Enum sp_storage::StateVersion

source · [−]

pub enum StateVersion {
    V0,
    V1,
}

Expand description

Different possible state version.

V0 and V1 uses a same trie implementation, but V1 will write external value node in the trie for value with size at least TRIE_VALUE_NODE_THRESHOLD.

Variants

`V0`

Old state version, no value nodes.

`V1`

New state version can use value nodes.

Implementations

impl StateVersion

pub fn state_value_threshold(&self) -> Option<u32>

If defined, values in state of size bigger or equal to this threshold will use a separate trie node. Otherwhise, value will be inlined in branch or leaf node.

Trait Implementations

impl Clone for StateVersion

fn clone(&self) -> StateVersion

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

impl Debug for StateVersion

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

Formats the value using the given formatter. Read more

impl Default for StateVersion

fn default() -> Self

Returns the “default value” for a type. Read more

impl From<StateVersion> for u8

fn from(version: StateVersion) -> u8

Performs the conversion.

impl PartialEq<StateVersion> for StateVersion

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

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

1.0.0 · source

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

This method tests for !=.

impl TryFrom<u8> for StateVersion

type Error = ()

The type returned in the event of a conversion error.

fn try_from(val: u8) -> Result<StateVersion, ()>

Performs the conversion.

impl Copy for StateVersion

impl Eq for StateVersion

impl StructuralEq for StateVersion

impl StructuralPartialEq for StateVersion

Auto Trait Implementations

impl RefUnwindSafe for StateVersion

impl Send for StateVersion

impl Sync for StateVersion

impl Unpin for StateVersion

impl UnwindSafe for StateVersion

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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.

const: unstable · source

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.