facets/random.rb, line 369
def at_rand( separator=// )
  #separator = self.class.patterns( 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.

s = "Ruby rules"
s.at_rand!(' ')    #~> "Ruby"
s                  #~> "rules"
# File lib/standard/facets/random.rb, line 381
def at_rand!( separator=// )
  #separator = self.class.patterns( separator )
  a = self.shatter( separator )
  w = []; a.each_with_index { |s,i| i % 2 == 0 ? w << s : w.last << s }
  i = 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.

"Ruby rules".rand_byte  #~> 121
# File lib/standard/facets/random.rb, line 395
def rand_byte
  self[Random.number(size)]
end
rand_byte!() click to toggle source

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

s = "Ruby rules"
s.rand_byte!      #~> 121
s                 #~> "Rub rules"
# File lib/standard/facets/random.rb, line 405
def rand_byte!
  i = Random.number(size)
  rv = self[i,1]
  self[i,1] = ''
  rv
end
rand_index() click to toggle source

Return a random string index.

"Ruby rules".rand_index  #~> 3
# File lib/standard/facets/random.rb, line 416
def rand_index
  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.

"Ruby rules".shuffle  #~> "e lybRsuur"
# File lib/standard/facets/random.rb, line 425
def shuffle(separator=//)
  split(separator).shuffle.join('')
end
shuffle!(separator=//) click to toggle source

In place version of shuffle.

# File lib/standard/facets/random.rb, line 431
def shuffle!(separator=//)
  self.replace( shuffle(separator) )
end

Public Class Methods

included(base) click to toggle source
# File lib/standard/facets/random.rb, line 337
def self.included(base)
  base.extend(Self)
end