Re: Keyword arguments in procedures specified in SRFIs Per Bothner 23 Jul 2019 00:22 UTC
On 7/22/19 1:22 PM, Lassi Kortela wrote: >> As a data type, are keywords a subtype of symbols or disjoint from them? I think they are generally a subtype, but they are disjoint in Chicken. Presumably they are disjoint in Racket and Kawa as well. > Kawa: > > (keyword? '#:foo) => #t > (symbol? '#:foo) => #t > (symbol->string '#:foo) => "foo:" > 'foo: => foo: > (keyword? 'foo:) => #t > (eqv? 'foo: ':foo) => #f > (eqv? 'foo: '#:foo) => #t > Note that Kawa actually has packages/namespaces: https://www.gnu.org/software/kawa/Namespaces.html These are used for XML-style namespaces, and also Common Lisp packages. Keywords in Kawa are in a separate "keyword namespace", like Common Lisp. -- --Per Bothner xxxxxx@bothner.com http://per.bothner.com/