<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=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: 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="">The key phrase here is “simple form”. We need to translate this into code at</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: 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=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: 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="">some point, no?</span></div></blockquote></div><br class=""><div class="">With „simple form“ I really mean the simplest possible form:</div><div class=""><br class=""></div><div class=""><div class=""> class A {</div><div class=""> <span class="Apple-tab-span" style="white-space:pre"> </span>var myB: B?</div><div class=""> }</div><div class=""><br class=""></div><div class=""> class B {</div><div class=""> var myA: A?</div><div class=""> }</div></div><div class=""><br class=""></div><div class="">So exactly class A and exactly class B. If I understand it correct then the detection of inherited or derived types (or Protocols) would only be possible during runtime.</div><div class=""><br class=""></div></body></html>