This is meant for rough "Rosetta" comparison, and clearly the two languages have some very different idioms and distinct semantics on various features.

Foo.pm: 
package Foo;
our @ISA = qw(Exporter Phoo);

our $Bar = 6;
my $Whig = 5;

sub new {
  my $count if 0;  $count++;
  my $self = { };
  $self->{baz} = 4;
  return bless($self, shift());
}

sub foo {
  my $self = shift;
  my $arg = shift;
  local $Whig = 3;
  $self->my_Phoo_func($Whig, $arg, $/);

}

[download]
 Foo.cpp: 
#include "Foo.h"
  // class Foo : public Phoo { ... };

static int Foo::Bar = 6;
static int Whig = 5;

Foo::Foo() {
  static int count = 0;  count++;

  this->baz = 4;

}

void Foo::foo(int arg) {


  int save_Whig = Whig; Whig = 3;
  this->my_Phoo_func(Whig, arg, "\n");
  Whig = save_Whig;
}

[download]

I mention the C++ this twice for clarity, though these are implicit, not required, and rarely mentioned in C++. Note that static means something entirely different inside a C++ function versus outside a function. The Perl hack my $foo if 0; is not something I recommend, but does emulate C++'s static lexical variables (or as Larry calls them, "persistent" between calls).

--
[ e d @ h a l l e y . c c ]

In reply to Re: Package-Level Variables by halley
in thread Package-Level Variables by Anonymous Monk

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