Ada Programming/Delimiters/box

From Wikibooks, open books for an open world
Jump to navigation Jump to search

The title given to this book is incorrect due to technical limitations. The correct title is Ada Programming/Delimiters/<>.

The box <> is a placeholder for something not (yet) fully specified.


  • In array declaration
type Some_Array is (Integer range <>) of Some_Type;

Declare an array type with bounds known only at runtime.

  • a type that has unknown discriminants
type T (<>) is private;
  • Generic declaration of a discrete type
  type T is (<>);

It means that T must be a discrete type: either an enumeration, a range, or a modular type.

  • component association in Ada 2005
Some_Rec_Type'(others => <>);
  • partial parameterization of generics in Ada 2005
  with package P is new G
     (Param_1 => T,
      others => <>);

See also[edit]


Ada Reference Manual[edit]