[swift-evolution] [Review] SE-0123: Disallow coercion to optionals in operator arguments

[Fabian Ehrentraud]

> * What is your evaluation of the proposal?

Given SE-0121 would get accepted, this proposal does only add small additional value, and might even make code unnecessary complicated.

BUT the nil-coalescing operator (??) really should not allow a non-optional on its left hand side.

> * Is the problem being addressed significant enough to warrant a change to Swift?

No, not really once SE-0121 is accepted.

> * Does this proposal fit well with the feel and direction of Swift?

No, too much boilerplate needed in some cases where the coercion is obvious

> * If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?

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> * How much effort did you put into your review? A glance, a quick reading, or an in-depth study?

Working with optionals for some while now, and a few minutes thinking through the implications of the proposal.