Module: Random::String

Defined in:
lib/gems/facets-2.4.5/lib/more/facets/random.rb

Defined Under Namespace

Modules: Self

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



318
319
320
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 318

def self.included(base)
  base.extend(Self)
end

Instance Method Details

#at_rand(separator = //) ⇒ Object

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

"Ruby rules".at_rand(' ')  #=> ["Ruby"]



366
367
368
369
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 366

def at_rand( separator=// )
  #separator = self.class.patterns( separator )
  self.split(separator,-1).at_rand
end

#at_rand!(separator = //) ⇒ Object

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

s = "Ruby rules"
s = at_rand!(' ')  #=> "Ruby"
s                  #=> "rules"



378
379
380
381
382
383
384
385
386
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 378

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 ⇒ Object

Return a random byte of self.

"Ruby rules".rand_byte  #=> 121



392
393
394
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 392

def rand_byte
  self[Random.number(size)]
end

#rand_byte! ⇒ Object

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

s = "Ruby rules"
s.rand_byte!      #=> 121
s                 #=> "Rub rules"



402
403
404
405
406
407
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 402

def rand_byte!
  i = Random.number(size)
  rv = self[i,1]
  self[i,1] = ''
  rv
end

#rand_index ⇒ Object

Return a random string index.

"Ruby rules".rand_index  #=> 3



413
414
415
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 413

def rand_index
  Random.number(size)
end

#shuffle(separator = //) ⇒ Object

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

"Ruby rules".shuffle  #=> "e lybRsuur"



422
423
424
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 422

def shuffle(separator=//)
  split(separator).shuffle.join('')
end

#shuffle!(separator = //) ⇒ Object

In place version of shuffle.



428
429
430
 
# File 'lib/gems/facets-2.4.5/lib/more/facets/random.rb', line 428

def shuffle!(separator=//)
  self.replace( shuffle(separator) )
end