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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">AH! I get it now. The ‘auto’/’const auto’/’auto&’ actually applies to an unnamed Structured Binding object, not as a qualifier to the individual items. A structured
binding is more akin to a named tuple rather than introducing values.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I missed that mental model, thank you very much!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-Erich<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></a></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> James Dennett [mailto:james.dennett@gmail.com]
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<b>Sent:</b> Wednesday, March 22, 2017 1:09 PM<br>
<b>To:</b> Keane, Erich <erich.keane@intel.com><br>
<b>Cc:</b> cfe-dev <cfe-dev@lists.llvm.org><br>
<b>Subject:</b> Re: [cfe-dev] Structured bindings seem to allow non-const references to a bitfield<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Mar 22, 2017 at 12:38 PM, Keane, Erich <<a href="mailto:erich.keane@intel.com" target="_blank">erich.keane@intel.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Ok, I guess I didn’t (don’t completely?) ‘get’ that there is a difference between “structured binding
alias” and “reference”. Additionally, if you simply do “auto”, you get copies, right?</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">You get (at most) one copy, of the value that's being decomposed, and it is unnamed.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- James<o:p></o:p></p>
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