eql?

        # Range.eql?

(from ruby core)
---
    eql?(other) -> true or false

---

Returns `true` if and only if:

*   `other` is a range.
*   `other.begin eql? self.begin`.
*   `other.end eql? self.end`.
*   `other.exclude_end? == self.exclude_end?`.


Otherwise returns `false`.

    r = (1..5)
    r.eql?(1..5)                  # => true
    r = Range.new(1, 5)
    r.eql?('foo')                 # => false
    r.eql?(2..5)                  # => false
    r.eql?(1..4)                  # => false
    r.eql?(1...5)                 # => false
    r.eql?(Range.new(1, 5, true)) # => false

Note that even with the same argument, the return values of #== and
#eql? can differ:

    (1..2) == (1..2.0)   # => true
    (1..2).eql? (1..2.0) # => false

Related: Range#==.