How has support for argument passing (@_) changed across recent Perl versions?

Support for argument passing in Perl, specifically the use of the array @_, has remained fundamentally the same across recent versions. The array @_ is used to pass arguments to subroutines, and while the syntax and behavior remain consistent, newer versions of Perl have introduced enhancements in features and syntax improvements that can affect how developers use this functionality.

One notable change in recent versions is the introduction of "signatures," which allows for more readable subroutine declarations and automatic handling of parameters without needing to directly manipulate @_.

Below is an example demonstrating the use of @_ in a simple subroutine:

sub example_subroutine { my ($arg1, $arg2) = @_; return "Argument 1: $arg1, Argument 2: $arg2"; } my $result = example_subroutine("Hello", "World"); print $result; # Outputs: Argument 1: Hello, Argument 2: World

argument passing Perl @_ subroutines signatures

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