<div dir="ltr">Yes, and I don't know if there is any particular reason why the == operator for Int doesn't have @warn_unused_result while the one for Doubles has:<div><br><div><div>func f() { 1 == 2 } // OK</div><div>func g() { 1.0 == 2.0 } // Warning: Result of call '==' is unused</div><div><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 14, 2015 at 7:40 PM, Johan Jensen <span dir="ltr"><<a href="mailto:jj@johanjensen.dk" target="_blank">jj@johanjensen.dk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Because currently only unused variable/constant declarations have warnings/fix-its attached to them.<br></div>There have been some discussion on making <a href="https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151207/001580.html" target="_blank">non-void functions warn of unused results</a> and it’s possible that this would be in style with that.<br>Perhaps (basically) empty statements should also give a warning?<br><br></div>—Johan<br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Mon, Dec 14, 2015 at 7:08 PM, Jens Persson via swift-dev <span dir="ltr"><<a href="mailto:swift-dev@swift.org" target="_blank">swift-dev@swift.org</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div><div>func ok() {</div><div> let s = "see"; "Why are there exactly "</div><div> 0 == 0 * 42</div><div> "warnings and errors in this code"</div><div> let t = s + "?"</div><div> print(t)</div><div>}</div><div>ok() // see?</div><div><br></div></div>
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