[][src]Enum frame_support::storage::child::ChildInfo

pub enum ChildInfo {
    ParentKeyId(ChildTrieParentKeyId),
}

Information related to a child state.

Variants

ParentKeyId(ChildTrieParentKeyId)

This is the one used by default.

Implementations

impl ChildInfo[src]

pub fn new_default(storage_key: &[u8]) -> ChildInfo[src]

Instantiates child information for a default child trie of kind ChildType::ParentKeyId, using an unprefixed parent storage key.

pub fn new_default_from_vec(storage_key: Vec<u8, Global>) -> ChildInfo[src]

Same as new_default but with Vec<u8> as input.

pub fn try_update(&mut self, other: &ChildInfo) -> bool[src]

Try to update with another instance, return false if both instance are not compatible.

pub fn keyspace(&self) -> &[u8]

Notable traits for &'_ mut [u8]

impl<'_> Write for &'_ mut [u8]impl<'_> Read for &'_ [u8]
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Returns byte sequence (keyspace) that can be use by underlying db to isolate keys. This is a unique id of the child trie. The collision resistance of this value depends on the type of child info use. For ChildInfo::Default it is and need to be.

pub fn storage_key(&self) -> &[u8]

Notable traits for &'_ mut [u8]

impl<'_> Write for &'_ mut [u8]impl<'_> Read for &'_ [u8]
[src]

Returns a reference to the location in the direct parent of this trie but without the common prefix for this kind of child trie.

pub fn prefixed_storage_key(&self) -> PrefixedStorageKey[src]

Return a the full location in the direct parent of this trie.

pub fn into_prefixed_storage_key(self) -> PrefixedStorageKey[src]

Returns a the full location in the direct parent of this trie.

pub fn child_type(&self) -> ChildType[src]

Returns the type for this child info.

Trait Implementations

impl Clone for ChildInfo[src]

impl Debug for ChildInfo[src]

impl Eq for ChildInfo[src]

impl Hash for ChildInfo[src]

impl Ord for ChildInfo[src]

impl PartialEq<ChildInfo> for ChildInfo[src]

impl PartialOrd<ChildInfo> for ChildInfo[src]

impl StructuralEq for ChildInfo[src]

impl StructuralPartialEq for ChildInfo[src]

Auto Trait Implementations

impl RefUnwindSafe for ChildInfo[src]

impl Send for ChildInfo[src]

impl Sync for ChildInfo[src]

impl Unpin for ChildInfo[src]

impl UnwindSafe for ChildInfo[src]

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> CallHasher for T where
    T: Hash
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impl<T> CheckedConversion for T[src]

impl<T> DynClone for T where
    T: Clone
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impl<Q, K> Equivalent<K> for Q where
    K: Borrow<Q> + ?Sized,
    Q: Eq + ?Sized
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impl<T> From<T> for T[src]

impl<T> Instrument for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T> IsType<T> for T[src]

impl<T, Outer> IsWrappedBy<Outer> for T where
    T: From<Outer>,
    Outer: AsRef<T> + AsMut<T> + From<T>, 
[src]

pub fn from_ref(outer: &Outer) -> &T[src]

Get a reference to the inner from the outer.

pub fn from_mut(outer: &mut Outer) -> &mut T[src]

Get a mutable reference to the inner from the outer.

impl<T> MaybeDebug for T where
    T: Debug
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impl<T> MaybeDebug for T where
    T: Debug
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impl<T> MaybeHash for T where
    T: Hash
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impl<T> MaybeHash for T where
    T: Hash
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impl<T> MaybeRefUnwindSafe for T where
    T: RefUnwindSafe
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impl<T> Member for T where
    T: 'static + Clone + PartialEq<T> + Eq + Send + Sync + Debug
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impl<T> Same<T> for T[src]

type Output = T

Should always be Self

impl<T> SaturatedConversion for T[src]

impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<S, T> UncheckedInto<T> for S where
    T: UncheckedFrom<S>, 
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impl<T, S> UniqueSaturatedInto<T> for S where
    T: Bounded,
    S: TryInto<T>, 
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impl<V, T> VZip<V> for T where
    V: MultiLane<T>, 
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