<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="">Not sure where to post this, so starting here. It's a behavior change more than an API change. I'd like to request that try! and try? print errors in debug builds and in the playground. Right now, I use the following work-around.<div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// Replacement for `try?` that introduces printing for</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// error conditions instead of discarding those errors</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">///</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// - Parameter shouldCrash: defaults to false. When set to true</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// will raise a fatal error, emulating try! instead of try?</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">///</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// ```swift</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// attempt {</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// let mgr = NSFileManager.defaultManager()</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// try mgr.createDirectoryAtPath(</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// "/Users/notarealuser",</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// withIntermediateDirectories: true,</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// attributes: nil)</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// }</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">/// ```</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class="">///</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">public</span> <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">func</span> attempt<T>(</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> line line: <span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Int</span> = <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">__LINE__</span>,</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> shouldCrash: <span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Bool</span> = <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">false</span>,</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> closure: () <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">throws</span> -> <span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">T</span></div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> ) -> <span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">T</span>?</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class="">{</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">do</span> {</div><p style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; min-height: 21px;" class=""> <br class="webkit-block-placeholder"></p><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> </span>/// Return executes only if closure succeeds</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">return</span> <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">try</span> closure()</div><p style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; min-height: 21px;" class=""> <br class="webkit-block-placeholder"></p><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> } <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">catch</span> {</div><p style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; min-height: 21px;" class=""> <br class="webkit-block-placeholder"></p><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> </span>/// Emulate try! by crashing</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">if</span> shouldCrash {</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> print(<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">"Fatal error on line </span>\<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">(</span>line<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">): </span>\<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">(</span>error<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">)"</span>)</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> fatalError()</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> }</div><p style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; min-height: 21px;" class=""> <br class="webkit-block-placeholder"></p><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo; color: rgb(0, 76, 20);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> </span>/// Force print and return nil like try?</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> print(<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">"Error </span>\<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">(</span>line<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">): </span>\<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">(</span>error<span style="font-variant-ligatures: no-common-ligatures; color: #d12f1b" class="">)"</span>)</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">return</span> <span style="font-variant-ligatures: no-common-ligatures; color: #bb2ca2" class="">nil</span></div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""> }</div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class="">}</div></div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""><br class=""></div><div style="margin: 0px; font-size: 18px; line-height: normal; font-family: Menlo;" class=""><br class=""></div></body></html>