[−][src]Struct pallet_randomness_collective_flip::Module
Implementations
impl<T: Trait + 'static> Module<T>
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pub fn random_material() -> Vec<T::Hash>
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Series of block headers from the last 81 blocks that acts as random seed material. This
is arranged as a ring buffer with block_number % 81
being the index into the Vec
of
the oldest hash.
Trait Implementations
impl<T: Trait> Callable<T> for Module<T>
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impl<T: Clone + Trait> Clone for Module<T>
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impl<T: Copy + Trait> Copy for Module<T>
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impl<T: Trait> Debug for Module<T> where
T: Debug,
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T: Debug,
impl<T: Eq + Trait> Eq for Module<T>
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impl<T: Trait> IntegrityTest for Module<T>
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fn integrity_test()
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impl<T: Trait> ModuleErrorMetadata for Module<T>
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fn metadata() -> &'static [ErrorMetadata]
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impl<T: Trait> OffchainWorker<<T as Trait>::BlockNumber> for Module<T>
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fn offchain_worker(_n: BlockNumber)
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impl<T: Trait> OnFinalize<<T as Trait>::BlockNumber> for Module<T>
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fn on_finalize(_n: BlockNumber)
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impl<T: Trait> OnInitialize<<T as Trait>::BlockNumber> for Module<T>
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fn on_initialize(block_number: T::BlockNumber) -> Weight
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impl<T: Trait> OnRuntimeUpgrade for Module<T>
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fn on_runtime_upgrade() -> u64
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impl<T: PartialEq + Trait> PartialEq<Module<T>> for Module<T>
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impl<T: Trait> Randomness<<T as Trait>::Hash> for Module<T>
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fn random(subject: &[u8]) -> T::Hash
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This randomness uses a low-influence function, drawing upon the block hashes from the previous 81 blocks. Its result for any given subject will be known far in advance by anyone observing the chain. Any block producer has significant influence over their block hashes bounded only by their computational resources. Our low-influence function reduces the actual block producer's influence over the randomness, but increases the influence of small colluding groups of recent block producers.
WARNING: Hashing the result of this function will remove any low-influence properties it has
and mean that all bits of the resulting value are entirely manipulatable by the author of
the parent block, who can determine the value of parent_hash
.
fn random_seed() -> Output
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impl<T: Trait> StructuralEq for Module<T>
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impl<T: Trait> StructuralPartialEq for Module<T>
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Auto Trait Implementations
impl<T> RefUnwindSafe for Module<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<T> Send for Module<T> where
T: Send,
T: Send,
impl<T> Sync for Module<T> where
T: Sync,
T: Sync,
impl<T> Unpin for Module<T> where
T: Unpin,
T: Unpin,
impl<T> UnwindSafe for Module<T> where
T: UnwindSafe,
T: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> CheckedConversion for T
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fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,
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Self: TryFrom<T>,
fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,
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Self: TryInto<T>,
impl<T> DynClone for T where
T: Clone,
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T: Clone,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> IsType<T> for T
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fn from_ref(t: &T) -> &T
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fn into_ref(&self) -> &T
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fn from_mut(t: &mut T) -> &mut T
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fn into_mut(&mut self) -> &mut T
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impl<T, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,
fn from_ref(outer: &Outer) -> &T
Get a reference to the inner from the outer.
fn from_mut(outer: &mut Outer) -> &mut T
Get a mutable reference to the inner from the outer.
impl<T> MaybeDebug for T where
T: Debug,
T: Debug,
impl<T> MaybeDebug for T where
T: Debug,
T: Debug,
impl<T> MaybeRefUnwindSafe for T where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<T> Member for T where
T: 'static + Clone + PartialEq<T> + Eq + Send + Sync + Debug,
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T: 'static + Clone + PartialEq<T> + Eq + Send + Sync + Debug,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T> SaturatedConversion for T
fn saturated_from<T>(t: T) -> Self where
Self: UniqueSaturatedFrom<T>,
Self: UniqueSaturatedFrom<T>,
fn saturated_into<T>(self) -> T where
Self: UniqueSaturatedInto<T>,
Self: UniqueSaturatedInto<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,
T: UncheckedFrom<S>,
fn unchecked_into(self) -> T
impl<T, S> UniqueSaturatedInto<T> for S where
S: TryInto<T>,
T: Bounded,
S: TryInto<T>,
T: Bounded,
fn unique_saturated_into(self) -> T
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,