Last Updated
：2025/12/06
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。
（ plural ）
Quizzes for review
(computing) Any of the 16 Unicode planes located above Plane 0 (the BMP) and requiring the use of surrogate pairs to encode in UTF-16 (Planes 1 through 16, collectively covering the range of code points from U+10000 through U+10FFFF).
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supplementary plane
When implementing UTF-16, characters in a supplementary plane must be encoded using surrogate pairs.
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When implementing UTF-16, characters in a supplementary plane must be encoded using surrogate pairs.
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