This function is occasionally useful as an argument to other functions that require functions as arguments. (Got that?)
The object is returned as the value of identity.
Many other constructs in Common Lisp have the behavior of identity when given a single argument. For example, one might well use values in place of identity. However, writing values of a single argument conventionally indicates that the argument form might deliver multiple values and that the intent is to pass on only the ﬁrst of those values.
Returns a function that will always return the object. The returned function takes any number of arguments.
A dubious shortcut for (function (lambda ...)) or #’(lambda ...).