<https://github.com/apple/swift-evolution/blob/master/proposals/0185-synthesize-equatable-hashable.md>
## What is your evaluation of the proposal? ##
+1
When `Codable` can be synthesized in a same-file extension, the same should
hopefully be possible with `Equatable` and `Hashable`.
"We can relax this restriction soon; it will just require some
additional implementation that's not ready yet."
<https://github.com/apple/swift/pull/9758#issuecomment-302752673>
An empty same-file extension will be sufficient to opt-in, so `AutoEquatable`
and `AutoHashable` aren't necessary.
extension Token: Hashable {}
## Is the problem being addressed significant enough to warrant a change to
Swift? ##
Yes, eliminating boilerplate and bug-prone code is a worthwhile contribution.
## Does this proposal fit well with the feel and direction of Swift? ##
Yes, it follows the existing rules for `Codable` synthesis.
## How much effort did you put into your review? A glance, a quick reading, or
an in-depth study? ##
A quick reading.
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