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{20302AI95−00302−03} The package Containers is the root of the containers subsystem.
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{20302AI95−00302−03} The library package Containers has the following declaration:
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package Ada.Containers is pragma Pure(Containers);
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type Hash_Type is mod implementation−defined;
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type Count_Type is range 0 .. implementation−defined;
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end Ada.Containers;
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{20302AI95−00302−03} Hash_Type represents the range of the result of a hash function. Count_Type represents the (potential or actual) number of elements of a container.
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Implementation defined: The value of Containers.Hash_Type'Modulus. The value of Containers.Count_Type'Last.
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{20302AI95−00302−03} Hash_Type'Modulus should be at least 2**32. Count_Type'Last should be at least 2**31−−1.
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Implementation Advice: Containers.Hash_Type'Modulus should be at least 2**32. Containers.Count_Type'Last should be at least 2**31−−1.
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Discussion: This is not a requirement so that these types can be declared properly on machines with native sizes that are not 32 bits. For instance, a 24−bit target could use 2**24 for Hash_Type'Modulus.
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{20302AI95−00302−03} {extensions to Ada 95} The package Containers is new.