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The Reference discusses mutable pairs and mutable lists. I came across this looking for set-car! and set-cdr! Apparently, they are not there, but there is a set-mcar! and set-mcdr! for mutable lists - or so I thought<div><br></div><div><div>> (require scheme/mlist)</div><div>open-input-file: cannot open input file: "/Applications/PLT Scheme v4.0.2/collects/scheme/mlist.ss" (No such file or directory; errno=2)</div><div><br></div><div><br></div>Is this module obsolete, or am I missing a file?</div><div><br></div><div>At any rate, shared bindings do seem to offer the same kind of capabilities, so I'm not worried about this. I just wonder if the documentation is out of date or if I'm missing a file.<br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><br class="Apple-interchange-newline"><br class="khtml-block-placeholder"></div><div>"You can't win if you don't finish the race."</div><div>--Richard Petty</div><div><br></div><div><a href="http://www.gwoodhouse.com">http://www.gwoodhouse.com</a></div><div><a href="http://GregWoodhouse.ImageKind.com">http://GregWoodhouse.ImageKind.com</a></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline"></span> </div><br></div></body></html>