How can I combine hashes in Perl?

Question

What is the best way to combine both hashes into %hash1? I always know that %hash2 and %hash1 always have unique keys. I would also prefer a single line of code if possibl

Answer 1

For hash references. You should use curly braces like the following:

$hash_ref1 = {%$hash_ref1, %$hash_ref2};

and not the suggested answer above using parenthesis:

$hash_ref1 = ($hash_ref1, $hash_ref2);