<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.6000.16608" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>I am sorry, but I don't quite understand your post. What is the question? What sort of ideas are you thinking of?</FONT></DIV> <DIV><FONT face=Arial size=2>Jos</FONT></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=frijam27@yahoo.com href="mailto:frijam27@yahoo.com">james firman</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=plt-scheme@list.cs.brown.edu href="mailto:plt-scheme@list.cs.brown.edu">plt-scheme@list.cs.brown.edu</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, March 06, 2008 1:28 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> [plt-scheme] any idea on this please </DIV> <DIV><BR></DIV>sir Good Day :<BR><BR>PLT Schemes<BR>i used this utility functions i used it to manipulate the stream such as map and filter.<BR><BR>> ( define (inc x) (+ 1 x))<BR>>(define int (make-stream 0 inc )<BR>>(define sqr x ))<BR>> (stream-print (stream-map int sqr) 10)<BR>   ( 0 1 4 9 16 25 36 49 64 81 ) ...... output<BR>>( stream-print (stream-filter int odd?) 15 )<BR>( 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29)<BR><BR>i have to used the utility functions below <BR><BR>1. (stream-map stream op)<BR>2.(stream-filter stream ok? )<BR><BR>" i used the accessor stream-current and stream-next to access the succeeding stream.<BR><BR><BR>Thanks a lot i hope you give us ideas on this :)<BR><BR>More Power ...... <BR> <P> <HR SIZE=1> Never miss a thing. <A href="http://us.rd.yahoo.com/evt=51438/*http://www.yahoo.com/r/hs">Make Yahoo your homepage.</A> <P> <HR> <P></P>_________________________________________________<BR>  For list-related administrative tasks:<BR>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme<BR></BLOCKQUOTE></BODY></HTML>