> My problem was that I thought the literal "1" will be boxed behind the
> scenes, I didn't even bother looking for a version of "add" for
> primitives because I thought they never existed in Clojure.
>
> I'll try to go over the Numbers class again and see if all this makes
> sense.
Looks like the compiler is enforcing that loop arguments match the
primitive type of the local bindings; if they do, it'll emit code with
unboxed primitives.
if(lb.getPrimitiveType() != null)
{
Class primc = lb.getPrimitiveType();
try
{
if(!(arg instanceof MaybePrimitiveExpr && arg.hasJavaClass()
&& arg.getJavaClass() == primc))
throw new IllegalArgumentException("recur arg for
primitive local: " +
lb.name + " must be matching primitive");
}
catch(Exception e)
{
throw new RuntimeException(e);
}
((MaybePrimitiveExpr) arg).emitUnboxed(C.EXPRESSION, objx, gen);
}
else
{
arg.emit(C.EXPRESSION, objx, gen);
}
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