Ruby Ranges first and last release

Question

I stumbled upon strange behavior while playing with the ranges expected:

(1...1).count
# => 0 
(1...1).first(1)
# => [] 
(1...1).last(1)
# => []
(1...1).to_a
# => [] 

but

(1...1).first
# => 1
(1...1).last
# => 1

Am I missing something or is this intentional behavior?

Answer 1

The reason is that it Range#firstis defined as return Range#beginif the argument is not passed .

Similarly - => . Range#lastRange#end