Date: Thu, 1 Apr 2010 18:02:01 -0700 From: Joe Marshall <[email protected]>
It is simply a way of adding a little in-band meta-information about the file. It can't be a scheme form because evaluation of forms happens after reading is finished. It *could* be a funny reader token, but there are no portable ways to add funny reader tokens that don't cause other scheme systems to gag. A comment has the advantage that it shouldn't interfere with other scheme systems. What are you planning on doing with the objects represented in the file after you have read it into a Scheme system that doesn't know about the attribute line? Either you intend to depend on the self- evaluating nature of a subset of symbols, in which case the Scheme system will gag anyway; or you don't, in which case there's no need to write the attribute line at all. _______________________________________________ MIT-Scheme-devel mailing list [email protected] http://lists.gnu.org/mailman/listinfo/mit-scheme-devel
