(texinfo)Data Types


Data Types
----------

  Here is the command for data types:

`@deftp CATEGORY NAME ATTRIBUTES...'
     The `@deftp' command is the generic definition command for data
     types.  The command is written at the beginning of a line and is
     followed on the same line by the category, by the name of the type
     (which is a word like `int' or `float'), and then by names of
     attributes of objects of that type.  Thus, you could use this
     command for describing `int' or `float', in which case you could
     use `data type' as the category.  (A data type is a category of
     certain objects for purposes of deciding which operations can be
     performed on them.)

     In Lisp, for example,  "pair" names a particular data type, and an
     object of that type has two slots called the CAR and the CDR.
     Here is how you would write the first line of a definition of
     `pair'.

          @deftp {Data type} pair car cdr
          ...
          @end deftp

     The template is:

          @deftp CATEGORY NAME-OF-TYPE ATTRIBUTES...
          BODY-OF-DEFINITION
          @end deftp

     `@deftp' creates an entry in the index of data types.


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