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(guile.info)Procedure Properties

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Procedure Properties and Metainformation
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 - primitive: procedure-properties proc
     Return OBJ's property list.

 - primitive: procedure-property p k
     Return the property of OBJ with name KEY.

 - primitive: set-procedure-properties! proc new_val
     Set OBJ's property list to ALIST.

 - primitive: set-procedure-property! p k v
     In OBJ's property list, set the property named KEY to VALUE.

 - primitive: procedure-documentation proc
     Return the documentation string associated with `proc'.  By
     convention, if a procedure contains more than one expression and
     the first expression is a string constant, that string is assumed
     to contain documentation for that procedure.

 - primitive: closure? obj

 - primitive: procedure? obj

 - primitive: thunk? obj

 - primitive: set-source-properties! obj plist

 - primitive: set-source-property! obj key datum

 - primitive: source-properties obj

 - primitive: source-property obj key