Intersting discussion, thanks. Was able to fix a bug thanks to you. On Sat, Jul 11, 2020 at 12:14 PM Chris Vine <vine35792...@gmail.com> wrote:
> On Sat, 11 Jul 2020 02:34:22 +0200 > Zelphir Kaltstahl <zelphirkaltst...@posteo.de> wrote: > > The comments about exception handling also reminded me of the following > > blog post: > > > > https://blog.sulami.xyz/posts/common-lisp-restarts/ > > > > Pretty cool concept as well. > > > > If there anything like it in Guile or is something like it possible > > (probably, right?)? > > I think common lisp restarts are by and large useless. They rely on > the assumption that the caller of a procedure which throws knows better > how to handle an exception arising in that procedure than the procedure > itself. That is rarely the case. Usually the code at the site of the > error should do what it can to remedy the problem and then (if it cannot > be fully rectified) throw an exception which unwinds the stack, for the > exception to be picked up elsewhere. > > That is how most exception systems work. Scheme's continuable > exceptions are analogous to restarts (albeit only having the exception > site as their destination) and suffer from the same problem in my > view. The only place I have seen restarts used in action are in > building REPLs. > >
