Struct HLLArrayVisitor

pub struct HLLArrayVisitor<P: Precision + WordType<BITS>, const BITS: usize, const N: usize> { /* private fields */ }

Struct to deserialize a vector of u32

Implementations

impl<P: Precision + WordType<BITS>, const BITS: usize, const N: usize> HLLArrayVisitor<P, BITS, N>

pub fn new() -> Self

Creates a new HLLArrayVisitor

Trait Implementations

impl<P: Precision + WordType<BITS>, const BITS: usize, const N: usize> Default for HLLArrayVisitor<P, BITS, N>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, P: Precision + WordType<BITS>, const BITS: usize, const N: usize> Visitor<'de> for HLLArrayVisitor<P, BITS, N>

A visitor implementation used for deserializing an array of HLL into a fixed-size array

This visitor is used internally by the serde deserialization process for the HyperLogLog struct. It converts the deserialized sequence of HLL values into a fixed-size array.

Generic Parameters

• 'de: Lifetime specifier for the deserialization process.
• PRECISION: The precision parameter of the HyperLogLog counter.
• BITS: The number of bits used for each register in the HyperLogLog counter.

Associated Types

• Value: The type of the resulting fixed-size array.

Methods

expecting

Sets the error message for the expectation of an array of HLL.

Arguments

• formatter: A mutable reference to the formatter used to format the error message.

Returns

A core::fmt::Result indicating the success or failure of the formatting operation.

visit_seq

Processes the deserialized sequence and converts it into a fixed-size array of HLL values.

Arguments

• seq: The sequence access object used to iterate over the deserialized elements.

Returns

The resulting fixed-size array of u32 values, or an error if the deserialization failed.

type Value = [HyperLogLog<P, BITS>; N]

The value produced by this visitor.

fn expecting(&self, formatter: &mut Formatter<'_>) -> Result

Format a message stating what data this Visitor expects to receive.

fn visit_seq<A: SeqAccess<'de>>(self, seq: A) -> Result<Self::Value, A::Error>

The input contains a sequence of elements.

fn visit_bool<E>(self, v: bool) -> Result<Self::Value, E>

where E: Error,

The input contains a boolean.

fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E>

where E: Error,

The input contains an i8.

fn visit_i16<E>(self, v: i16) -> Result<Self::Value, E>

where E: Error,

The input contains an i16.

fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>

where E: Error,

The input contains an i32.

fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>

where E: Error,

The input contains an i64.

fn visit_i128<E>(self, v: i128) -> Result<Self::Value, E>

where E: Error,

The input contains a i128.

fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E>

where E: Error,

The input contains a u8.

fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E>

where E: Error,

The input contains a u16.

fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>

where E: Error,

The input contains a u32.

fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>

where E: Error,

The input contains a u64.

fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>

where E: Error,

The input contains a u128.

fn visit_f32<E>(self, v: f32) -> Result<Self::Value, E>

where E: Error,

The input contains an f32.

fn visit_f64<E>(self, v: f64) -> Result<Self::Value, E>

where E: Error,

The input contains an f64.

fn visit_char<E>(self, v: char) -> Result<Self::Value, E>

where E: Error,

The input contains a char.

fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>

where E: Error,

The input contains a string. The lifetime of the string is ephemeral and it may be destroyed after this method returns.

fn visit_borrowed_str<E>(self, v: &'de str) -> Result<Self::Value, E>

where E: Error,

The input contains a string that lives at least as long as the Deserializer.

fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>

where E: Error,

The input contains a byte array. The lifetime of the byte array is ephemeral and it may be destroyed after this method returns.

fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<Self::Value, E>

where E: Error,

The input contains a byte array that lives at least as long as the Deserializer.

fn visit_none<E>(self) -> Result<Self::Value, E>

where E: Error,

The input contains an optional that is absent.

fn visit_some<D>( self, deserializer: D, ) -> Result<Self::Value, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

The input contains an optional that is present.

fn visit_unit<E>(self) -> Result<Self::Value, E>

where E: Error,

The input contains a unit ().

fn visit_newtype_struct<D>( self, deserializer: D, ) -> Result<Self::Value, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

The input contains a newtype struct.

fn visit_map<A>( self, map: A, ) -> Result<Self::Value, <A as MapAccess<'de>>::Error>

where A: MapAccess<'de>,

The input contains a key-value map.

fn visit_enum<A>( self, data: A, ) -> Result<Self::Value, <A as EnumAccess<'de>>::Error>

where A: EnumAccess<'de>,

The input contains an enum.