How do you use return values (wantarray) with a short example?

In Perl, the `wantarray` function is used to determine the context in which a subroutine has been called, allowing you to return different types of values based on how the caller expects to use the returned data (either as a list or as a scalar). This is particularly useful for optimizing the performance of your code.

Here is a short example demonstrating the use of return values with `wantarray`:

sub example { my @array = (1, 2, 3); if (wantarray) { return @array; # Return list in list context } else { return scalar(@array); # Return count in scalar context } } # Usage my @result_array = example(); # This will receive (1, 2, 3) my $result_scalar = example(); # This will receive 3

perl wantarray return values subroutine programming

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