<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=""><blockquote type="cite" class="">On Dec 12, 2016, at 2:12 PM, Charles Srstka via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""></blockquote><div><blockquote type="cite" class=""><br class="Apple-interchange-newline"><div class=""><div class="" style="font-family: Helvetica; font-size: 12px; 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;">print((c as AnyObject?)?.bar() as Any) // Optional(6)</div><div class="" style="font-family: Helvetica; font-size: 12px; 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;">print((s as AnyObject?)?.bar() as Any) // crash! -[_SwiftValue bar]: unrecognized selector sent to instance 0x5432109876543210</div></div></blockquote></div><br class=""><div class="">All right, immediately after sending this, I realized what was wrong with this; bar() should have been bar?(). If the question mark is added, the last line returns nil instead of crashing. The rest of my questions still stand, and we can add to the list why the above doesn’t raise a compiler warning.</div><div class=""><br class=""></div><div class="">Charles</div><div class=""><br class=""></div></body></html>