Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

As I look through the collected responses to this thread so-far, I would suggest that there are two general approaches that are being (equally seriously ...) offered:

  1. If the total number of output-files is both “truly unpredictable” and “can be counted-on to be small,” then it is possible to have all of the possible output-files open at the same time.   As long as you are sure that the operating system won’t object (fatally... as operating-systems are wot to do when their Godly Prerogatives are crossed by Mere Mortals), then you can simply throw each incoming record into the appropriate (simultaneously...) open bucket.
  2. If this is not the case, then you probably are going to need to sort the incoming records first.   This, by definition, will cause all records having an identical key-value to be physically adjacent ... so that all of the records that are destined for any particular destination are adjacent ... so that you can meaningfully react to a change in the destination, with no need to remember history.   The advantage of this approach is, of course, that there is never more than one destination-bucket (file..) open at any one time.   The disadvantage is “the overhead of sorting.”   (Which may, actually, be quite acceptable.   There is, indeed, a reason why one of Dr. Knuth’s seminal books was titled:   Sorting and Searching ...)

In reply to Re: create separate output files based on name by sundialsvc4
in thread create separate output files based on name by rruser

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others contemplating the Monastery: (9)
    As of 2018-04-19 20:14 GMT
    Find Nodes?
      Voting Booth?