AlphaMapLastKey

Storage Plain v334 → current

Last key used for Alpha storage map iteration.

Queried by: developers

The Big Picture

The Alpha storage map can be very large. This marker helps with pagination and efficient iteration over all alpha stake positions.

Use Cases

Resume Alpha map iteration from last position
Build paginated Alpha queries

Purpose & Usage

Purpose

Supports efficient iteration over the Alpha storage map.

Common Query Patterns

Single value query
Used internally for pagination

Stored Value

Option

value (Option)

Code Examples

import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";

const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });

// Query AlphaMapLastKey storage (no keys - plain value)
const result = await api.query
  [stringCamelCase("SubtensorModule")]
  [stringCamelCase("AlphaMapLastKey")]();
console.log("AlphaMapLastKey:", result.toHuman());

Runtime Info

View Source

Pallet: SubtensorModule
Storage Kind: Plain
First Version: v334
Current Version: v393

Back to SubtensorModule Storage