Use FORMAT. ~{ and ~} denote iteration, ~A denotes aesthetic printing, and ~^ (aka Tilde Circumflex in the docs) denotes printing the , only when something follows it. * (format nil “~{~A~^, ~}” ‘( 1 2 3 4 )) “1, 2, 3, 4” *
#’foo is an abbreviation for (function foo) by the reader. In CL, there are several different namespaces, #’foo or (function foo) will return the functional value of foo. You may want to search for “Lisp-1 vs. Lisp-2”, check other Stackoverflow questions, or read an old article by Pitman and Gabriel in order to learn more … Read more
In Common Lisp, both flet and labels make lexical bindings of slightly different sorts: flet is a special form for local function binding. Bindings are not recursive and cannot refer to each other. Each binding contains function name, arguments, and function body. labels is a special form for local function binding. Bindings can be recursive … Read more
Originally, in Lisp, there were no lexical variables — only dynamic ones. And there was no SETQ or SETF, just the SET function. What is now written as: (setf (symbol-value ‘*foo*) 42) was written as: (set (quote *foo*) 42) which was eventually abbreviavated to SETQ (SET Quoted): (setq *foo* 42) Then lexical variables happened, and … Read more