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java 2022-12-15
When you need to call a Clojure function from Java, is this the easiest way to do it?
IFn require = Clojure.var("clojure.core", "require");
require.invoke(clojure.lang.Symbol.create("stats-clj.special"));
IFn inc = Clojure.var("stats-clj.special", "gamma");
System.out.println(inc.invoke(5));
Alex Miller (Clojure team) 2022-12-15T13:45:19.618919Z
This is the correct way to do it. What does ‘custom code” mean?
Alex Miller (Clojure team) 2022-12-15T13:52:10.970249Z
With above you can load any namespace and invoke any var
By "custom code" I meant simply loading something outside clojure.core, like the stats-clj.special ns above 🙂 Thanks for confirmation - perhaps it would be a good addition to the .org reference linked above?
Alex Miller (Clojure team) 2022-12-15T14:11:59.999639Z
I don’t understand what’s different that needs to be added
Alex Miller (Clojure team) 2022-12-15T14:12:41.521409Z
It says “Functions in clojure.core are automatically loaded. Other namespaces can be loaded via require:”
Oh I completely missed that example - sorry, all is good then
emccue 2022-12-16T14:40:15.874789Z
technically clojure.lang.Symbol.create is not part of the api
emccue 2022-12-16T14:40:24.905949Z
its just var and IFn
Alex Miller (Clojure team) 2022-12-16T15:02:10.139619Z
You can use Clojure.read() instead