<div style="font-family:Verdana;font-size:14px;color:#000;"><DIV>The mutable pairs and lists work something like pointers in C,does  a mutable list works faster than a immutable one,generally? </DIV><div style="font:Verdana normal 14px;color:#000;"><div> </div><div> </div><div style="FONT-SIZE: 12px;FONT-FAMILY: Arial Narrow;padding:2px 0 2px 0;">------------------ Original ------------------</div><div style="FONT-SIZE: 12px;"><div><b>From:</b> "Neil Van Dyke"<neil@neilvandyke.org>;</div><div><b>Date:</b> 2009年10月15日(星期四) 下午4:13</div><div><b>To:</b> "Scott McLoughlin"<scott@adrenaline.com>; "PLT"<plt-scheme@list.cs.brown.edu>;</div><div><b>Subject:</b> Re: [plt-scheme] Questions on PLT status and project structure</div></div><div> </div>I've been involved in (what's now called) open source for a couple <br>decades, and have been using PLT Scheme for close to 8 years.<br><br>I think that PLT's development model has been working out very well.<br><br>At this time, I have more confidence in the existing model than I would <br>in a divvying-up of pieces of PLT Scheme among some network of community <br>members.<br><br>For random community members, like myself, writing PLaneT packages is a <br>no-brainer great way to contribute.  Bug reports and feature <br>suggestions, and even small patches, too.<br><br>Nothing precludes very smart community members someday taking up core <br>PLT development, such as in the event of all existing PLT developers <br>signing up to be astronauts on the Mars mission.  But until that time, I <br>wouldn't want PLT to mess too much with a winning formula.<br><br>-- <br>http://www.neilvandyke.org/<br><br>_________________________________________________<br>  For list-related administrative tasks:<br>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme<br></div></div>