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Dec 14, 2023 · Informally, a type system is sound if you can't create runtime type errors, i.e. you can't assign a String to an Int. To clarify, you can type up a program which assigns a value of type String to a variable of type Int, but the type-checker will reject it and the compiler won't compile it.
- Formally, if a language is sound, for all programs $P$ , types T and values v that can possibly exist in this language, if $P$ is well-typed and an...
- A language has a sound type system if every well-typed program behaves as defined by the language's semantics during execution, avoiding runtime ty...
- Soundness is a property of a type system. A type system assigns a type to a program (or expression). The assignment is sound when indeed the evalua...
Jun 9, 2023 · Unsoundness is a necessary, but not sufficient, property to have the adverse consequences associated with it. Languages with intentionally unsound type systems are making trade-offs for better expressivity, for performance, or for compatibility, and these consequences are generally explicitly known.
- Java accidentally had an unsound type system for a decade , and nobody noticed or cared (except, eventually, Nada Amin). It had no consequences and...
- Here's a straightforward definition that may be practically useful for language designers: A static type system is sound if, whenever an expression...
- Well, there's a whole web site — Counterexamples in Type Systems — that lists all main sources of unsoundness in type systems and their consequence...
A sound argument is one that is not only valid, but begins with premises that are actually true. The example given about toasters is valid, but not sound. However, the following argument is both valid and sound: In some states, no felons are eligible voters, that is, eligible to vote.
UNSOUND definition: 1. If a person's activities or judgment are unsound, they are not good enough, acceptable, or able…. Learn more.
If a building or other structure is unsound, it is in bad condition and likely to fall down or fail: The bridge is one of several said to be structurally unsound. Synonyms. shaky (WEAK) unstable. SMART Vocabulary: related words and phrases. Unsafe and insecure. appealingly. at stake idiom.
Sep 13, 2018 · Unsound static analyzers allow developers to quickly find defects in a large code base. Sound static analyzers guarantee finding all defects of a given kind, albeit with additional effort.
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There are 12 meanings listed in OED's entry for the adjective unsound, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.
