Re^4: JSON and Perl Objects - How to access data?


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Re^4: JSON and Perl Objects - How to access data?

by Anonymous Monk

on Sep 06, 2015 at 04:35 UTC ( [id://1141183]=note: print w/replies, xml )

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in reply to Re^3: JSON and Perl Objects - How to access data?
in thread JSON and Perl Objects - How to access data?

Wow- that is awesome. Thank you for the well commented answer. I really appreciate it.

I'm going to have to wrap my head around

say ${ $obj->{'items'}->[1] }{'name'};

but other than that I'm there. Thanks again!

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Re^5: JSON and Perl Objects - How to access data?
by AnomalousMonk (Archbishop) on Sep 06, 2015 at 13:04 UTC

See also the Data Structures Cookbook.

I'm going to have to wrap my head around ...

One way to go about that is to dump (see Data::Dumper; see also Data::Dump) the Perl object reference in stages, and from the inside out (i.e., top level to bottom):
print Dumper $obj->{'items'};
will show that you have a reference to an array. Then
print Dumper $obj->{'items'}->[1];
will show that one element of the array contains a hash reference. Finally,
print Dumper ${ $obj->{'items'}->[1] }{'name'};
will show the value of one key of the referent.

Update: BTW: the expression
${ $obj->{'items'}->[1] }{'name'}
is equivalent to the more concise and IMHO preferable
$obj->{'items'}[1]{'name'}

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