On 04.05.2013 12:16, Korny Sietsma wrote:
> What's the idiomatic way to avoid this? The options seem to be either
> to use
> (doall (map parse-record records))
> or (mapv parse-record records)
>
> Is either of these better? The latter is simpler, the former (to me)
> expresses that you are deliberately forcing non-laziness. Or is there
> some other alternative?
`doall` is idiomatic. As you said, `mapv` tells the reader that you need
the result to be a vector (you don't) while leaving implicit the fact
that you want to force the evaluation of the sequence, so it's confusing
in two ways.
If you don't care about the return values of the `save-result!` calls,
the best way is to use `doseq` to iterate over the records:
(defn parse-and-store [raw-data]
(try
(save-audit-data! raw-data)
(let [records (split-records raw-data)
results (map parse-record records)]
(doseq [result results]
(save-result! result)))
(catch Exception e
(save-error-data! raw-data e))))
--
Timo
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