ylefi
ylefi is a fictional programming language and runtime used in computer science education and exploratory software design. In the following description, ylefi is treated as if it were a real technology to illustrate language-development concepts, its pedagogy, and potential applications. The project emphasizes clarity, safety, and gradual exposure to abstractions such as types, modules, and concurrency.
Design and features. ylefi is designed to be approachable for beginners while offering modern language capabilities.
History and development. The project originated in 2018–2019 through an international collaboration of educators and researchers.
Usage and reception. In teaching contexts, ylefi is used to illustrate core concepts such as immutability, type