Last Updated：2025/12/06
Sentence
UTF-16を実装する際、補助平面（基本多言語面の上にある16のUnicode面のいずれか、コードポイントU+10000〜U+10FFFF）にある文字はサロゲートペアを使ってエンコードする必要があります。
Quizzes for review
When implementing UTF-16, characters in a supplementary plane must be encoded using surrogate pairs.
See correct answer
When implementing UTF-16, characters in a supplementary plane must be encoded using surrogate pairs.
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Related words
supplementary plane
Noun
Japanese Meaning
Supplementary plane は、コンピューティングの分野で、基本多言語面（BMP、平面0）より上位に位置する16のUnicode平面のいずれかを指します。これらは、UTF-16での符号化時にサロゲートペアを必要とし、平面1から平面16までが該当し、コードポイントの範囲はU+10000からU+10FFFFとなります。
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