2010/10/25 Tim Webster <timothy.webs...@gmail.com>:
> I thought that the issue might be that the concrete data still was not
> populated in my list-of-lists, unlike your literal, so I started with
> a clean environment and re-ran my repl session line by line from the
> jline history file. I could not reproduce the error. (Which troubles
> me even more...the error had to come from somewhere.)
>
> For the record, here is how I build the table:
>
> (def data (slurp "data.txt"))
> (def lines (. data split "\n"))
> (def my-table (map #(. % split "\t") lines))
You don't leverage laziness here: The whole file is read into the
java String "data" and "line" is just a primitive Java Array of
Strings realized all at once: This may cause OutOfMemoryError on
large files and is not required in your use case. Consider to use of
"line-seq":
(with-open [f (reader "data.txt")]
(->> (line-seq f)
(map #(split % #"\t"))
(map second)
frequencies))
Jürgen
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