FileBackedHashSetT(String, IEnumerableT) Constructor

Creates a new instance of the FileBackedHashSetT class.

Namespace: GSF.Collections
Assembly: GSF.Core (in GSF.Core.dll) Version: 2.4.207-beta+1781b796b2aa7a54013a031eb432fe4ccee31867

Syntax

C++

JavaScript

Copy

public FileBackedHashSet(
	string filePath,
	IEnumerable<T> enumerable
)

Public Sub New ( 
	filePath As String,
	enumerable As IEnumerable(Of T)
)

public:
FileBackedHashSet(
	String^ filePath, 
	IEnumerable<T>^ enumerable
)

new : 
        filePath : string * 
        enumerable : IEnumerable<'T> -> FileBackedHashSet

GSF.Collections.FileBackedHashSet = function(filePath, enumerable);

View Source

Parameters

filePath String: The path to the file used to store the lookup table.
enumerable IEnumerableT: The enumerable whose elements are copied to this hash set.

Exceptions

Exception	Condition
ArgumentException	filePath is a zero-length string, contains only white space, or contains one or more invalid characters as defined by GetInvalidPathChars.
ArgumentNullException	filePath is null or enumerable is null.
InvalidOperationException	T cannot be serialized.

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.

Reference

FileBackedHashSetT Class

FileBackedHashSetT Overload

GSF.Collections Namespace