Last Updated :2025/11/28

null object

Noun
Japanese Meaning
(圏論) 初始対象かつ終対象となる対象 / (オブジェクト指向プログラミング) 何もしないオブジェクト。nullの代わりに使用される
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アーベル群の圏では、自明群は零対象として機能し、初対象でもあり終対象でもあります。

plural

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(category theory) An object that is both an initial and terminal object. / (object-oriented programming) An object that does nothing and is used instead of using a null.

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null object

In the category of abelian groups, the trivial group serves as a null object, being both an initial and a terminal object.

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In the category of abelian groups, the trivial group serves as a null object, being both an initial and a terminal object.

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