I know I'm coming a bit late in this thread but i did not have the
chance to reply earlier...
Can somebody elaborate briefly what is the problem with the combination
of with-open/doseq/line-seq? In a project of mine I'm dealing with files
larger than 200MB (which of course will not even open on a regular
text-editor) and I've been happily using with-open/doseq/line-seq with
great success...As Stuart pointed out as long as the entire processing
happens within a 'with-open' all is good and this is the approach I'm
always following with no memory issues...What am I missing? What exactly
do you mean by "close the file"? Do you mean "close the
clojure.java.io/reader"? which happens implicitly when a with-open
exits? I've also not understood what the original problem is...Has
anyone had problems with large files?
sorry for the inconvenience...I read the entire thread and I'm still not
understanding!
Jim
On 29/10/12 03:21, Dave Ray wrote:
Stuart,
Thanks for the link. It confirms the suspicions I had about a general
solution for this issue. For the particular code I'm working with,
I'll try pushing with-open further up and see if that gives me some of
the flexibility I'm looking for.
Cheers,
Dave
On Sun, Oct 28, 2012 at 2:21 PM, Stuart Sierra
<the.stuart.sie...@gmail.com> wrote:
On Friday, October 26, 2012 11:11:48 PM UTC-4, daveray wrote:
I guess I looking for a magical line-seq that closes the file correctly
even if you consume part of the sequence, is resilient to exceptions,
etc, etc. I realize that it might be impossible, so I asked. :)
It's been discussed extensively in the past, but no one has come up with a
solution that adequately solves the general problem. See
http://dev.clojure.org/display/design/Resource+Scopes for examples of some
attempts.
The best approach I've found is to manage resources like files farther up
the stack. Instead of having a 'with-open' block that returns a sequence,
put the 'with-open' block at a higher level, so that it encompasses the
entire scope in which the file will be used.
-S
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
