Module frame_support::traits [−][src]
Traits for FRAME.
NOTE: If you’re looking for parameter_types
, it has moved in to the top-level module.
Modules
schedule |
Structs
CallMetadata | The function and pallet name of the Call. |
ClearFilterGuard | Guard type for clearing all pushed constraints from a |
FilterStackGuard | Guard type for pushing a constraint to a |
SplitTwoWays | Split an unbalanced amount two ways between a common divisor. |
StorageMapShim | A shim for placing around a storage item in order to use it as a |
TestRandomness | Provides an implementation of |
WithdrawReasons | Reasons for moving funds out of an account. |
Enums
BalanceStatus | Status of funds. |
ExistenceRequirement | Simple boolean for whether an account needs to be kept in existence. |
SignedImbalance | Either a positive or a negative imbalance. |
WithdrawReason | Reason for moving funds out of an account. |
Traits
ChangeMembers | Trait for type that can handle incremental changes to a set of account IDs. |
Contains | A trait for querying whether a type can be said to “contain” a value. |
ContainsLengthBound | A trait for querying bound for the length of an implementation of |
Currency | Abstraction over a fungible assets system. |
EnsureOrigin | Some sort of check on the origin is performed by this object. |
EstimateNextNewSession | Something that can estimate at which block the next |
EstimateNextSessionRotation | Something that can estimate at which block the next session rotation will happen. This should
be the same logical unit that dictates |
Filter | Simple trait for providing a filter over a reference to some type. |
FilterStack | Trait to add a constraint onto the filter. |
FindAuthor | A trait for finding the author of a block header based on the |
Get | A trait for querying a single value from a type. |
GetCallMetadata | Gets the metadata for the Call - function name and pallet name. |
GetCallName | Gets the function name of the Call. |
Happened | A simple, generic one-parameter event notifier/handler. |
Imbalance | A trait for a not-quite Linear Type that tracks an imbalance. |
InitializeMembers | Trait for type that can handle the initialization of account IDs at genesis. |
Instance | An instance of a pallet in the storage. |
InstanceFilter | Simple trait for providing a filter over a reference to some type, given an instance of itself. |
IntegrityTest | Type that provide some integrity tests. |
IsDeadAccount | Determiner to say whether a given account is unused. |
IsType | Trait to be used when types are exactly same. |
KeyOwnerProofSystem | Something which can compute and check proofs of a historical key owner and return full identification data of that key owner. |
Lateness | Trait to be used by block producing consensus engine modules to determine how late the current block is (e.g. in a slot-based proposal mechanism how many slots were skipped since the previous block). |
Len | Anything that can have a |
LockableCurrency | A currency whose accounts can have liquidity restrictions. |
OffchainWorker | Off-chain computation trait. |
OnFinalize | The block finalization trait. Implementing this lets you express what should happen for your module when the block is ending. |
OnInitialize | The block initialization trait. Implementing this lets you express what should happen for your module when the block is beginning (right before the first extrinsic is executed). |
OnKilledAccount | The account with the given id was reaped. |
OnNewAccount | Handler for when a new account has been created. |
OnRuntimeUpgrade | The runtime upgrade trait. |
OnUnbalanced | Handler for when some currency “account” decreased in balance for some reason. |
OriginTrait | Methods available on |
PalletInfo | Provides information about the pallet setup in the runtime. |
Randomness | |
ReservableCurrency | A currency where funds can be reserved from the user. |
StoredMap | An abstraction of a value stored within storage, but possibly as part of a larger composite item. |
Time | |
TryDrop | A type for which some values make sense to be able to drop without further consideration. |
UnfilteredDispatchable | Type that can be dispatched with an origin but without checking the origin filter. |
UnixTime | Trait to deal with unix time. |
ValidatorRegistration | Implementors of this trait provide information about whether or not some validator has been registered with them. The Session module is an implementor. |
VerifySeal | A trait for verifying the seal of a header and returning the author. |
VestingSchedule | A vesting schedule over a currency. This allows a particular currency to have vesting limits applied to it. |
Type Definitions
LockIdentifier | An identifier for a lock. Used for disambiguating different locks so that they can be individually replaced or removed. |