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Moose constructor
Moose testing type constraint
The Hash-bang line, or how to make a Perl scripts executable on Linux
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
How to sort a hash in Perl?
How to sort a hash of hashes by value?
Sorted hash in Perl using Tie::IxHash
Search for hash in an array of hashes
Can't use string (...) as an HASH ref while "strict refs" in use at ...
Useless use of hash element in void context
Reading CSV file as many hash-es
Printing hash of hashes of arrays by the array
Dumping a hash - video
Hash of Arrays in Perl
Exchange values and keys of a hash - how to reverse a hash
Fast lookup by name or by date - Array - Hash - Linked List
delete an element from a hash
exists, delete in hash - video
undef on Perl arrays and hashes