method
rotate!
v1_9_3_392 -
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rotate!(p1 = v1)
public
Rotates self in place so that the element at cnt comes first, and returns self. If cnt is negative then it rotates in the opposite direction.
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"]