<div dir="ltr">Most of the proposal looks fine to me. A welcome feature. Eager to see anyone's ideas for further extension to the range DSL—perhaps this will spark people's imaginations <a href="http://matt.might.net/articles/parsing-with-derivatives/">http://matt.might.net/articles/parsing-with-derivatives/</a><div><br></div><div>My only comment is concern over leaving out ..< It's not the prettiest operator, true, but in the name of consistency and the "principle of least surprise" I think it's the right one to use. I'm trying to imagine explaining this to someone learning Swift—"... means up to and including (except when it doesn't.)" Sounds like a mini-nightmare to me.</div><div><br></div><div>Cheers,</div><div>-Colin</div><div><br><div class="gmail_quote"><div dir="ltr">On Tue, Apr 18, 2017 at 12:40 AM Douglas Gregor via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">Hello Swift community,</p><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">The review of SE-0172 "One-sided Ranges" begins now and runs through April 23, 2017. The proposal is available here:</p><blockquote style="box-sizing:border-box;margin:0px 0px 16px;padding:0px 1em;border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229);background-color:rgb(255,255,255)"><div style="box-sizing:border-box;margin-top:0px;margin-bottom:0px"><font color="#6a737d" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="3"><a href="https://github.com/apple/swift-evolution/blob/master/proposals/0172-one-sided-ranges.md" target="_blank">https://github.com/apple/swift-evolution/blob/master/proposals/0172-one-sided-ranges.md</a></font></div></blockquote><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">Reviews are an important part of the Swift evolution process. All reviews should be sent to the swift-evolution mailing list at</p><blockquote style="box-sizing:border-box;margin:0px 0px 16px;padding:0px 1em;color:rgb(106,115,125);border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)"><div style="box-sizing:border-box;margin-top:0px;margin-bottom:0px"><a href="https://lists.swift.org/mailman/listinfo/swift-evolution" style="box-sizing:border-box;background-color:transparent;color:rgb(3,102,214);text-decoration:none" target="_blank">https://lists.swift.org/mailman/listinfo/swift-evolution</a></div></blockquote><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">or, if you would like to keep your feedback private, directly to the review manager. When replying, please try to keep the proposal link at the top of the message:</p><blockquote style="box-sizing:border-box;margin:0px 0px 16px;padding:0px 1em;border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229);background-color:rgb(255,255,255)"><p style="color:rgb(106,115,125);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;box-sizing:border-box;margin-top:0px;margin-bottom:16px">Proposal link:</p><blockquote style="box-sizing:border-box;margin:0px;padding:0px 1em;border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229)"><div style="box-sizing:border-box;margin-top:0px;margin-bottom:0px"><font color="#6a737d" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="3"><a href="https://github.com/apple/swift-evolution/blob/master/proposals/0172-one-sided-ranges.md" target="_blank">https://github.com/apple/swift-evolution/blob/master/proposals/0172-one-sided-ranges.md</a></font></div></blockquote></blockquote><blockquote style="box-sizing:border-box;margin:0px 0px 16px;padding:0px 1em;color:rgb(106,115,125);border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)"><div style="box-sizing:border-box;margin-top:0px;margin-bottom:0px">Reply text</div></blockquote><blockquote style="box-sizing:border-box;margin:0px 0px 16px;padding:0px 1em;color:rgb(106,115,125);border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)"><blockquote style="box-sizing:border-box;margin:0px;padding:0px 1em;border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229)"><div style="box-sizing:border-box;margin-top:0px;margin-bottom:0px">Other replies</div></blockquote></blockquote><h5 style="box-sizing:border-box;margin-top:24px;margin-bottom:16px;font-size:0.875em;line-height:1.25;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';background-color:rgb(255,255,255)"><a id="m_-1129599605258338000user-content-what-goes-into-a-review-1" class="m_-1129599605258338000anchor" href="https://github.com/apple/swift-evolution/pulls#what-goes-into-a-review-1" style="box-sizing:border-box;background-color:transparent;color:rgb(3,102,214);text-decoration:none;float:left;padding-right:4px;line-height:1" target="_blank"><u></u><u></u><u></u><u></u></a>What goes into a review?</h5><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">The goal of the review process is to improve the proposal under review through constructive criticism and, eventually, determine the direction of Swift. When writing your review, here are some questions you might want to answer in your review:</p><ul style="box-sizing:border-box;padding-left:2em;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)"><li style="box-sizing:border-box">What is your evaluation of the proposal?</li><li style="box-sizing:border-box;margin-top:0.25em">Is the problem being addressed significant enough to warrant a change to Swift?</li><li style="box-sizing:border-box;margin-top:0.25em">Does this proposal fit well with the feel and direction of Swift?</li><li style="box-sizing:border-box;margin-top:0.25em">If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?</li><li style="box-sizing:border-box;margin-top:0.25em">How much effort did you put into your review? A glance, a quick reading, or an in-depth study?</li></ul><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">More information about the Swift evolution process is available at</p><blockquote style="box-sizing:border-box;margin:0px 0px 16px;padding:0px 1em;color:rgb(106,115,125);border-left-width:0.25em;border-left-style:solid;border-left-color:rgb(223,226,229);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)"><div style="box-sizing:border-box;margin-top:0px;margin-bottom:0px"><a href="https://github.com/apple/swift-evolution/blob/master/process.md" style="box-sizing:border-box;background-color:transparent;color:rgb(3,102,214);text-decoration:none" target="_blank">https://github.com/apple/swift-evolution/blob/master/process.md</a></div></blockquote><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">Thank you,</p><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">-Doug</p><p style="box-sizing:border-box;margin-top:0px;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:16px;background-color:rgb(255,255,255)">Review Manager</p></div>_______________________________________________<br>
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