Proposal Link:
https://github.com/apple/swift-evolution/blob/master/proposals/0163-string-revision-1.md
<https://github.com/apple/swift-evolution/blob/master/proposals/0163-string-revision-1.md>
Hello Swift Community,
The review of SE-0163 "Improve Interaction Between `private` Declarations and
Extensions” ran from April 5th through 11th, 2017. The proposal is accepted
with revisions.
Feedback from the community was positive. There was a question during the
discussion about how best to construct a String from an array of characters
that may or may not be NUL-terminated. Upon reflection, the proposal authors
decided that it would best if String provided an initializer that took a
collection of code units; feedback on that idea was also positive. The
proposal authors also decided that it would be best if strings could be easily
converted to a C string with an arbitrary encoding; this was not discussed
during the review, but the core team felt that this was obvious enough and
sufficiently similar to other API that it did not demand an additional formal
review period. Accordingly, this proposal has been accepted with the following
two revisions:
1. String will also add the following initializer:
/// Constructs a `String` having the same contents as `codeUnits`.
///
/// - Parameter codeUnits: a collection of code units in
/// the given `encoding`.
/// - Parameter encoding: describes the encoding in which the code units
/// should be interpreted.
init<C: Collection, Encoding: UnicodeEncoding>(codeUnits: C, encoding:
Encoding)
2. String will also add the following method, analogous to the withCString
method that has already been proposed:
/// Invokes the given closure on the contents of the string, represented as a
/// pointer to a null-terminated sequence of code units in the given encoding.
func withCString<Result, Encoding: UnicodeEncoding>(encoding: Encoding,
_ body: (UnsafePointer<Encoding.CodeUnit>) throws -> Result) rethrows ->
Result
John McCall
Review Manager_______________________________________________
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