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.send { color:#77bb77; }
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.error { color:#AA0000; }</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class="bloop_markdown"><p>At first glance, this makes totally sense to me, feel free to push this idea on the main discussion thread about this dilemma. :)</p>
<p></p></div><div class="bloop_original_html"><style>body{font-family:Helvetica,Arial;font-size:13px}</style><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div> <br> <div id="bloop_sign_1496945308669507072" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px">-- <br>Adrian Zubarev<br>Sent with Airmail</div></div> <br><p class="airmail_on">Am 8. Juni 2017 um 19:41:03, Brent Royal-Gordon (<a href="mailto:brent@architechies.com">brent@architechies.com</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div></div><div>
<title></title>
<div>
<blockquote type="cite" class="">
<div class="">On Jun 7, 2017, at 3:03 AM, Adrian Zubarev 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="">
<p style="margin: 15px 0px; -webkit-margin-before: 0px; font-family: Helvetica, Arial; font-size: 13px; 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="">Well please no:</p>
<p style="margin: 15px 0px; font-family: Helvetica, Arial; font-size: 13px; 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="">
<code style="font-family: Menlo, Consolas, 'Liberation Mono', Courier, monospace; font-size: 10pt; border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px; background-color: rgb(248, 248, 248); color: inherit; border: 1px solid rgb(234, 234, 234); margin: 0px 2px; padding: 0px 5px; word-break: normal; word-wrap: normal; -webkit-margin-before: 0px;" class=""><span class="Apple-converted-space"> </span>let fn2:
((Int, Int)) -> Void = { lhs, rhs in }<span class="Apple-converted-space"> </span></code></p>
<p style="margin: 15px 0px; font-family: Helvetica, Arial; font-size: 13px; 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="">Instead use destructuring sugar pitched by Chris Lattner
on the other thread:</p>
<p style="margin: 15px 0px; font-family: Helvetica, Arial; font-size: 13px; 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=""><code style="font-family: Menlo, Consolas, 'Liberation Mono', Courier, monospace; font-size: 10pt; border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px; background-color: rgb(248, 248, 248); color: inherit; border: 1px solid rgb(234, 234, 234); margin: 0px 2px; padding: 0px 5px; word-break: normal; word-wrap: normal; -webkit-margin-before: 0px;" class="">let fn2: ((Int, Int)) -> Void = { ((lhs, rhs)) in
}</code></p>
</div>
</blockquote>
</div>
<div class="">I think this suggestion is better than the status
quo. I'm wondering, though, if we should just drop the outer set of
parentheses entirely, unless you're also putting types on the
parameters. That is, a closure of type `(Int, Int) -> T` can
look like this:</div>
<div class=""><br class=""></div>
<div class="">{ (x: Int, y: Int) in … }</div>
<div class=""><br class=""></div>
<div class="">Or it can look like this:</div>
<div class=""><br class=""></div>
<div class="">{ x, y in … }</div>
<div class=""><br class=""></div>
<div class="">But it *cannot* look like this:</div>
<div class=""><br class=""></div>
<div class="">{ (x, y) in … }</div>
<div class=""><br class=""></div>
<div class="">The `(x, y)` form can instead be a closure of a type
like `((Int, Int)) -> T`, which immediately destructures the
tuple parameter into separate constants.</div>
<br class="">
<div class="">
<div class="">
<div style="font-size: 12px;" class=""><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px;">
-- </span></div>
<div style="font-size: 12px;" class=""><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px;">
Brent Royal-Gordon</span></div>
<div style="font-size: 12px;" class=""><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px;">
Architechies</span></div>
</div>
</div>
<br class="">
</div></div></span></blockquote></div><div class="bloop_markdown"><p></p></div></body></html>