Method: Array#rotate!

Defined in:

ext/enterprise_script_service/mruby/mrbgems/mruby-array-ext/mrblib/array.rb

#rotate!(count = 1) ⇒ Object

call-seq:

   ary.rotate!(count=1)   -> ary

Rotates +self+ in place so that the element at +count+ comes first, and
returns +self+.

If +count+ is negative then it rotates in the opposite direction, starting
from the end of the array where +-1+ is the last element.

   a = [ "a", "b", "c", "d" ]
   a.rotate!        #=> ["b", "c", "d", "a"]
   a                #=> ["b", "c", "d", "a"]
   a.rotate!(2)     #=> ["d", "a", "b", "c"]
   a.rotate!(-3)    #=> ["a", "b", "c", "d"]

# File 'ext/enterprise_script_service/mruby/mrbgems/mruby-array-ext/mrblib/array.rb', line 492

def rotate!(count=1)
  self.replace(self.rotate(count))
end