<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div><br></div><div><br>Am 21.08.2017 um 22:32 schrieb Brent Royal-Gordon via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>>:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html charset=us-ascii"><div><blockquote type="cite" class=""><div class="">On Aug 21, 2017, at 12:41 PM, Wallacy via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Based on these same concerns, how to do this using async/await ?</span><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; 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; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><pre style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; font-stretch: normal; line-height: 1.45; word-wrap: normal; padding: 16px; overflow: auto; background-color: rgb(246, 248, 250); border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px; word-break: normal; font-size: 13.6px; font-family: SFMono-Regular, Consolas, 'Liberation Mono', Menlo, Courier, monospace; color: rgb(36, 41, 46);" class=""><span class="m_-7553367014148691918inbox-inbox-inbox-inbox-pl-k" style="box-sizing: border-box; color: rgb(215, 58, 73);">func</span> <span class="m_-7553367014148691918inbox-inbox-inbox-inbox-pl-en" style="box-sizing: border-box; color: rgb(111, 66, 193);">process</span>() <span class="m_-7553367014148691918inbox-inbox-inbox-inbox-pl-k" style="box-sizing: border-box; color: rgb(215, 58, 73);">-></span> <span class="m_-7553367014148691918inbox-inbox-inbox-inbox-pl-c1" style="box-sizing: border-box; color: rgb(0, 92, 197);">Void</span>) {</pre><pre style="box-sizing: border-box; font-family: SFMono-Regular, Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 13.6px; margin-top: 0px; margin-bottom: 0px; font-stretch: normal; line-height: 1.45; word-wrap: normal; padding: 16px; overflow: auto; background-color: rgb(246, 248, 250); border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px; word-break: normal;" class=""> loadWebResource("bigData.txt") { dataResource in
//....
}</pre><pre style="box-sizing: border-box; font-family: SFMono-Regular, Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 13.6px; margin-top: 0px; margin-bottom: 0px; font-stretch: normal; line-height: 1.45; word-wrap: normal; padding: 16px; overflow: auto; background-color: rgb(246, 248, 250); border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px; word-break: normal;" class=""> printf("BigData Scheduled to load")
loadWebResource("smallData.txt") { dataResource in
//....
}
printf("SmallData Scheduled to load")<br class=""><font color="#24292e" class="">
}</font></pre></div></div></blockquote></div><div class=""><br class=""></div><div class="">You would use something like the `Future` type mentioned in the proposal:</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>func process() {</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>let bigDataFuture = Future { await loadWebResource("bigData.txt") }</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>print("BigData scheduled to load")</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>let smallDataFuture = Future { await loadWebResource("smallData.txt") }</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>print("SmallData scheduled to load")</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>let bigDataResource = await bigDataFuture.get()</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>let smallDataResource = await smallDataFuture.get()</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>// or whatever; you could probably chain off the futures to handle whichever happens first first.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>...</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>}</div></div></blockquote><div><br></div><div>Like others have already proposed I would imagine to be able to write something like this (adding a return type to do something with the data).</div><div><br></div><div>func process() async -> (Data, Data) {</div><div> <span style="background-color: rgba(255, 255, 255, 0);">let bigData = async loadWebResource("bigData.txt") </span></div><div><span style="background-color: rgba(255, 255, 255, 0);"> print("BigData scheduled to load")</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"> let bigData = async loadWebResource("bigData.txt") </span></div> <span style="background-color: rgba(255, 255, 255, 0);">print("SmallData scheduled to load")</span><div> return await (bigData, smallData)</div><div>}</div><div><br></div><div>where bigData and smallData have the type `async Data` which has </div><div>to be `await`ed upon to get at the `Data`.</div><div><br></div><div>-Thorsten</div><div><br></div><div><br><blockquote type="cite"><div><br class=""><div class="">
<span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-spacing: 0px;"><div class=""><div style="font-size: 12px; " class="">-- </div><div style="font-size: 12px; " class="">Brent Royal-Gordon</div><div style="font-size: 12px; " class="">Architechies</div></div></span>
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