Last Updated：2025/11/28
Sentence
そのランタイムではクロージャは第一級だが、ファイル記述子は第一級でない値のままである。
Quizzes for review
Although closures are first-class, file descriptors remain a second-class value in that runtime.
See correct answer
Although closures are first-class, file descriptors remain a second-class value in that runtime.
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Related words
second-class value
Noun
Japanese Meaning
プログラミングにおける「第二級オブジェクト」と同義。第一級オブジェクトに比べ操作や取り扱いに制限があり、関数や変数のように自由に扱えない値を指す。
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