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CompactU64Flags

reth_db_api::models

Struct CompactU64Flags 

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pub struct CompactU64Flags { /* private fields */ }
Expand description

Fieldset that facilitates compacting the parent type. Used bytes: 1 | Unused bits: 4

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impl CompactU64Flags

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pub const fn new() -> Self

Returns an instance with zero initialized data.

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impl CompactU64Flags

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pub const fn into_bytes(self) -> [u8; 1]

Returns the underlying bits.

§Layout

The returned byte array is layed out in the same way as described here.

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pub const fn from_bytes(bytes: [u8; 1]) -> Self

Converts the given bytes directly into the bitfield struct.

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impl CompactU64Flags

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pub fn placeholder_len(&self) -> <B4 as Specifier>::InOut

Returns the value of placeholder_len.

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pub fn placeholder_len_or_err( &self, ) -> Result<<B4 as Specifier>::InOut, InvalidBitPattern<<B4 as Specifier>::Bytes>>

Returns the value of placeholder_len.

§Errors

If the returned value contains an invalid bit pattern for placeholder_len.

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pub fn with_placeholder_len(self, new_val: <B4 as Specifier>::InOut) -> Self

Returns a copy of the bitfield with the value of placeholder_len set to the given value.

§Panics

If the given value is out of bounds for placeholder_len.

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pub fn with_placeholder_len_checked( self, new_val: <B4 as Specifier>::InOut, ) -> Result<Self, OutOfBounds>

Returns a copy of the bitfield with the value of placeholder_len set to the given value.

§Errors

If the given value is out of bounds for placeholder_len.

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pub fn set_placeholder_len(&mut self, new_val: <B4 as Specifier>::InOut)

Sets the value of placeholder_len to the given value.

§Panics

If the given value is out of bounds for placeholder_len.

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pub fn set_placeholder_len_checked( &mut self, new_val: <B4 as Specifier>::InOut, ) -> Result<(), OutOfBounds>

Sets the value of placeholder_len to the given value.

§Errors

If the given value is out of bounds for placeholder_len.

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impl CompactU64Flags

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pub fn from(buf: &[u8]) -> (Self, &[u8])

Deserializes this fieldset and returns it, alongside the original slice in an advanced position.

Trait Implementations§

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impl CheckTotalSizeMultipleOf8 for CompactU64Flags

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type Size = TotalSize<BitCount<Compact>>

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impl Clone for CompactU64Flags

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for CompactU64Flags

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impl Debug for CompactU64Flags

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

Formats the value using the given formatter. Read more
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impl Default for CompactU64Flags

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl From<CompactU64Flags> for [u8; 1]

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fn from(bytes: CompactU64Flags) -> Self

Converts to this type from the input type.
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impl From<[u8; 1]> for CompactU64Flags

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fn from(bytes: [u8; 1]) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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

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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,

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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,

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

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
Performs copy-assignment from self to dest. Read more
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> MaybeDebug for T
where T: Debug,

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

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fn type_id(&self) -> TypeId

Returns the lifetime-erased type ID of self.
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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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.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte