The dorun in this function
(defn process-file
"Process csv file and prints first item in every row"
[file-name]
(let [data (slurp file-name)
rows (parse-csv data)]
(dorun (map #(println (first %)) rows))))
causes each row of vectors in rows to be processed.
(doseq [a-row rows] (println a-row) )
would print each row in the data, which looks like this (the real
data, not the test data I've been using today.)
"MeterID","Reading","ReadingDateTime","Account","CustomerLN","CustomerFN","DeviceID","DeviceType","ChannelNumber","DecodeType","LoadDateLocal","PremiseID"
33891715,101100,"2011-06-05 23:00:00","610160000","SMITH","E & J",
80581200,43,0,75,"2011-06-06 06:00:01","610160000"
33891773,411200,"2011-06-05 23:00:00","610159000","COMMONER","A",
80598726,43,0,75,"2011-06-06 06:00:01","610159000"
33891887,133100,"2011-06-05 23:00:00","610158000","JONES","J & M",
80581189,43,0,75,"2011-06-06 06:00:01","610158000"
33891825,239400,"2011-06-05 23:00:00","610157000","SAWTOOTH","GEORGE
C",80598731,43,0,75,"2011-06-06 06:00:01","610157000"
It would be nice if the let statement would allow populating a local
variable from iterating all the rows of vectors. I just can't figure
out how to do it.
On Jun 30, 3:28 pm, Mark Rathwell <mark.rathw...@gmail.com> wrote:
> Not sure what you mean by 'row of vectors', and 'break up each row'.
>
> On Thu, Jun 30, 2011 at 3:20 PM, octopusgrabbus
> <octopusgrab...@gmail.com>wrote:
>
>
>
>
>
>
>
> > If I have rows of vectors, such as the return from clojure-csv\parse-
> > csv
>
> > ["a" 1 "b" 2 "c" 3 "d" 4]
> > ["e" 5 "f" 6 "g" 7 "h" 8]
>
> > How can I break up each row?
>
> > I've tried doseq in the let statement, but get an error.
>
> > On Jun 30, 2:27 pm, octopusgrabbus <octopusgrab...@gmail.com> wrote:
> > > Thanks. That did it.
>
> > > On Jun 30, 1:22 pm, Mark Rathwell <mark.rathw...@gmail.com> wrote:
>
> > > > One way would be:
>
> > > > (defn map-func
> > > > "test map function"
> > > > []
> > > > (let [mtr-seq (vector "a" 1 "b" 2 "c" 3 "d" 4)
> > > > read-map (apply hash-map mtr-seq)
> > > > (println read-map)))
>
> > > > On Thu, Jun 30, 2011 at 1:09 PM, octopusgrabbus <
> > octopusgrab...@gmail.com>wrote:
>
> > > > > Given this function
>
> > > > > (defn map-func
> > > > > "test map function"
> > > > > []
> > > > > (let [mtr-seq (vector "a" 1 "b" 2 "c" 3 "d" 4)
> > > > > read-map (<how to load key and value from mtr-seq>)
> > > > > (println read-map)))
>
> > > > > I want to load read-map with the keys and values from mtr-seq.
>
> > > > > Eventually, this data is going to be from the return from parse-csv
> > > > > (clojure-csv), but I seem to be making more progress using simpler
> > > > > examples.
>
> > > > > The "a", "b", and so on represent a character string premise id, and
> > > > > the 1, 2, and so on represent a meter read.
>
> > > > > My goal is to create a map, and then pass that around in other
> > > > > functions.
>
> > > > > Thanks.
> > > > > cmn
>
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