Enum sp_storage::ChildType[][src]

#[repr(u32)]pub enum ChildType {

Type of child. It does not strictly define different child type, it can also be related to technical consideration or api variant.



If runtime module ensures that the child key is a unique id that will only be used once, its parent key is used as a child trie unique id.


impl ChildType[src]

pub fn new(repr: u32) -> Option<ChildType>[src]

Try to get a child type from its u32 representation.

pub fn from_prefixed_key<'a>(
    storage_key: &'a PrefixedStorageKey
) -> Option<(Self, &'a [u8])>

Transform a prefixed key into a tuple of the child type and the unprefixed representation of the key.

pub fn parent_prefix(&self) -> &'static [u8]

Notable traits for &'_ [u8]

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

Returns the location reserved for this child trie in their parent trie if there is one.

Trait Implementations

impl Clone for ChildType[src]

impl Copy for ChildType[src]

impl Debug for ChildType[src]

impl PartialEq<ChildType> for ChildType[src]

impl StructuralPartialEq for ChildType[src]

Auto Trait Implementations

impl RefUnwindSafe for ChildType

impl Send for ChildType

impl Sync for ChildType

impl Unpin for ChildType

impl UnwindSafe for ChildType

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized

impl<T> Borrow<T> for T where
    T: ?Sized

impl<T> BorrowMut<T> for T where
    T: ?Sized

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 

impl<T> ToOwned for T where
    T: Clone

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.