Let's say I have a Ruby array
a = [1, 2, 3, 4]
If I want all but the first item, I can write a.drop(1), which is great. If I want all but the last item, though, I can only think of this way
a[0..-2] # or
a[0...-1]
but neither of these seem as clean as using drop. Any other built-in ways I'm missing?