Beefy Boxes and Bandwidth Generously Provided by pair Networks
Come for the quick hacks, stay for the epiphanies.
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Hi sundialsvc4,

I think that in my approach to this problem I would “flip” it: let the second file drive the show, not the first!

Since your first file appears to contain nothing other than a list of “keys of interest,” let’s start the show by a simple loop that adds each key to a hash with a do-nothing value.

Just in case you didn't notice, that's exactly the approach suggested earlier by both poj and myself. I even explicitly explained that there were two possible approaches and that, in this case, it was probably a bit better to store the keys taken from the first file in the hash. Although, to tell the truth, choosing between the two approaches would require to know more about the respective size of the files. If the second file is much shorter than the first one, it might be better to choose the other way around.


In reply to Re^2: comparing an ID fom one file to the records in the second file by Laurent_R
in thread comparing an ID fom one file to the records in the second file by ag88

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



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others scrutinizing the Monastery: (5)
As of 2024-03-28 20:04 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found