On Tue, Nov 8, 2011 at 11:20 AM, Paul Rousseau
<[email protected]>wrote:
> Here is the Dumper output when I use the code,
>
> push @{$project{$projectno}}, \%days;
>
Right, so $project{$projectno} is an ARRAYREF, and each entry pushed in
this way will be a HASHREF.
Note that other entries may exist in your array before this loop, such as
'SCADA...' and 14 and 3 as shown below.
These are all valid:
print $project{$projectno}[0]; # SCADA...
print $project{$projectno}[1]; # 14
print $project{$projectno}[2]; # 3
print $project{$projectno}[3]{'6'}[0]; # 4.00
print $project{$projectno}[4]{'3'}[0]; # 6.00
etc.
$VAR1 = {
> '2011-0101' => [
>
# the first three here are throwing you off
your game:
> 'SCADA Host Re-evaluation Project',
> 14,
> 3,
> {
> '6' => [
> '4.00',
> ''
> ],
> '3' => [
> '6.00',
> ''
> ],
> '5' => [
> '4.00',
> ''
> ]
> }
> ]
> };
>
>
> When I execute the line,
>
> print Dumper \%{$project{$projectno}[2]};
>
> I still get the error,
>
>
> Can't use string ("3") as a HASH ref while "strict refs" in use at
> c:\images\mactimesheet.pl line 40
> 1, <STDIN> line 1.
>
> I will continue to experiment with the semantics. I believe I am close.
>
> Paul
>
>
>
>
>
> > Date: Tue, 8 Nov 2011 02:26:17 +0200
> > Subject: Re: How to push a hash on to a hash of array entries
> > From: [email protected]
> > To: [email protected]
> > CC: [email protected]
>
> >
> > Hi Paul,
> >
> > there are a couple of issues I could see in the code you sent,
> > let me point out some of them and hope those will help.
> >
> > In general I'd recommend using the Dumper function of Data::Dumper
> > to check what kind of data structure you got.
> >
> >
> >
> > On Tue, Nov 8, 2011 at 1:41 AM, Paul Rousseau
> > <[email protected]> wrote:
> > > Hello Perl Community,
> > >
> > > I want to build a complex hash.
> > >
> > > I want my hash structure to look like this:
> > >
> > > # %project = (<projectno1> => [<projdesc1>,
> > > # <hourtotal1>,
> > > # %days1 = (<day x> =>
> > > [<hours>,<desc>],
> > > # <day
> y> =>
> > > [<hours>, <desc>]
> > > # )
> > > # ],
> > > # <projdesc2>,
> > > # <hourtotal2>,
> > > # %days2 = (<day x> =>
> > > [<hours>,<desc>],
> > > # <day
> y> =>
> > > [<hours>, <desc>]
> > > # )
> > > # ]
> > > # )
> > >
> > > I am having trouble building up and populating the individual %days
> hash.
> > >
> > > Here is what I have so far.
> > >
> > > use strict;
> >
> > I'd recommend adding "use warnings;" as well.
> >
> > >
> > > my (
> > > %project,
> > > $projectno, $desc,
> > > $day,
> > > %days,
> > > $i
> > > );
> > >
> > > $projectno = "12345";
> > > "$desc = "testing first project";
> > >
> > > $project{$projectno} = [$desc, "0"]; # zero hours
> > >
> > > #later on, my code reads in some records such as
> > >
> > > # 3, 12, "painted a room"
> > > # 5, 6, "added a chair"
> > > # 14, 2, "made some calls"
> > >
> > > # for, say, project "12345"
> > >
> > > For my first test, I populated a smaller hash called %days.
> > >
> > > for ($i = 1; $i <=3; $i++)
> > > {
> > > ($day, $hour, $text) = split (',', <inline>);
> > > $days{$day} = ($hour, $text);
> > > }
> > >
> >
> > If I am not mistaken you want to pass an array reference there
> > and not an array so need square brackets:
> >
> > $days{$day} = [$hour, $text];
> >
> > Try this:
> > use Data::Dumper qw(Dumper);
> > print Dumper \%days;
> >
> >
> >
> > > #
> > > # now that I have finished populating a smaller hash, I want to copy
> the
> > > hash on to the bigger hash.
> > > #
> > >
> > > push @{$project{$projectno}}, %days;
> >
> > In this case perl will flatten the hash and you will push all the keys
> > and values of it to the array.
> > Try printing out the result with the Dumper.
> >
> > I am almost sure you will want to write:
> >
> > push @{$project{$projectno}}, \%days;
> >
> > See the back-slash in-front of the hash.
> >
> >
> > regards
> > Gabor
> >
> > --
> > Gabor Szabo
> > Perl Tutorial: http://szabgab.com/perl_tutorial.html
> > Perl Weekly: http://perlweekly.com/
>
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--
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don't want to do it." Stephen Covey
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