Common Lisp has various equality functions: =, eq, eql, equal, equalp, string-equal, char-equal… but what are the differences?? We tell you everything, with examples. As usual, this is best read on the Common Lisp Cookbook (a new page added on August, 2024). This is where it will get the updates. In short: = is only for numbers and equal is the equality predicate that works on many things. you can’t overload built-in operators such as = or equal for your own classes, unless you use a libr...
