Module frame_support::storage[][src]

Expand description

Stuff to do with the runtime’s storage.

Re-exports

pub use self::types::StorageEntryMetadataBuilder;

Modules

Traits, types and structs to support a bounded BTreeMap.

Traits, types and structs to support a bounded BTreeSet.

Traits, types and structs to support putting a bounded vector into storage, as a raw value, map or a double map.

Operation on runtime child storages.

Operation on runtime storage using hashed keys.

Some utilities for helping access storage with arbitrary key types.

Storage types to build abstraction on storage, they implements storage traits such as StorageMap and others.

Operation on unhashed runtime storage.

Traits, types and structs to support putting a bounded vector into storage, as a raw value, map or a double map.

Structs

Iterate over a prefix of a child trie and decode raw_key and raw_value into T.

A type used exclusively by storage maps as their key type.

Iterate over a prefix and decode raw_key into T.

Iterate or drain over a prefix and decode raw_key and raw_value into T.

Enums

Describes on what should happen with a storage transaction.

Traits

A strongly-typed double map in storage whose secondary keys and values can be iterated over.

A strongly-typed map in storage whose keys and values can be iterated over.

A strongly-typed map with arbitrary number of keys in storage whose keys and values can be iterated over.

Trait for specialising on removal logic of PrefixIterator.

Marker trait that will be implemented for types that support the storage::append api.

Marker trait that will be implemented for types that support to decode their length in an effificent way. It is expected that the length is at the beginning of the encoded object and that the length is a Compact<u32>.

An implementation of a map with a two keys.

A strongly-typed map in storage.

An implementation of a map with an arbitrary number of keys.

Trait for maps that store all its value after a unique prefix.

Marker trait that is implemented for types that support the storage::append api with a limit on the number of element.

A trait for working with macro-generated storage values under the substrate storage API.

Storage double map that is capable of StorageTryAppend.

Storage map that is capable of StorageTryAppend.

Storage value that is capable of StorageTryAppend.

Functions

Assert this method is called within a storage transaction. This will panic if is not called within a storage transaction.

Returns the storage prefix for a specific pallet name and storage name.

Execute the supplied function in a new storage transaction.