UIntPtr.Subtraction(UIntPtr, Int32) Operador

Definición

Espacio de nombres:
System
Ensamblado:
System.Runtime.dll
Ensamblados:
mscorlib.dll, System.Runtime.dll
Ensamblados:
mscorlib.dll, netstandard.dll
Ensamblado:
mscorlib.dll
Ensamblado:
netstandard.dll

Resta un desplazamiento del valor de un puntero sin signo.Subtracts an offset from the value of an unsigned pointer.

public:
 static UIntPtr operator -(UIntPtr pointer, int offset);
public static UIntPtr operator - (UIntPtr pointer, int offset);
static member ( - ) : unativeint * int -> unativeint
Public Shared Operator - (pointer As UIntPtr, offset As Integer) As UIntPtr

Parámetros

pointer
UIntPtr

Puntero sin signo del que se va a restar el desplazamiento.The unsigned pointer to subtract the offset from.

offset
Int32

Desplazamiento que se va a restar.The offset to subtract.

Devoluciones

UIntPtr

Nuevo puntero sin signo que es el resultado de restar offset de pointer.A new unsigned pointer that reflects the subtraction of offset from pointer.

Comentarios

El Subtraction método define la operación de resta de UIntPtr objetos.The Subtraction method defines the subtraction operation for UIntPtr objects. Permite el código como el siguiente.It enables code such as the following.

int[] arr = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
UIntPtr ptr = (UIntPtr) arr[arr.GetUpperBound(0)];
for (int ctr = 0; ctr <= arr.GetUpperBound(0); ctr++)
{
   UIntPtr newPtr = ptr - ctr;
   Console.Write("{0}   ", newPtr);
}

Dim arr() As Integer = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
Dim ptr As UIntPtr = CType(arr(arr.GetUpperBound(0)), UIntPtr)
For ctr As Integer= 0 To arr.GetUpperBound(0)
   Dim newPtr As UIntPtr = UIntPtr.Subtract(ptr, ctr)
   Console.Write("{0}   ", newPtr)
Next

Los lenguajes que no admiten operadores personalizados pueden llamar al Subtract método en su lugar.Languages that do not support custom operators can call the Subtract method instead.

La operación de resta no inicia una excepción si el resultado es demasiado pequeño para representarse como un puntero en la plataforma especificada.The subtraction operation does not throw an exception if the result is too small to represent as a pointer on the specified platform. En su lugar, se realiza en un contexto no comprobado.Instead, it is performed in an unchecked context.

Se aplica a

Consulte también