How to drop the end of an array in Ruby

Question

Array#drop removes the first n elements of an array. What is a good way to remove the last m elements of an array? Alternately, what is a good way to keep the middle elements of an array (greater than n, less than m)?

Answer 1

This is exactly what Array#pop is for:

x = [1,2,3]
x.pop(2) # => [2,3]
x # => [1]