[u8; 12]

Array 186 v393

About This Type

Fixed-length array of 12 u8 values.

Always exactly 12 elements. No length prefix needed since the size is known at compile time.

Encoding: 12 elements encoded consecutively, no length prefix.

Fixed-Length Array

Element Type
u8
Length
12
SCALE Encoding
Fixed-length (12 x element size bytes)

SCALE Encoding

Rule
12 elements encoded consecutively, no length prefix (size known at compile time).
Size
12 bytes

Examples

12-byte array = [u8; 12]
0xxxxxxxxx...
12 raw bytes 12 bytes concatenated, no prefix

Code Examples

import { TypeRegistry } from "@polkadot/types";

const registry = new TypeRegistry();

// Encode a [u8; 12]
const arr = registry.createType("[u8; 12]", new Uint8Array(12));
console.log("Hex:", arr.toHex());

Referenced By (2)

Type Information

Type ID
186
Kind
Array
Runtime
v393