MI == multiple inheritance
What he is basically saying is instead of having something like:
sub new {
my ($class, %args) = @_;
my $self = bless( {}, $class );
foreach my $k ( keys(%args) ) {
$self{$k} = $args{$k};
}
return( $self );
}
do something like:
sub new {
my ($class, %args) = @_;
my $self = bless( {}, $class );
$self->init(%args);
return( $self );
}
sub init {
my ($self, %args) = @_;
foreach my $k ( keys(%args) ) {
$$self{$k} = $args{$k};
}
# anyother initialization here
}
This makes a clean separation between the construction and the initialization with no real downside.
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