Bool

Primitive 9 v393

About This Type

Boolean value: true or false.

Used for flags and binary state.

Encoding: 1 byte: 0x00 = false, 0x01 = true.

Primitive Type

Name: Bool
Byte Size: 1 byte
SCALE Encoding: Fixed-width, little-endian

SCALE Encoding

Rule: Fixed 1 byte: 0x00 = false, 0x01 = true.
Size: 1 byte

Examples

true

0x01

01 true

false

0x00

00 false

Code Examples

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

const registry = new TypeRegistry();

// Encode a Bool value
const value = registry.createType("Bool", true);
console.log("Hex:", value.toHex());
console.log("Bytes:", value.toU8a());

Type Information

Type ID: 9
Kind: Primitive
Runtime: v393

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