While examining the Clojure source I came across this line in the
EmptyList class:

    public boolean equals(Object o) {
        return (o instanceof Sequential || o instanceof List) &&
RT.seq(o) == null;
    }

What's up with the RT.seq(o) == null? Why don't we do this instead:

    public boolean equals(Object o) {
        return (o instanceof Sequential || o instanceof List) && o
instanceof Seqable && ((Seqable)o).seq(o) == null;
    }

I've seen RT used in other places as well, I guess I don't understand
why it's used here, or what it is at all....

Timothy


-- 
“One of the main causes of the fall of the Roman Empire was
that–lacking zero–they had no way to indicate successful termination
of their C programs.”
(Robert Firth)

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