<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Apr 14, 2016, at 9:00 AM, Joe Groff <<a href="mailto:jgroff@apple.com" class="">jgroff@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Alegreya-Regular; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">This is a known bug. Converting arrays of value type to arrays of protocol type is not supported—only class covariance is supported with containers—but the compiler fails to catch some cases.<span class="Apple-converted-space"> </span></span><br style="font-family: Alegreya-Regular; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""></div></blockquote></div><br class=""><div class="">Thanks for the info!</div><div class=""><br class=""></div><div class="">I found that if I use AnyObject instead of Any, it does work correctly. Is that because AnyObject isn’t a protocol? Or because conversion to AnyObject is a ‘magic’ case that uses Obj-C bridging?</div><div class=""><br class=""></div><div class="">My intuition is that [Any] will be more efficient than [AnyObject] for primitive values like numbers, because the AnyObject conversion boxes the value into a heap object, while converting to Any doesn’t. Or is that incorrect?</div><div class=""><br class=""></div><div class="">—Jens</div></body></html>