I have some questions about the following:

(use '[clojure.contrib.str-utils :only (str-join)])

Why is the vector quoted? Is that because we need to quote everything
inside the vector? If so, what does it mean to quote the keyword
:only?

Why is the parameter to the use function a vector?

Why can't the third item in the vector, (str-join), be specified with
the symbol str-join instead of a list?

-- 
R. Mark Volkmann
Object Computing, Inc.

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