Last Updated
：2025/12/05
value restriction
Noun
uncountable
Japanese Meaning
コンピュータ科学・型理論において、関数型言語でプログラムの型安全性を確保するため、コンパイル時に評価可能な構文的な値にのみ多相型が推論される制約。（値に対する制限、すなわち『値制限』と呼ばれる）
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(computer science, type theory) In a functional language, inference of a polymorphic type only for syntactic values (values that can be evaluated at compile time) to ensure that a program is type-safe.
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value restriction
To ensure type safety, the compiler applies a value restriction that only generalizes polymorphic types for syntactic values.
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To ensure type safety, the compiler applies a value restriction that only generalizes polymorphic types for syntactic values.
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