On Tue, Jan 6, 2009 at 4:47 PM, Tom Ayerst <[email protected]> wrote:
> Its not the println, nor getting a reader (duckstreams is fine, I can do
> that). Its the converting it to a seq and stepping through it printing each
> element (which should be a line). Its the loopy, steppy bit, just for a side
> effect; that I am messing up.
>
> Cheers
>
> Tom
I've done this type of thing and it worked great for me.
(with-open [r (clojure.contrib.duck-streams/reader "filename.txt")]
(doseq [line (line-seq r)]
; do stuff with the line here
))
Basically you'll want to use the line-seq function. Hopefully that helps.
> 2009/1/6 Mark Volkmann <[email protected]>
>
>
>> On Tue, Jan 6, 2009 at 5:26 PM, Tom Ayerst <[email protected]> wrote:
>> > Hi,
>> >
>> > How do I read and print a text file? I can read it, its the printing
>> that
>> > is the problem, I feel it should be obvious but I keep tripping myself
>> up.
>> > (The context is I need to extract data line by line, translate the line
>> > format and save it for a legacy app)
>>
>> Do you just need to print to stdout?
>> The println function does that. It puts a space between the output of
>> each of its arguments. If you don't want that you can use the str
>> function to concatenate a bunch of string values together.
>> If you need something fancier, don't forget that you can access
>> everything in java.io from Clojure.
>>
>> --
>> R. Mark Volkmann
>> Object Computing, Inc.
>>
>>
>>
>
> >
>
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