ZarahDB..::..Exists Method (Uri, String, String, Nullable<(Of <(<'Boolean>)>)>)

Tests if the specified key exists.

Namespace:  ZarahDB_Library
Assembly:  ZarahDB_Library (in ZarahDB_Library.dll)

Syntax


public static bool Exists(
	Uri instance,
	string table,
	string key,
	Nullable<bool> checkExactMatch
)
Public Shared Function Exists ( _
	instance As Uri, _
	table As String, _
	key As String, _
	checkExactMatch As Nullable(Of Boolean) _
) As Boolean
public:
static bool^ Exists(
	Uri^ instance, 
	String^ table, 
	String^ key, 
	Nullable<bool^> checkExactMatch
)

Parameters

instance
Type: Uri
The instance.
table
Type: String
The table.
key
Type: String
The key.
checkExactMatch
Type: Nullable<(Of <(<'Boolean>)>)>
Key collisions are possible. if set to true the file is checked to contain the exact key if there is any chance of collision. Set this to false for the fastest execution when key collisions are known not to exist.

Return Value

System.Boolean