<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">A groovy closure can have a delegate which replaces `this` as the default receiver. The issue in groovy is that it is not compatible with static compilation, and there is no way to know from the code what is the type of the delegate.<div class=""><br class=""></div><div class=""><div class="">It works great for DSL. It would work great the Swift Package Manager manifest, among other things.</div></div><div class=""><br class=""></div><div class="">It could look like this in swift<br class=""><div class=""><br class=""></div><div class=""><font style="font-size: 11px;" face="Menlo" class=""><span style="color: rgb(53, 86, 138);" class="">protocol</span> Bar {</font></div><div class=""><div style="margin: 0px; line-height: normal;" class=""><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class=""> <span style="color: rgb(53, 86, 138);" class="">var</span> someConfig: <span style="color: rgb(195, 89, 0);" class="">String</span> { <font color="#35568a" class="">get set</font> }</font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class="">}</font></div><div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><font style="font-size: 11px;" face="Menlo" class=""><br class=""></font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class=""><span style="color: rgb(53, 86, 138);" class="">func</span> prepareSomething(setup: <span style="color: rgb(53, 86, 138);" class="">@delegate</span> <span style="color: rgb(195, 89, 0);" class="">Bar</span> -> () -> ()) {</font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class=""><font color="#cf8724" class=""> </font><span style="color: rgb(53, 86, 138);" class="">let</span><font color="#cf8724" class=""> </font>bar<font color="#cf8724" class=""> = </font><span style="color: rgb(195, 89, 0);" class="">BarImplementation</span>()</font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class=""> <span style="color: rgb(207, 135, 36);" class="">// code before</span></font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class=""> setup(bar)()</font></div><div style="margin: 0px; line-height: normal; color: rgb(207, 135, 36);" class=""><font style="font-size: 11px;" face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> </span>// code after</font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class="">}</font></div><div style="margin: 0px; line-height: normal; min-height: 13px;" class=""><font style="font-size: 11px;" face="Menlo" class=""><br class=""></font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class="">prepareSomething { () -> () <span style="color: rgb(53, 86, 138);" class="">in</span></font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class=""> someConfig = <span style="color: rgb(232, 35, 0);" class="">"Hello world"</span></font></div><div style="margin: 0px; line-height: normal;" class=""><font style="font-size: 11px;" face="Menlo" class="">}</font></div><div style="font-family: Menlo; font-size: 11px;" class=""><br class=""></div></div><div class=""><div class="">Where `someConfig` would refer to bar.</div><div class=""><br class=""></div></div><div class="">
<div class="">Pierre</div>
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