CLHS: Standard Generic Function FUNCTION-KEYWORDS

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Standard Generic Function FUNCTION-KEYWORDS

Syntax:

function-keywords method => keys, allow-other-keys-p

Method Signatures:

function-keywords (method standard-method)

Arguments and Values:

method---a method.

keys---a list.

allow-other-keys-p---a generalized boolean.

Description:

Returns the keyword parameter specifiers for a method.

Two values are returned: a list of the explicitly named keywords and a generalized boolean that states whether `&allow-other-keys` had been specified in the method definition.

Examples:

     (defmethod gf1 ((a integer) &optional (b 2)
                     &key (c 3) ((:dee d) 4) e ((eff f)))
       (list a b c d e f))
    =>  #<STANDARD-METHOD GF1 (INTEGER) 36324653>
     (find-method #'gf1 '() (list (find-class 'integer)))
    =>  #<STANDARD-METHOD GF1 (INTEGER) 36324653>
     (function-keywords *)
    =>  (:C :DEE :E EFF), false
     (defmethod gf2 ((a integer))
       (list a b c d e f))
    =>  #<STANDARD-METHOD GF2 (INTEGER) 42701775>
     (function-keywords (find-method #'gf1 '() (list (find-class 'integer))))
    =>  (), false
     (defmethod gf3 ((a integer) &key b c d &allow-other-keys)
       (list a b c d e f))
     (function-keywords *)
    =>  (:B :C :D), true

Affected By:

defmethod

Exceptional Situations: None.

See Also:

defmethod

Notes: None.

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