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

Re: How to populate array with lines from text file? (Moved from Q&A)

by Fastolfe (Vicar)
on Dec 09, 2000 at 15:40 UTC ( #45878=note: print w/replies, xml ) Need Help??

in reply to How to populate array with lines from text file? (Moved from Q&A)

I suspect the other posts will help you with your problem, but in the event they don't, it seems like you're omitting or heavily editing your code. What you posted shouldn't even compile, as you have variables that are undeclared. Typically you only get that message when working with an undefined scalar in such a way that you're assuming it has content. This can occur with your array if you have an undefined element, which is likely because you are pushing $line onto it, and I don't see anywhere where you are setting $line. So basically for each line that you read from the file (into $_), you're pushing 'undef' onto the array. Another poster mentioned that you should be using $_, which is correct, or change your while construct to read something like: while ($line = <FILE>) { ....

So if these posts don't help you, can you post the real code with 2 or 3 additional lines so that we can get a better feel for context? Good luck.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://45878]
[thepkd]: getting data out of the ds
[choroba]: it depends. Give more details, please
[thepkd]: i used a series of {}'s but it dont work
[choroba]: You need square brackets for arrays
[GotToBTru]: you can certainly construct a single expression to access any part of the data structure, without using temp variables. but you might make it easier on yourself and any other poor soul who has to understand your code if you do
[thepkd]: to dereference i mean
LanX .oO( oh tempz, oh moretz)
[thepkd]: @GotToBTru Sure. But.
choroba waits

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (13)
As of 2016-12-06 13:27 GMT
Find Nodes?
    Voting Booth?
    On a regular basis, I'm most likely to spy upon:

    Results (104 votes). Check out past polls.