Perl

try/catch

__CLASS__

When to Use

• Text Processing: Regex engine is the gold standard.
• Sysadmin: Legacy scripts on every Unix system.
• Bioinformatics: Massive existing codebases (Bioperl).

Core Concepts

Sigils

$scalar

@array

%hash

Context

my $len = @arr

my. ($first) = @arr

CPAN

Best Practices (2025)

• Use

  v5.40

  : Enable new features

  use v5.40;

  .
• Use

  strict

  and

  warnings

  : Mandatory for sanity.
• Use

  App::cpanminus

  : Modern installer.

• Don't write "write-only" code: value readability over golf.

References

• Perl.org