Hi everyone, I hope this isn't too much of a newbie question. This program is supposed to keep track of my grades and figureout my GPA. I'm having problems reading the file into my hash so I can work with it. I get an extra hash key that looks like this: HASH(0x812d1f8)

The code: 
#!/usr/bin/perl -w

use strict;

use CGI::Carp qw/fatalsToBrowser/;

use CGI qw/:standard/;
my $Query = new CGI;


print $Query->header();

#
#Globals
#
my %Semester = {};
my $TotalCredits = 0;


open( FILE, "grade.dat" ) || die "Can't open grade.dat";

my @SemesterLine = <FILE>;

close FILE;

my $I = 0;

foreach my $ClassLine ( @SemesterLine )
{
    $I++;
    print $I . "<br>";
    chomp( $ClassLine );
    my ( $SemesterName, $ClassName, $Grade, $Credits ) = split( /:/, $
+ClassLine );
    
    if ( !( exists $Semester{$SemesterName}{'TotalCredits'} ) ) # chec
+k to see if hash was already initalized
    {
        $Semester{$SemesterName}{'TotalCredits'} = $Credits;
    }
    else
    {
        $Semester{$SemesterName}{'TotalCredits'} += $Credits;
    }
    
    $Semester{$SemesterName}{$ClassName}{'Grade'} = $Grade;
    $Semester{$SemesterName}{$ClassName}{'Credits'} = $Credits;
    $Semester{$SemesterName}{$ClassName}{'Name'} = $ClassName;
    
    $TotalCredits += $Credits;
}    



#Write a general report


while( my ( $SemesterKey, $SemesterValue ) = each %Semester )
{
    print "SemesterKey: " . $SemesterKey . "<br>";
    
    while ( my ( $ClassKey, $ClassValue ) = each %{ $SemesterValue } )
    {
        print "ClassKey: " . $ClassKey . "<br>";
    }
}

[download]


The data file: 
Spring 2001:COSC 210 - Object Oriented and GUI Programming:A:3
Spring 2001:COSC 220 - Applied Computer Programming:A:3

[download]


I put a counter into the read function to make sure that it wasn't looping too many times and reading in a new line. That wasn't the problem. At the bottom it prints out all the semester and class keys. The classes are read into the array correctly also. The output is below in case you want to look at that. Thanks everyone. I'm sure it's something simple and an experienced eye will pick it up quickly. 
1
2
SemesterKey: Spring 2001
ClassKey: COSC 220 - Applied Computer Programming
ClassKey: COSC 210 - Object Oriented and GUI Programming
ClassKey: TotalCredits
SemesterKey: HASH(0x812d1f8)

[download]


--=Lolindrath=--

In reply to Extra hash key when reading text file into hash by lolindrath

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