Hi Tim, your getArg function is actually a nice use case of a not very often used of condp: :>>.
Please note in the following example: as David
Nolen said, we have to use seq after re-seq since
re-seq doesn't return a nil but the empty list.
Hence I used comp to chain the two together.
Also incorporated the suggestions of David Sletten
to use \w and \S.
Another thing I noticed: you put the docstring
after the argument vector. That's wrong. In Clojure
the docstring has to be in front of the argument
vector.
(defn get-arg
"Docstring goes here!"
[arg]
(condp (comp seq re-seq) arg
#"[+](\w+)" :>> #(vector (-> % first (nth 1) keyword) true)
#"[-](\w+)" :>> #(vector (-> % first (nth 1) keyword) false)
#"(\w+)=(\S+)" :>> #(let [x (first %)]
[(keyword (nth x 1)) (nth x 2)])
[:files arg]))
Maybe one could also merge the first two cases, but well...
Hope this helps.
Sincerely
Meikel
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