I think I answered myself, looks like it does here:
try {
Var.pushThreadBindings(
RT.mapUniqueKeys(CURRENT_NS, CURRENT_NS.
deref(),
WARN_ON_REFLECTION,
WARN_ON_REFLECTION.deref()
,RT.UNCHECKED_MATH, RT.
UNCHECKED_MATH.deref()));
loaded = (loadClassForName(scriptbase.replace('/', '.
') + LOADER_SUFFIX) != null);
}
finally {
Var.popThreadBindings();
}
So now I understand, but I wonder if it makes sense. 99% of the time, it
won't be an issue, but if you're doing anything with *ns*, you'll run into
a situation where if you compile and bootstrap yourself through gen-class
or clojure's java API, your code will not behave similar to when you're
loaded at runtime or bootsraped through clojure.main or lein.
(ns dda.main
(:gen-class))
(def should-exist "Do I exist?")
(defn -main []
(in-ns 'other)
(ns-name *ns*))
A bad example, but this code will work through lein, clojure.main, and when
loaded from a REPL, but not when started from gen-class or Clojure's java
API. Is there a good reason for the discrepancy? Shouldn't all methods to
bootsrap your code start out with an equal initialization scheme? I would
suggest that Clojure's java API (which I assume gen-class uses under the
hood) should also initialize the common bindings and set the namespace to
user. That way, all entry point always behave similarly.
On Wednesday, 21 June 2017 07:03:55 UTC-7, Didier wrote:
>
> That makes sense. Actually if you use Clojure's Java API and you require a
> namespace and invoke a Var, it will do the same, *ns* will just be
> clojure.core.
>
> So I get it is simply because the last thing to set ns was RT.
>
> One more question:
>
> So I assume "load" would eval ns in my namespace, setting *ns* to
> dda.main, then it would run through the file, eval all forms, and finally
> it would reset *ns* to the previous value. Is that correct, or is there
> something about loading that's different?
>
> Thanks
>
>
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