.. _structures-glossary:

Glossary
--------

structure:
   A collection of data grouped together and treated as a single object.

instance variable:
   One of the named pieces of data that make up a structure.

reference:
   A value that indicates or refers to a variable or structure. In a
   state diagram, a reference appears as an arrow.

pass by value:
   A method of parameter-passing in which the value provided as an
   argument is copied into the corresponding parameter, but the
   parameter and the argument occupy distinct locations.

pass by reference:
   A method of parameter-passing in which the parameter is a reference
   to the argument variable. Changes to the parameter also affect the
   argument variable.


.. tb-match::
   :name: chapter_eight_glossary

   Match the definition to the term.

   structure
      A collection of data grouped together and treated as a single object.
   instance variable
      One of the named pieces of data that make up a structure.
   reference
      A value that indicates or refers to a variable or structure.
   pass by value
      A method of parameter-passing in which the value provided as an argument is copied into the corresponding parameter, but the parameter and the argument occupy distinct locations.
   pass by reference
      A method of parameter-passing in which the parameter is a reference to the argument variable. Changes to the parameter also affect the argument variable.