[swift-evolution] [Review] SE-0054: Abolish ImplicitlyUnwrappedOptional type

Patrick Gili gili.patrick.r at gili-labs.com
Sat Mar 26 13:30:17 CDT 2016

> 	* What is your evaluation of the proposal?

The IUO is not a transitional technology, as it is essential to bridge from languages from which Swift evolved, such as C and Objective-C. The proposal doesn't give much consideration to this application of IUOs, and hence, I cannot support the proposal in its current state.

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

Grant it, the use of IUO outside of bridging is strange and probably a poor practice. However, there seems to exist a requirement and this proposal would make satisfying this requirement more difficult.

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


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

Not applicable.

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

In-depth study.

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