in reply to Value of a key in hash in hex

$sidstat{$instsid} contains a hash reference, a pointer to a hash where the key SQLEXECINFO contains 1677721807/20/2017 00:03:38

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Re^2: Value of a key in hash in hex
by PSP (Initiate) on Jul 20, 2017 at 17:29 UTC

    I have tested below code and it doesn't show the reference, I am just trying to figure out what is the difference between this and what I have pasted earlier

    #!/usr/bin/perl # create our perl hash $prices{"pizza"} = 12.00; $prices{"coke"} = 1.25; $prices{"sandwich"} = 3.00; #-------------------------------------------------- # option 1: # print the hash key and value using a foreach loop #-------------------------------------------------- foreach $key (keys %prices) { print "$key costs $prices{$key}\n"; }

      Illustrative example:

      use strict; use warnings; use Ref::Util 'is_hashref'; use Test::More tests => 2; my %hash; $hash{foo} = 1; $hash{bar} = { baz => 'quux' }; ok is_hashref ($hash{bar}); ok not is_hashref ($hash{foo});

      See perlreftut and perldsc.

      Put another way, the value of the hash element  $prices{"pizza"} is a simple scalar: 12.00. The value of the hash element  $sidstat{$instsid} pasted earlier was a hash reference, and print printed the stringization of such a reference: something like HASH(0x2017b98).

      Consider an example:

      c:\@Work\Perl\monks>perl -wMstrict -le "use Data::Dumper; ;; my %hash; ;; $hash{'pizza'} = 12; $hash{'ref_to_hash'} = { 'one' => 'uno', 'two' => 'dos', }; ;; for my $hash_key (keys %hash) { print qq{'$hash{$hash_key}'}; print Dumper $hash{$hash_key}; } " '12' $VAR1 = 12; 'HASH(0x185b68)' $VAR1 = { 'one' => 'uno', 'two' => 'dos' };


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