How to dereference a reference to a hash or to an array in Perl
Moo with hash reference as attributes - with or without default values
ref - What kind of reference is this variable?
Creating a hash from an array in Perl
Hashes in Perl
How to insert a hash in another hash in Perl
How to sort a hash in Perl?
How to sort a hash of hashes by value?
Multi dimensional hashes in Perl
Perl hash in scalar and list context
Printing hash of hashes of arrays by the array
Fast lookup by name or by date - Array - Hash - Linked List
Search for hash in an array of hashes
The easiest way to find the highest hash value without looping through all of them (max)
Sorted hash in Perl using Tie::IxHash
Create hash from two arrays: keys and values
Exchange values and keys of a hash - how to reverse a hash
each - iterate over Perl hash elements pair-by-pair
Merge hashes of arrays