Enum sp_storage::ChildType

#[repr(u32)]
pub enum ChildType {
    ParentKeyId = 1,
}

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

Variants

ParentKeyId = 1

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.

Implementations

impl ChildType

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

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]

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

Trait Implementations

impl Clone for ChildType

fn clone(&self) -> ChildType

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ChildType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ChildType

fn eq(&self, other: &ChildType) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ChildType

impl StructuralPartialEq for ChildType