pub trait StorageDoubleMap {
type KEY1: Decode + Encode;
type KEY2: Decode + Encode;
type VALUE: Decode;
const PALLET_NAME: &str;
const STORAGE_NAME: &str;
const KEY1_HASHER: StorageHasher;
const KEY2_HASHER: StorageHasher;
// Provided methods
fn encode_partial_key(key1: Self::KEY1) -> Vec<u8> ⓘ { ... }
fn hex_encode_partial_key(key1: Self::KEY1) -> String { ... }
fn encode_storage_key(key1: Self::KEY1, key2: Self::KEY2) -> Vec<u8> ⓘ { ... }
fn hex_encode_storage_key(key1: Self::KEY1, key2: Self::KEY2) -> String { ... }
fn decode_partial_key(value: &mut &[u8]) -> Result<Self::KEY1, Error> { ... }
fn decode_storage_key(
value: &mut &[u8],
) -> Result<(Self::KEY1, Self::KEY2), Error> { ... }
fn decode_storage_value(value: &mut &[u8]) -> Result<Self::VALUE, Error> { ... }
}Required Associated Constants§
const PALLET_NAME: &str
const STORAGE_NAME: &str
const KEY1_HASHER: StorageHasher
const KEY2_HASHER: StorageHasher
Required Associated Types§
Provided Methods§
fn encode_partial_key(key1: Self::KEY1) -> Vec<u8> ⓘ
fn hex_encode_partial_key(key1: Self::KEY1) -> String
fn encode_storage_key(key1: Self::KEY1, key2: Self::KEY2) -> Vec<u8> ⓘ
fn hex_encode_storage_key(key1: Self::KEY1, key2: Self::KEY2) -> String
fn decode_partial_key(value: &mut &[u8]) -> Result<Self::KEY1, Error>
fn decode_storage_key( value: &mut &[u8], ) -> Result<(Self::KEY1, Self::KEY2), Error>
fn decode_storage_value(value: &mut &[u8]) -> Result<Self::VALUE, Error>
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.