1. Locate the key that matches the name Feynman. 

    my $surname = 'Feynman';
my @matching_ids =
    grep { $accounts{$_}{surname} eq $surname }
    keys(%accounts);

    [download]

  2. Make sure @matching_ids has at least one matching record. 

    die("No records matching surname $surname\n") if !@matching_ids;

    [download]

  3. Handle multiple matches as you see fit.

  4. Get the transactions. They are located in 

    @{ $accounts{$id}{transactions} }

    [download]

In reply to Re: get the value from a refernce array of hash by ikegami
in thread get the value from a refernce array of hash by fseng

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