reth_db::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() -> CompactU64Flags

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]) -> CompactU64Flags

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, ) -> CompactU64Flags

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<CompactU64Flags, 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]) -> (CompactU64Flags, &[u8])

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

Trait Implementations§

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impl Clone for CompactU64Flags

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fn clone(&self) -> CompactU64Flags

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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

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

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fn default() -> CompactU64Flags

Returns the “default value” for a type. Read more
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impl Copy for CompactU64Flags

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

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
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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