<div dir="ltr">2017-09-06 0:20 GMT+07:00 Jordan Rose via swift-users <span dir="ltr"><<a href="mailto:swift-users@swift.org" target="_blank">swift-users@swift.org</a>></span>:<br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word;line-break:after-white-space"><span class=""><div><br></div></span><div>Unfortunately this will only work for pure Swift apps; the support libraries for Foundation, UIKit, etc are built against the Xcode 9 SDKs and will not work with Xcode 8. I'm afraid you're stuck with Swift 3 if you want to make Cocoa or Cocoa Touch apps, at least officially.</div></div></blockquote><div><br></div><div></div></div><div>That's very unfortunate indeed. I'm just starting to write a book about Swift and programming on Apple platforms (not just iOS) since a few weeks ago, I think it'd be better if I use Swift 4 and XCode 9 as the reference for the book since it's the newest version with a bunch of new features, instead of using the about-to-get-old Swift 3 and XCode 8.</div><div><br></div><div>Well, I think I need to postpone the book until I got a new Mac (which is uncertain). Actually, I plan to buy a new Mac from the sale of the book. So, obviously I need a new strategy. :)</div><div><br></div><div>Thank you.</div><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><br><div><div>Regards,</div><div><br></div><div><br></div><div>–Mr Bee</div></div></div></div>
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