Re: Unwinding multidimensional HASH (path, xpath, json)

[Anonymous Monk]

you could adapt

#!/usr/bin/perl --
use strict; use warnings;
my %hoh = (
 a => { b => { c => 4 }, },
 d => { e => { f => 5, g => 6 }, },
 h => {
   i => {
       i => { 2..5 },
       j => { 0..3 },
       k => { 7..10 },
   },
   j => { 0..3 },
   k => { 7..10 },
 },
);
rehoh( \%hoh );
sub rehoh {
  my( $hoh, $depth, $path, $callback ) = @_;
  $depth ||= 0;
  $path ||= '';
  while( my( $key, $val ) = each %$hoh ){
    if( ref $val ){
      rehoh( $val , $depth + 1, "$path/$key" );
    } else {
      if( $callback ){
        $callback->($val, "$path/$key" );
      } else {
        print "($depth)", " " x $depth, "$val\n";
        print " " x ( length( "($depth)" ) + $depth ), "\@ $path/$key\
+n";
      }
    }
  }
}
__END__
(2)  8
     @ /h/k/7
(2)  10
     @ /h/k/9
(2)  1
     @ /h/j/0
(2)  3
     @ /h/j/2
(3)   8
      @ /h/i/k/7
(3)   10
      @ /h/i/k/9
(3)   1
      @ /h/i/j/0
(3)   3
      @ /h/i/j/2
(3)   5
      @ /h/i/i/4
(3)   3
      @ /h/i/i/2
(2)  4
     @ /a/b/c
(2)  6
     @ /d/e/g
(2)  5
     @ /d/e/f

or maybe JSON::Path#paths

read Tutorials Data Types and Variables,the basic datatypes, three, keys, values, ref

It seems a mistake to return a multidimensional structure when all you want is a bunch of xpath's, anyway :)