<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><blockquote type="cite" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><p style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); 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);" class="">The review of SE-0154 "Provide Custom Collections for Dictionary Keys and Values" begins now and runs through February 22, 2017. The proposal is available here:</p><blockquote style="box-sizing: border-box; margin: 0px 0px 16px; padding: 0px 1em; color: rgb(119, 119, 119); border-left-width: 0.25em; border-left-style: solid; border-left-color: rgb(221, 221, 221); 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);" class=""><div style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px;" class=""><a href="https://github.com/apple/swift-evolution/blob/master/proposals/0154-dictionary-key-and-value-collections.md" class="">https://github.com/apple/swift-evolution/blob/master/proposals/0154-dictionary-key-and-value-collections.md</a></div></blockquote><p style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); 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);" class=""><br class=""></p></div></blockquote><span class="">I haven’t followed the discussion too closely, so I’m sorry if this has already been answered:</span></div><div>What’s the rationale for selecting this proposal over the alternatives?</div><div>Especially with the upcoming Ownership Manifesto, value mutation may be solved much more easily.</div><div>Should we invest some more time into exploring the `modify` declaration for dictionaries?</div><div><br class=""></div><div>— Martin</div></body></html>