The AoA, HoH, etc., nomenclature is discussed at length in the Perl Data Structures Cookbook (perldsc).

Update: BTW: You've once again updated a post without citation. Naughty, naughty!

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: Array qw difference by AnomalousMonk
in thread Array qw difference by dnamonk

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