Enum sp_storage::ChildType

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

Expand description

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

Variants

`ParentKeyId`

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

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impl ChildType

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

Try to get a child type from its u32 representation.

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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.

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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

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impl Clone for ChildType

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fn clone(&self) -> ChildType

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

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impl Debug for ChildType

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

Formats the value using the given formatter. Read more

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impl PartialEq<ChildType> for ChildType

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fn eq(&self, other: &ChildType) -> 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 !=.

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impl Copy for ChildType

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impl StructuralPartialEq for ChildType

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

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

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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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

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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

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into 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.

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

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

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

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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

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impl<T, U> TryFrom 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>::Error>

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Enum sp_storage::ChildType

Variants

ParentKeyId

Implementations

impl ChildType

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

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

pub fn parent_prefix(&self) -> &'static [u8]ⓘNotable traits for &'_ [u8]impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]

Trait Implementations

impl Clone for ChildType

fn clone(&self) -> ChildType

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

impl Debug for ChildType

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

impl PartialEq<ChildType> for ChildType

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

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

impl Copy for ChildType

impl StructuralPartialEq for ChildType

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,

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

type Owned = T

pub fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

`ParentKeyId`

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

pub fn parent_prefix(&self) -> &'static [u8 ]ⓘNotable traits for &'_ [u8 ]`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`

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

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

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

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