- $this->removed = $this->m > 0 ? array_fill( 0, $this->m, true ) : array();
- $this->added = $this->n > 0 ? array_fill( 0, $this->n, true ) : array();
+ $this->removed = $this->m > 0 ? array_fill( 0, $this->m, true ) : [];
+ $this->added = $this->n > 0 ? array_fill( 0, $this->n, true ) : [];