<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="">I think it's a bad idea because current model (with no optional methods) encourages decomposing protocols into smaller ones, thus discouraging partial functions and making our code safer and more predictable.<div class=""><br class=""></div><div class="">In my opinion, right now, if you really need an optional protocol method, consider adding a default implementation for it. You'd be surprised how often it's enough to satisfy the need for an optional method.<br class=""><div class=""><br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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=""><font color="#929292" class=""><br class="Apple-interchange-newline">Regards,</font></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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=""><font color="#929292" class="">Adrian Kashivskyy</font></div>
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<br class=""><div><blockquote type="cite" class=""><div class="">Wiadomość napisana przez Yuval Tal via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> w dniu 30.03.2016, o godz. 16:08:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi,<div class=""><br class=""></div><div class="">I find that optional protocol methods to be very useful. However, there is a caveat -- it needs to be mapped to @objc. This puts a set of limitations, such as: structures cannot be used as parameters as it does not map to objective-c. What do you think about removing the requirement of using @objc and allow to create optional methods without these limitations?</div><div class=""><br class=""></div><div class="">Thank you,</div><div class=""><br class=""></div><div class="">-Yuval</div></div>
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