Typematched

Typematched is a term used in programming and software development to describe a situation where the types of data being processed or compared are compatible. This compatibility can manifest in several ways, such as direct equality of types, or through implicit or explicit type conversions that allow operations to proceed without error. When code is typematched, it suggests that the type system of the language is being respected, leading to more predictable and robust behavior.

Conversely, a lack of typematching can result in type errors, which are common issues in programming. These errors occur when a program attempts to perform an operation on data of an incompatible type. For instance, trying to add a string to an integer in a language that strictly enforces types would typically raise a type error. Developers often strive for typematching to prevent such runtime problems and to ensure that their code is easier to understand and maintain. Static typing systems, in particular, aim to catch typematching issues during the compilation phase, before the program is even run. Dynamic typing systems, on the other hand, check for type compatibility at runtime.