• $array[idx] →
  @array[idx]
• a ? b : c →
  a ?? b :: c
• $self->method(...) →
  .method(...)
• sub { my ($self, $a, $b) = @_; ... } →
  method($a, $b) { ... }
• $x =~ s/.../.../g →
  $x ~~ s:g/.../.../
• $self->{foo} →
  $.foo
• $foo = "bar" unless defined $foo →
  $foo //= "bar" # (//) and (//=) will be in 5.9, too, IIRC
• if($foo eq "a" or $foo eq "b" or $foo eq "c") {...} →
  if $foo eq "a"|"b"|"c" {...}
• foreach my $foo (@baz) {...} →
  for @baz -> $foo {...}
• Regular expressions:
  • [abc] → <[abc]>
  • [^abc] → <-[abc]>
  • (?:...) → [...]

# This Perl 5 exporting code...
require Exporter;
our @ISA    = qw< Exporter >;
our @EXPORT = qw< foo >;
sub foo {...}

# ...becomes this in Perl 6:
sub foo(...) is export {...}
[download]

# Perl 5
sub get_foo {
  my $self = shift;

  my $ret = $self->{foo};
  return lc $ret; # always normalize
} 

sub set_foo {
   my ($self, $to) = @_;

   $to =~ s/\s+$//; # strip whitespace at the end
   $self->{foo} = $to;
}

# Perl 6:
has $:foo;
sub foo() is rw {
  return new Proxy:
    FETCH => { lc $:foo },
    STORE => -> $to is copy {
      $to ~~ s/\s+$//;
      $:foo = $to;
    };
}
# And then:
say $obj.foo;
$obj.foo = "...";
# Notice: Standard assignment syntax!
# Assignments should look line assingments, not like method calls
[download]

has $.foo is rw;
[download]

subtype OddInt of Int where { $^n % 2 == 1 }
has OddInt $.foo is rw;
# And then:
$obj.foo = 12; # will die (at compile-time!)
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