<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV><DIV>On Apr 16, 2007, at 16:58, Robby Findler wrote:</DIV><BLOCKQUOTE type="cite"><DIV>I suggest that [YSC] read these two papers to get an idea of the</DIV> <DIV>pragmatics of custodians:</DIV> <DIV><A href="http://www.ccs.neu.edu/scheme/pubs/icfp99-ffkf.pdf">http://www.ccs.neu.edu/scheme/pubs/icfp99-ffkf.pdf</A></DIV> <DIV><A href="http://www.cs.utah.edu/plt/publications/pldi04-ff.pdf">http://www.cs.utah.edu/plt/publications/pldi04-ff.pdf</A></DIV> </BLOCKQUOTE><BR></DIV><DIV>Great papers--they explain so much.  I was looking at the first, and on page 5 saw this:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><FONT class="Apple-style-span" face="Courier">(parameterize ((current-custodian cust))</FONT></DIV><DIV><FONT class="Apple-style-span" face="Courier">  (parameterize ((current-eventspace (make-eventspace)))</FONT></DIV><DIV><FONT class="Apple-style-span" face="Courier">    (queue-callback graphical-tick-loop)))</FONT></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>and wondered why it wasn't in a different [imagined] style, say, like this:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><SPAN class="Apple-style-span">(<FONT class="Apple-style-span" face="Courier">parameterize* ((current-custodian cust)</FONT></SPAN></DIV><DIV><FONT class="Apple-style-span" face="Courier">                (current-eventspace (make-eventspace)))</FONT></DIV><DIV><FONT class="Apple-style-span" face="Courier">  (queue-callback graphical-tick-loop))</FONT></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I looked and saw there's a parameterize* in sandbox.ss.</DIV><DIV><BR class="khtml-block-placeholder"></DIV></BODY></HTML>