fields

fields

• NAME
• SYNOPSIS
• DESCRIPTION
• SEE ALSO

NAME

fields - compile-time class fields

SYNOPSIS

{
    package Foo;
    use fields qw(foo bar _Foo_private);
    sub new {
        my Foo $self = shift;
        unless (ref $self) {
            $self = fields::new($self);
            $self->{_Foo_private} = "this is Foo's secret";
        }
        $self->{foo} = 10;
        $self->{bar} = 20;
        return $self;
    }
}

my $var = Foo->new;
$var->{foo} = 42;

# this will generate a run-time error
$var->{zap} = 42;

# this will generate a compile-time error
my Foo $foo = Foo->new;
$foo->{zap} = 24;

# subclassing
{
    package Bar;
    use base 'Foo';
    use fields qw(baz _Bar_private);        # not shared with Fo	          			          		
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