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?
Reading CSV file as many hash-es
How to sort a hash in Perl?
How to sort a hash of hashes by value?
Sorted hash in Perl using Tie::IxHash
Fast lookup by name or by date - Array - Hash - Linked List
Search for hash in an array of hashes
Merge hashes of arrays
The Hash-bang line, or how to make a Perl scripts executable on Linux
Can't use string (...) as an HASH ref while "strict refs" in use at ...
Useless use of hash element in void context
Creating a hash from an array in Perl
Hashes in Perl
How to insert a hash in another hash in Perl
Multi dimensional hashes in Perl
Perl hash in scalar and list context
Printing hash of hashes of arrays by the array