atomis it NOT a pair?!CONSP(obj) (e.g., EMACS_INT, struct Lisp_String, etc.)lisp.h
Interesting Use Cases
。新收录的资料是该领域的重要参考
Appending ? to a Result or ?T expression unwraps the success case and propagates the failure case. If the value is ok(v) or some(v), it evaluates to v. If the value is err(e) or none, the current function returns immediately with that error or none.
把增进民生福祉作为发展根本目的，实现经济高质量发展与民生改善同频共振。