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making a different data structure

Posted on 2009-05-07
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Last Modified: 2012-05-06
one more question.. I want to make an HoH from an array but don't know why when I use print Dumper it does not look like a HoH it looks more like HoA i would say... attached is what I got...

i want something like this:
my %data  =  {'15'=>{'MATH'=>'412'},'16'=>{'Thermo'=> '235'},'17'=>{'statics'=>'211'}, '18'=>{'design'=>'250'}}; I currently have this:
my %data  =  {'15'=>['MATH'=>'412'],'16'=>['Thermo'=> '235'],'17'=>['statics'=>'211'], '18'=>['design'=>'250']};


my $counter = $#newper+1;
   
   foreach my $check (sort @table){
      
      push(@{$data{$counter}},%$check);
   
   $counter++;
   
   }
 
my @table = ({'MATH'=>'412'},{'Thermo'=> '235'},{'statics'=>'211'}, {'design'=>'250'});

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Question by:cucugirl
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6 Comments
 

Author Comment

by:cucugirl
ID: 24327973
my bad... i currently have this:

my %data  =  {'15'=>['MATH','412'],'16'=>['Thermo', '235'],'17'=>['statics','211'], '18'=>['design','250']};
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Accepted Solution

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ozo earned 250 total points
ID: 24328008
my %data = (map{$couner++=>$_}@table);
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Expert Comment

by:ozo
ID: 24328048
['MATH'=>'412']
is the same as
['MATH','412']

=> is like , except that it automatically treats the left side as a bareword so you don;t get a warning fot
[math=>'412']
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Expert Comment

by:ozo
ID: 24328156
since @table contains references, sort @table will sort by the stringified references, which would come out in order of its address in memory, which is not very meaningful, ad probably not what you wanted.
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Expert Comment

by:ozo
ID: 24328190
@{$data{$counter}} will autovivify $data{$counter} as an array
did you mean
$data{$counter}={%$check}
instead of
push(@{$data{$counter}},%$check)
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Expert Comment

by:ozo
ID: 24328222
What is the purpose of having a hash with sequential numeric keys instead of an array?
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