<div>Unfortunately, I think this proposal appears to be mistaken as to this key premise: Void was never (IIUC) meant to model the absence of arguments; it is a type with one possible value.<br><br>If I recall, a number of conversations have been raised about Void being a typealias of (), and the definitive response has been that this falls into the ship-has-sailed category of out-of-scope changes.<br><br>More generally, the recent spate of complaints about regressions to a particular coding style have to do with loss of implicit tuple splatting, the cure for which is a proper implementation of tuple splatting, not poking holes into settled parts of the type system.</div><div><br></div><div><br><div class="gmail_quote"><div>On Mon, Jun 12, 2017 at 12:15 John McCall via swift-evolution <<a href="mailto:swift-evolution@swift.org" target="_blank">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"><br><div><blockquote type="cite"><div>On Jun 12, 2017, at 4:48 AM, Jérémie Girault via swift-evolution <<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>> wrote:</div><br class="m_7884169765734884326m_-2000047954192297274Apple-interchange-newline"><div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px">Hi here,</div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px"><br></div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px">As I tested swift4 in xcode9b1 I noticed a lot of regressions about tuples usage.</div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px"><br></div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px">After documenting myself about the changes which happened, I thought that they could be improved. Instead of fighting these propositions (which make sense), I wanted create a few proposal which would improve these recent changes with a few simple rules.</div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px"><br></div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px">My propositions are based on the recent decisions and in the continuation of SE-0110. The first one is about Void.</div><div id="m_7884169765734884326m_-2000047954192297274bloop_customfont" style="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;margin:0px">Void is historically defined as the type of the empty tuple. The reason of this is that arguments were initially considered as tuple.</div></div></blockquote><br></div></div><div style="word-wrap:break-word"><div>The dominant consideration here was always return types, not parameters. I'm not sure there was ever much point in writing Void in a parameter list, but whatever reasons there were surely vanished with SE-0066.</div><div><br></div><div>Note that 'void' in C was originally exclusively a return type. ANSI gave it a new purpose it with void*, but the meaning is totally unrelated.</div></div><div style="word-wrap:break-word"><div><br></div><div>John.</div></div>_______________________________________________<br>
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