[swift-evolution] [Review #2] SE-0089: Renaming String.init<T>(_: T)

Vladimir.S svabox at gmail.com
Mon Jun 6 09:42:59 CDT 2016

The question regarding FloatingPoint.

Now we have:
var float = 1.0/3.0
var s = "\(float)"
print(s) // 0.333333333333333

What we'll have after the proposal implemented?

As stated in proposal: Standard library types to conform -> The following 
standard library types and protocols should be changed to conform to 
LosslessStringConvertible -> "FP types should be able to conform. There are 
algorithms that are guaranteed to turn IEEE floating point values into a 
decimal representation in a reversible way. I don’t think we care about NaN 
payloads, but an encoding could be created for them as well."

So, are we going to change what representation the float value will have as 
result of string interpolation? If so, how to 'get' this old plain 
"0.333333333333333" ?

On 04.06.2016 21:24, Chris Lattner via swift-evolution wrote:
> Hello Swift community,
> The review of the revised proposal SE-0089: "Renaming String.init<T>(_: T)" begins now and runs through June 7. The proposal is available here:
> 	https://github.com/apple/swift-evolution/blob/master/proposals/0089-rename-string-reflection-init.md
> Reviews are an important part of the Swift evolution process. All reviews should be sent to the swift-evolution mailing list at
> 	https://lists.swift.org/mailman/listinfo/swift-evolution
> or, if you would like to keep your feedback private, directly to the review manager.
> What goes into a review?
> The goal of the review process is to improve the proposal under review through constructive criticism and contribute to the direction of Swift. When writing your review, here are some questions you might want to answer in your review:
> 	* What is your evaluation of the proposal?
> 	* Is the problem being addressed significant enough to warrant a change to Swift?
> 	* Does this proposal fit well with the feel and direction of Swift?
> 	* If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?
> 	* How much effort did you put into your review? A glance, a quick reading, or an in-depth study?
> More information about the Swift evolution process is available at
> 	https://github.com/apple/swift-evolution/blob/master/process.md
> Thank you,
> -Chris Lattner
> Review Manager
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