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@bnyeggen
Created December 29, 2011 14:36
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Wrong and right way to parse a file in Clojure
;dummy.csv is of format "1,2,3\n4,5,6\n"
;fails since everything is lazy (but works if you do something that forces resolution)
(with-open [r (reader "file:///home/brycen/dummy.csv")]
(for [lines (read-csv r)]
(zipmap [:x :y :z] lines)))
;Doesn't close "properly" (but works most of the time)
(for [lines (read-csv (reader "file:///home/brycen/dummy.csv"))]
(zipmap [:x :y :z] lines))
;Dumps file, then parses it. Slurp handles closing.
(for [lines (read-csv (slurp "file:///home/brycen/dummy.csv"))]
(zipmap [:x :y :z] lines))
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