Question

When creating a new array in IRB, I can use Array.new to get an empty, unassigned array.

Is there a way to reassign that new array? Can I turn, [] into a variable named my_new_array?

I know I can do this:

my_new_array = Array.new

Or I can do:

my_other_new_array = []

But what about reassigning Array.new?

I’m new to Ruby and I’m curious about this little nuance.

Answer 1

In IRB, the underscore _ method will give you the results of the last expression:

Array.new
# => []
my_new_array = _
# => []
Array.new(2, "foo")
# => ["foo", "foo"]
my_new_array = _
# => ["foo", "foo"]