AnyEvent-Emitter
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delete $self->{events}{$name} unless @{$self->{events}{$name}};
}
# All
else { delete $self->{events}{$name} }
return $self;
}
1;
=encoding utf8
=head1 NAME
AnyEvent::Emitter - Event emitter base class (Mojo::EventEmitter porting).
=head1 SYNOPSIS
package Cat;
use 5.010;
use base 'AnyEvent::Emitter';
# Emit events
sub poke {
my $self = shift;
$self->emit(roar => 3);
}
package main;
# Subscribe to events
my $tiger = Cat->new;
$tiger->on(roar => sub {
my ($tiger, $times) = @_;
say 'RAWR!' for 1 .. $times;
});
$tiger->poke;
=head1 DESCRIPTION
L<AnyEvent::Emitter> is a simple base class for event emitting objects(Mojo::EventEmitter porting).
=head1 EVENTS
L<AnyEvent::Emitter> can emit the following events.
=head2 error
$e->on(error => sub {
my ($e, $err) = @_;
...
});
This is a special event for errors, it will not be emitted directly by this
class but is fatal if unhandled.
$e->on(error => sub {
my ($e, $err) = @_;
say "This looks bad: $err";
});
=head1 METHODS
=head2 catch
$e = $e->catch(sub {...});
Subscribe to L</"error"> event.
# Longer version
$e->on(error => sub {...});
=head2 emit
$e = $e->emit('foo');
$e = $e->emit('foo', 123);
Emit event.
=head2 has_subscribers
my $bool = $e->has_subscribers('foo');
Check if event has subscribers.
=head2 on
my $cb = $e->on(foo => sub {...});
Subscribe to event.
$e->on(foo => sub {
my ($e, @args) = @_;
...
});
=head2 once
my $cb = $e->once(foo => sub {...});
Subscribe to event and unsubscribe again after it has been emitted once.
$e->once(foo => sub {
my ($e, @args) = @_;
...
});
=head2 subscribers
my $subscribers = $e->subscribers('foo');
All subscribers for event.
# Unsubscribe last subscriber
$e->unsubscribe(foo => $e->subscribers('foo')->[-1]);
=head2 unsubscribe
$e = $e->unsubscribe('foo');
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