make-instance

(make-instance 'class-name :initarg value ...)

Creates an instance of a defclass class. Slots are supplied by their :initarg keywords (defaulting to the slot-name keyword); an unsupplied slot takes its :initform (or nil). A literal quoted class name naming a class defined by defclass compiles to a direct constructor call. A COMPUTED class also works — a name symbol built at run time ((make-instance (intern (format nil "~A-~A" style '#:reporter) package) ...), matched under either the pkg:name or the pkg::name spelling, so the class need not be exported) or the metaobject find-class answers — and so does #'make-instance as a value; both dispatch at run time over the classes the program defines. On the compiled backends that SET is fixed at compile time: a class built from runtime data does not exist.