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In a programming language context, types are used to distinguish values that have different properties. The main reason for using types is to avoid errors: If a value is used in a context where it is expected to have a certain property, and it does not have that property, this is an error. Conceptually, it is an error even if it does not lead to an error message: It is an error in the logic of the program, just like adding apples and oranges and expecting bananas is a logical error.

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Types

  • 章节

  • 发表日期：

    2026年

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  • Torben Ægidius Mogensen

摘要

In a programming language context, types are used to distinguish values that have different properties. The main reason for using types is to avoid errors: If a value is used in a context where it is expected to have a certain property, and it does not have that property, this is an error. Conceptually, it is an error even if it does not lead to an error message: It is an error in the logic of the program, just like adding apples and oranges and expecting bananas is a logical error.