const arr = new Uint16Array(2);
arr[0] = 5000;
arr[1] = 4000;
// Copies the contents of `arr`.
const buf1 = Buffer.from(arr);
// Shares memory with `arr`.
const buf2 = Buffer.from(arr.buffer);
console.log(buf1, buf2 );
// Prints: <Buffer 88 a0>
// Prints: <Buffer 88 13 a0 0f>
i look at the nodejs document where i see that and my question is why buf1 is not <Buffer 88 13 a0 0f> ?
It is explained here that Buffer.from
behaves as new Uint8Array()
which can only contain numbers from 0
to 255
(1 byte) and here is stated that each value is converted and the result array length will be the same (so it can't have 4 elements). When converted, 2 byte value will be trimmed to 1 byte value, ignoring the second byte (88 13 -> 88
, a0 0f -> a0
).