What are common pitfalls or gotchas with dereferencing and postderef syntax?

Understanding dereferencing and postderef syntax in Perl can be tricky. Common pitfalls include confusing references with their dereferenced values, improper use of arrow syntax, and not realizing the difference between list and scalar context. These gotchas can lead to subtle bugs and unexpected behavior in your code.

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# Example of dereferencing in Perl $ref = []; # create an array reference $ref[0] = "Hello"; # Dereferencing the array reference print @{$ref}; # Correct way to dereference # Common pitfall - missing the curly braces print $ref[0]; # Incorrect syntax, might lead to errors

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