<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="">On 16 Feb 2017, at 18:58, Saagar Jha <<a href="mailto:saagar@saagarjha.com" class="">saagar@saagarjha.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 14px; 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; float: none; display: inline !important;" class="">DispatchTimeInterval.nanoseconds expects an Int, while uptimeNanoseconds is an UInt64 (an thus so is their difference). You can “fix” this by adding an explicit cast:</span><br class="Apple-interchange-newline"></div></blockquote><br class=""></div><div>Aha! So this was just a confusing compiler message.</div><div>Thanks.</div><div><br class=""></div><div>Jan E.</div><br class=""></body></html>