Type Alias pallet_migrations::pallet::Historic

pub type Historic<T: Config> = StorageMap<_GeneratedPrefixForStorageHistoric<T>, Twox64Concat, IdentifierOf<T>, (), OptionQuery>;

Set of all successfully executed migrations.

This is used as blacklist, to not re-execute migrations that have not been removed from the codebase yet. Governance can regularly clear this out via clear_historic.

Storage type is [StorageMap] with key type IdentifierOf < T > and value type ().

Aliased Type

struct Historic<T: Config>(/* private fields */);