Last Updated
：2025/12/02
narrowing conversion
Noun
Japanese Meaning
型変換の一種で、元のデータ型よりも格納領域が小さいデータ型へ変換する際に、情報の一部を失う可能性がある処理（主にプログラミングにおいて用いられる）
（ plural ）
Quizzes for review
(programming) A conversion from one data type to another where the new data type’s size is smaller than the old one’s, such that the conversion may result in loss of information.
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narrowing conversion
When you cast a 64-bit integer to a 32-bit integer, you risk a narrowing conversion that can truncate significant bits.
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When you cast a 64-bit integer to a 32-bit integer, you risk a narrowing conversion that can truncate significant bits.
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