<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=""><div><br class=""><blockquote type="cite" class=""><div class=""><div dir="auto" class=""><div class=""><div class=""><blockquote type="cite" 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;" class=""><div class=""><div class="">When was the last time you you thought "I really wish the author of that library had restricted my options to use it"?</div></div></blockquote><div 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;" class=""><br class=""></div><div 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;" class="">I really wish Objective-C had this feature from the start. I believe there would have been significant benefits to Apple's platforms and ecosystem. The reasons for believing (or not believing) this have been discussed in depth so there isn't a need to rehash them now.</div></div></div></div></div></blockquote></div>I'm not asking for reasons but for a single persuasive example…<div class=""><br class=""></div><div class="">It is easy to claim that everything will be better if we add restrictions, but so far, I haven't heard of any real problems cause by the current defaults:</div><div class="">The motivation to change them is not because of actual experience, it's just the trendy opinion that inheritance is evil.</div></body></html>