Hello,
I have some data that I would like to store in a hash of arrays, however this has proved to be a little complicated for me. I have written some test code below to investigate the behavior of this particular data type, and would like some help trying to understand it.
%Hash = (
ArrayInHash => [1,2,3,4],
);
print "Array in hash: @$Hash{ArrayInHash}";
@Array = @$Hash{ArrayInHash};
print "\nArray: @Array";
$ArrayRef = $Hash{ArrayInHash};
@Array2 = @$ArrayRef;
print "\nArray from ordinary scalar reference: @Array2";
print "\n\nTrying a foreach loop with the hash";
foreach(@$Hash{ArrayInHash})
{
print "\n$_";
}
print "\n\nTrying a foreach loop with the scalar array reference";
foreach(@$ArrayRef)
{
print "\n$_";
}
This produces:
Array in hash:
Array:
Array from ordinary scalar reference: 1 2 3 4
Trying a foreach loop with the hash
Trying a foreach loop with the scalar array reference
1
2
3
4
Why didn't the first two print statement or foreach loop act on the array? There's got to be a better way to access the array besides setting the reference to an ordinary scalar first.
Thanks
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