��ということです。</p>
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Strong references are how you can share ownership of an `Rc<T>` instance. Weak
references don’t express an ownership relationship. They won’t cause a
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<p>強い参照は、<code>Rc&lt;T&gt;</code>インスタンスの所有権を共有する方法です。弱い参照は、所有権関係を表現しません。
ひとたび、関