<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="">Matthew, I actually like your idea better than using an opposite "@suppress_unused_result" attribute. In addition, it will even be easier to implement, since "let _" syntax is already supported in the language.<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">Pozdrawiam – 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 Matthew Johnson <<a href="mailto:matthew@anandabits.com" class="">matthew@anandabits.com</a>> w dniu 11.12.2015, o godz. 00:28:</div><br class="Apple-interchange-newline"><div class=""><div class="">Why should unused results be acceptable? Why not require callers to explicitly throw away the result:<br class=""><br class="">let _ = funcReturningValueThatIsIgnored()<br class=""><br class="">Yes this is extra syntax, but it also makes it clear that the value was intended to be ignored and the function was only executed for side-effects. <br class=""><br class=""><blockquote type="cite" class="">On Dec 10, 2015, at 5:23 PM, Guillaume Lessard via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""><br class=""><br class=""><blockquote type="cite" class="">On 10 déc. 2015, at 15:58, Adrian Kashivskyy via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""><br class="">I think non-void functions should warn about their return value being unused by default, thus eliminating the need to attribute them with @warn_unused_result.<br class=""></blockquote><br class="">I strongly don’t like this idea. This being said, if it happens ann attribute that says "unused result are acceptable" must be created. Makes me wince.<br class=""><br class="">Guillaume Lessard<br class=""><br class="">_______________________________________________<br class="">swift-evolution mailing list<br class=""><a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a><br class="">https://lists.swift.org/mailman/listinfo/swift-evolution<br class=""></blockquote><br class=""></div></div></blockquote></div><br class=""></body></html>