There's still nothing in %MYHASH. Yes, you're declaring scope for %MYHASH and everything but just because %MYHASH is declared doesn't mean anything is in it. You have to assign some value or another into it in order for a while to work. Until there's something in your hash your while will never get executed and nothing will get printed.
You probably want something like this:
#!/usr/bin/perl -w
use strict;
my ($file_list, $file_data)=@ARGV;
my %MYHASH;
#create hash
sub do_hash {
my $filename=shift;
open(FH, $filename) or die "Can't open $filename: $!\n";
while(<FH>){
my ($Name, $Data)=split,2;
$MYHASH{$Name} = $Data;
}
close FH;
}
do_hash('file_data');
foreach my $key (keys %MYHASH) {
print "$key => $MYHASH{$key}\n";
}
exit;
Note the fact that %MYHASH is assigned a whole bunch 'o data from the file, and after do_hash is completed (and %MYHASH has stuff in it) THEN all the data is printed out. And BTW, it should've probably been split, 2 not split, 1.
Gary Blackburn
Trained Killer
-
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
or How to display code and escape characters
are good places to start.
|