by an interpreter written in a mixture of pure LISP and English. The distinction between programs and data is blurred. Higher-order functions, assignment
2009-08-20 [2011-12-19]. (原始内容存档于2009-08-26). Scheme has the unhappy distinction of being the world's most unportable programming language. It is almost
futures and promises, which differ from general logic variables in that a distinction is made between reading and writing them. Bidirectional unification can