dear forum members,

my query must be a silly, but I have been finding hard to undestand json. Apart from knowing it is a key value pair, I cannot undertand much. How to initiate it. How to loop over it. How to print it without using print Dumper. Is it a hash or is it reference?

example:
my $son = '{ }'; my $r=decode_json($son);#cannot understand why I need to do $r->{"trans2"}[0]="90"; $r->{"trans2"}[1]="20"; print "\n\n"; #print Dumper \$r; # without dumper, how can I iterate using for loop? print $r->{"trans2"}[0],"\n"; #hard coded print $r->{"trans2"}[1],"\n"; #hard coded
Above, I want 2 values in trans1 key.

How do I iterate over keys in json object?

Sorry, I have posted this in wrong forum. Admins, pleae move this thread to respective forum


In reply to understanding json in perl by sanjeevbinf

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.