Gemstone IO Library
File
Creates a new instance of the FileBackedHashSetT class.
Definition
Namespace: Gemstone.IO.Collections
Assembly: Gemstone.IO (in Gemstone.IO.dll) Version: 1.0.138 -- Release Build+f13f8f80c1917f967d82dedfdc2c53029991e99f
Assembly: Gemstone.IO (in Gemstone.IO.dll) Version: 1.0.138 -- Release Build+f13f8f80c1917f967d82dedfdc2c53029991e99f
C#
public FileBackedHashSet(
IEnumerable<T> enumerable
)VB
Public Sub New (
enumerable As IEnumerable(Of T)
)C++
public:
FileBackedHashSet(
IEnumerable<T>^ enumerable
)JavaScript
Gemstone.IO.Collections.FileBackedHashSet = function(enumerable);Parameters
- enumerable IEnumerableT
- The enumerable whose elements are copied to this hash set.
Remarks
This constructor uses the default equality comparer for file backed lookup tables,
which is not the same as the default equality comparer for T
objects. This is because the default implementation of GetHashCode
does not provide guarantees about consistency across platforms, or even implementations
of the CLR. Instead, the default equality comparer uses a byte-for-byte comparison to
determine equality between keys and a CRC-32 for its hash code implementation. This
means the performance of the hashing function is dependent on the performance of the
serialization function.
Exceptions
| ArgumentNullException | enumerable is null. |
| InvalidOperationException | T cannot be serialized. |