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rev provides a reversed version of its argument.
rev
ref_rev(x)# S3 method for Deque ref_rev(x)# S3 method for Deque rev(x)
# S3 method for Deque ref_rev(x)
# S3 method for Deque rev(x)
For Deque, an object of class Deque
Deque
Deque object
rev uses copy semantics while ref_rev works by reference, that is, it reverse all elements in place.
ref_rev
base::rev()
d = deque(a = 1, b = 2, 3) rev(d) print(d) ref_rev(d) print(d)
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