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3.4 Lambda Lists

A lambda list is a list that specifies a set of parameters (sometimes called lambda variables) and a protocol for receiving values for those parameters.

There are several kinds of lambda lists.

Context Kind of Lambda List
defun form ordinary lambda list
defmacro form macro lambda list
lambda expression ordinary lambda list
flet local function definition ordinary lambda list
labels local function definition ordinary lambda list
handler-case clause specification ordinary lambda list
restart-case clause specification ordinary lambda list
macrolet local macro definition macro lambda list
define-method-combination ordinary lambda list
define-method-combination :arguments option define-method-combination arguments lambda list
defstruct :constructor option boa lambda list
defgeneric form generic function lambda list
defgeneric method clause specialized lambda list
defmethod form specialized lambda list
defsetf form defsetf lambda list
define-setf-expander form macro lambda list
deftype form deftype lambda list
destructuring-bind form destructuring lambda list
define-compiler-macro form macro lambda list
define-modify-macro form define-modify-macro lambda list

Figure 3.10: What Kind of Lambda Lists to Use

The next figure lists some defined names that are applicable to lambda lists.

lambda-list-keywords lambda-parameters-limit

Figure 3.11: Defined names applicable to lambda lists