Mastering Modern Perl: Writing Efficient and Maintainable Code/

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Pitfalls and Misfeatures

Pitfalls and Misfeatures

Learn about the pitfalls and misfeatures of Perl.

We'll cover the following...

Old-style function syntax

Perl still supports old-style invocations of functions carried over from ancient versions of Perl. Previous versions of Perl required us to invoke functions with a leading ampersand (&) character:

Perl
# outdated style; avoid
my $result = &calculate_result( 52 );
# very outdated; truly avoid
$result = do &calculate_result( 42 );

The vestigial syntax is visual ...