Heya Ludo, Ping :) You still against changes to define-module? I'm OK with that, but I just wanted to get an explicit reaction. Too much mail over the last month, eh :-)
Andy On Tue 06 Dec 2011 12:30, Andy Wingo <wi...@pobox.com> writes: > On Thu 10 Nov 2011 00:50, l...@gnu.org (Ludovic Courtès) writes: > >> Andy Wingo <wi...@pobox.com> skribis: >> >>> On Thu 28 Jul 2011 23:23, l...@gnu.org (Ludovic Courtès) writes: >>> >>>> Andy Wingo <wi...@pobox.com> skribis: >>>> >>>>> (define-module (foo) >>>>> #:import ((bar) >>>>> (only (baz) qux foo) >>>>> ...)) >>>>> >>>>> Or even: >>>>> >>>>> (define-module (foo) >>>>> (import (bar) >>>>> (only (baz) qux foo) >>>>> ...)) >>>> >>>> I’d prefer #:use-modules (plural), for consistency: >>>> >>>> (define-module (foo) >>>> #:use-modules ((bar) >>>> (baz) #:select (qux foo) >>>> (chbouib) #:renamer (symbol-prefix-proc 'p))) >>> >>> I don't like the paren placement so much. Consistency is important, but >>> TBH I think that we should phase out the "use-module" / "use-modules" >>> terminology, in favor of "import" terminology of r6rs and the coming >>> r7rs. >> >> I find aesthetics important, but phasing out such an important construct >> “just” for aesthetics seems harsh to me. > > Yeah, but it is not simply aesthetics: it is consistency with other > schemes, `import' is the natural converse of `export', and the important > cases of "import only these bindings", "rename these particular > bindings", and "import this module with a prefix" are really easy in the > r6rs import language. > >> Besides, stuff like #:renamer is strictly more powerful than what >> R[67]RS provide, IIRC. > > No argument there! But I rarely use it. Even #:select is a bit of a > PITA to use: > > #:use-module ((a) #:select (b c d)) > #:use-module ((e) #:renamer (symbol-prefix-proc 'p:)) > > vs > > (import (only (a) b c d) > (prefix (e) p:)) > > In particular the #:use-module variant has non-obvious paren placement > for #:select two places: the wrapper for the whole form, and the list of > bindings. And of course #:renamer would still be there for you to > use. if you wanted to. > > Dunno, I still think this would be a good idea, but I think we would > need to come to agreement first. > > Andy -- http://wingolog.org/
