Module frame_support::storage::types

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

Structs

OptionQuery	Implement QueryKindTrait with query being Option<Value>
StorageDoubleMap	A type that allow to store values for (key1, key2) couple. Similar to StorageMap but allow to iterate and remove value associated to first key.
StorageMap	A type that allow to store value for given key. Allowing to insert/remove/iterate on values.
StorageValue	A type that allow to store a value.
ValueQuery	Implement QueryKindTrait with query being Value

Traits

QueryKindTrait	Trait implementing how the storage optional value is converted into the queried type.
StorageDoubleMapMetadata	Part of storage metadata for a storage double map.
StorageMapMetadata	Part of storage metadata for a storage map.
StorageValueMetadata	Part of storage metadata for storage value.