DescriptionEdit
X'Last, where X is any scalar subtype (for example integer, enumerated, real), is an attribute that represents the last value (upper bound) in the range of X.
A'Last, where A is an array, denotes the last index value. For more-dimensional arrays, A'Last(N) denotes the last index value of the Nth dimension (N must be static).
ExampleEdit
type My_Enum is (Enum1, Enum2, Enum3); type My_Int is range -1 .. 5; ... pragma Assert (My_Enum'Last = Enum3); -- OK pragma Assert (My_Int'Last = 5); -- OK pragma Assert (My_Int'Last = 4); -- Wrong!