The Generic Package Containers.Indefinite_Doubly_Linked_Lists
Author: JTC1/SC22/WG9/ARG, by Randall Brukardt, ARG Editor

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# A.18.12 The Generic Package Containers.Indefinite_Doubly_Linked_Lists

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The language-defined generic package Containers.Indefinite_Doubly_Linked_Lists provides private types List and Cursor, and a set of operations for each type. It provides the same operations as the package Containers.Doubly_Linked_Lists (see A.18.3), with the difference that the generic formal Element_Type is indefinite.

#### Static Semantics

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The declaration of the generic library package Containers.Indefinite_Doubly_Linked_Lists has the same contents and semantics as Containers.Doubly_Linked_Lists except:
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The generic formal Element_Type is indefinite.
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The procedure with the profile:
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procedure Insert (Container : in out List;
Before : in Cursor;
Position : out Cursor;
Count : in Count_Type := 1);
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is omitted.
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The actual Element parameter of access subprogram Process of Update_Element may be constrained even if Element_Type is unconstrained.

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