operator - method - Uint8Pointer extension - dart:ffi library (original) (raw)

1. @Since('3.3')

Pointer<Uint8> operator -(

1. int offset )

A pointer to the offsetth Uint8 before this one.

Equivalent to this + (-offset).

Returns a pointer to the Uint8 whose address isoffset times the size of Uint8 before the address of this pointer. That is, (this - offset).address == this.address - offset * sizeOf<Uint8>().

Also, (this - offset).value is equivalent to this[-offset], and similarly for setting,

Implementation

@Since('3.3')
@pragma("vm:prefer-inline")
Pointer<Uint8> operator -(int offset) =>
    Pointer.fromAddress(address - sizeOf<Uint8>() * offset);