https://github.com/apple/swift-evolution/blob/b159d48bf5a05e5dcfa83e2e7dbb2f64c15ada27/proposals/0184-improved-pointers.md

apple/swift-evolution

swift-evolution - This maintains proposals for changes and user-visible enhancements to the Swift Programming Language.

10:01 AM

これの Detailed Designのところ (edited)

10:02 AM

--- func withMemoryRebound<T, Result>(to:T.Type, count:Int, _ body:(UnsafeMutablePointer<T>) -> Result) +++ func withMemoryRebound<T, Result>(to:T.Type, count:Int = 1, _ body:(UnsafeMutablePointer<T>) -> Result)

(edited)

10:02 AM

デフォルト1が付け足されるらしい。

10:02 AM

いや、逆かな？最初はcountがなくて、ドキュメントが書かれて、途中でcountが増えて、これで改めてdefault = 1になったのかも？