asInt64List method - ByteBuffer class - dart:typed_data library (original) (raw)

asInt64List abstract method

Int64List asInt64List([

1. int offsetInBytes = 0,
2. int? length ])

Creates a Int64List view of a region of this byte buffer.

The view is backed by the bytes of this byte buffer. Any changes made to the Int64List will also change the buffer, and vice versa.

The viewed region start at offsetInBytes, which must be 64-bit aligned, and contains length 64-bit integers with the same endianness as the host (Endian.host). If length is omitted, the range extends as far towards the end of the buffer as possible - if lengthInBytes is not divisible by eight, the last bytes can't be part of the view.

The start index and length must describe a valid 64-bit aligned range of the buffer:

• offsetInBytes must not be negative,
• offsetInBytes must be divisible by eight,
• length must not be negative, and
• offsetInBytes + length * 8 must not be greater than lengthInBytes.

Implementation

Int64List asInt64List([int offsetInBytes = 0, int? length]);