I generally prefer less nesting, and thus direct
return. However your example suffers from code duplication for the version that uses return(), though that's not necessary:
sub err {
{ status => 0, error => shift(@_), external_id => undef);
}
sub foo
{
my($self) = @_;
my $authentication = $self->authenticate_user();
return err('Authentication Failed') unless defined $authentication;
my $profile = $self->get_user_profile();
return err('User is not active') unless $profile->is_active;
my($external_id) = $self->find_external_id($profile);
if(! defined($external_id)){
$external_id = $self->send_profile_to_partner($profile);
}
return {status=>1, error=>undef, external_id=>$external_id};
}
Perl 6 - links to (nearly) everything that is Perl 6.