�ンタにはもう1つ違いがあります。参照はデータを借用するだけのポインタなのです。
対照的に多くの場合、スマートポインタは指しているデータを<em>所有</em>します。</p>
<!--
We’ve already encountered a few smart pointers in this book, such as `String`
and `Vec<T>` in Chapter 8, although we didn’t call them smart pointers at the
time. Both these types count as smart pointers because they own some memory and
allow you to manipulate it. They a