Since Perl 5.14 this dereferencing is done automagically.

From the docs:

Starting with Perl 5.14, keys can take a scalar EXPR, which must contain a reference to an unblessed hash or array. The argument will be dereferenced automatically. This aspect of keys is considered highly experimental. The exact behaviour may change in a future version of Perl.
  1. for (keys $hashref) { ... }
  2. for (keys $obj->get_arrayref) { ... }

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

My blog: Imperial Deltronics

In reply to Re: printing all values in a hash of hashes of arrays by CountZero
in thread printing all values in a hash of hashes of arrays by estreb

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