On 2011-05-02, at 07:18, Aaron W. Hsu wrote: > On Mon, 02 May 2011 06:35:59 -0400, Alaric Snell-Pym > <[email protected]> wrote: > >> Same here. I wasn't suggesting standardising it, merely that for >> implementations that have this concept, a way of providing it across >> ERROR exceptions and more complex hierarchical exceptions would be nice. > > This was discussed extensively, and as yet, while we would all like > something like this, we have not been able to find a way to do it that > accurately reflects current practice well enough for widespread adoption.
I found this recent discussion interesting, but somewhat tangential to my original proposal, which attempted merely to make error handling usable in a WG1 setting. I'm quite happy with the object raised by ERROR being implementation-defined in WG1. Accessing the message and irritants of an error gives you about the level of functionality enjoyed by LOGO programmers 30 years ago: they could catch errors and write out the message produced by an error. I feel comfortable saying that this part of the proposal in no way reflects new language design, but merely long-standing practice. On the subject of (raise 4), I would be dubious of any argument about exception types based upon errno. :) -- vincent _______________________________________________ Scheme-reports mailing list [email protected] http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports
