Gemstone IO Library
File
Creates a new instance of the FileBackedDictionaryTKey, TValue class.
Definition
Namespace: Gemstone.IO.Collections
Assembly: Gemstone.IO (in Gemstone.IO.dll) Version: 1.0.128 -- Release Build+2960d3f3619fdc53cad514a51817286dcfb19027
Assembly: Gemstone.IO (in Gemstone.IO.dll) Version: 1.0.128 -- Release Build+2960d3f3619fdc53cad514a51817286dcfb19027
C#
public FileBackedDictionary(
string filePath
)VB
Public Sub New (
filePath As String
)C++
public:
FileBackedDictionary(
String^ filePath
)JavaScript
Gemstone.IO.Collections.FileBackedDictionary = function(filePath);Parameters
- filePath String
- The path to the file used to store the lookup table.
Remarks
This constructor uses the default equality comparer for file backed lookup tables,
which is not the same as the default equality comparer for TKey
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
| 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. |
| InvalidOperationException | Either TKey or TValue cannot be serialized. |