Circular shift of vector (equivalent to numpy.roll)

Question

I have a vector:

a <- c(1,2,3,4,5)

And I\'d like to do something like:

b <- roll(a, 2) # 4,5,1,2,3

Is t

Answer 1

The package binhf has the function shift:

library(binhf)

shift(1:5, places = 2)
#[1] 4 5 1 2 3

places can be positive or negative