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

Re: Hash Question

by state-o-dis-array (Hermit)
on Jan 10, 2011 at 22:23 UTC ( #881553=note: print w/replies, xml ) Need Help??

in reply to Hash Question

I'm going to go strictly off your description, as what you said you want to print out doesn't seem to match the description as I understand it.

I would just do something like this:

@ACCTS = ("1234", "5678", "6959"); open(IN,"InFile.txt"); %acct=""; while (defined($line = (<IN>))){ foreach $x (@ACCTS) { if ($line =~/$x/){ #only print the first line we see for each account unless( exists $acct{$x} ){ print "$line\n"; $acct{$x}++; } } } }
Or if you need to store all the data for other purposes:
@ACCTS = ("1234", "5678", "6959"); open(IN,"InFile.txt"); %acct=""; while (defined($line = (<IN>))){ foreach $x (@ACCTS) { if ($line =~/$x/){ push(@{$acct{$x}},$line); } } } foreach $key (sort keys %acct){ print "$key,$acct{$key}[0]\n"; }

Replies are listed 'Best First'.
Re^2: Hash Question
by AnomalousMonk (Canon) on Jan 10, 2011 at 23:18 UTC

    Initializing a hash (and a non-lexical one for good measure) with a key of an empty string with the default value of undef produces a warning if warnings are enabled, as they almost always should be – along with strictures.

    use warnings; use strict;
Re^2: Hash Question
by mmittiga17 (Scribe) on Jan 11, 2011 at 19:33 UTC

    Thank you all very much for the help. With your help I learned something new and got my script to work. <\p>

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://881553]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others contemplating the Monastery: (5)
As of 2016-10-23 00:48 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (299 votes). Check out past polls.