I was under the impression that the order of unsorted hash keys is not even guaranteed for *each invocation* of perl for any version of perl in any environment ... 

# Perl 5.8.7, perldoc -f keys
keys HASH
  ...
  The keys are returned in an apparently random order.  The actual
  random order is subject to change in future versions of perl, but it
  is guaranteed to be the same order as either the "values" or "each"
  function produces (given that the hash has not been modified).
  Since Perl 5.8.1 the ordering is different even between different
  runs of Perl for security reasons (see "Algorithmic Complexity
  Attacks" in perlsec).
  ...

[download]

... ok, at least not since version 5.8.1.

In reply to Re^4: Human-readable serialization formats other than YAML? by parv
in thread Human-readable serialization formats other than YAML? by jasonk

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