Struct Empty 

pub struct Empty;

The featurizer returned by empty()

Trait Implementations

impl Clone for Empty

fn clone(&self) -> Empty

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Empty

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

Formats the value using the given formatter.

impl<Origin> Ftzr<Origin> for Empty

where Self: IterFtzr<Origin>,

type TokenGroup = <Empty as IterFtzr<Origin>>::TokenGroup

Type of tokens visited by the featurizer. Usually something like &'a [T] (for one dimensional data)

fn push_tokens<Push>(&self, origin: Origin, push: &mut Push)

where Push: FnMut(Self::TokenGroup),

The main method to implement for the Ftzr<InputData> trait. Each group of tokens is visited by the FnMut(Self::TokenGroup) function.

fn push_tokens_from<Push, T>(&self, input: InputData, push: &mut Push)

where Push: FnMut(T), T: FeatureFrom<Self::TokenGroup>,

Identical to Ftzr::push_tokens, except with implicit coercion via FeatureFrom<Self::TokenGroup>

fn featurize<Feature, A>(&self, input: InputData) -> A

where Feature: FeatureFrom<Self::TokenGroup>, A: Accumulates<Feature>,

The most versatile tool in the entire crate.

fn featurize_x2<A1, T1, A2, T2>(&self, input: InputData) -> (A1, A2)

where Self::TokenGroup: Clone, A1: Accumulates<T1>, A2: Accumulates<T2>, T1: FeatureFrom<Self::TokenGroup>, T2: FeatureFrom<Self::TokenGroup>,

Identical to Ftzr::featurize, but produces two outputs while still only featurizing the input once. Pretty cool!

fn as_fn<X: FeatureFrom<Self::TokenGroup>>( self, ) -> Arc<dyn Fn(InputData) -> Vec<X> + Send + Sync>

where Self: Sized + Send + Sync + 'static,

impl Hash for Empty

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a, T> IterFtzr<&'a [T]> for Empty

type TokenGroup = EmptyAtom

Type of tokens produced by the featurizer. Usually something like &'a [T] (for one dimensional data)

type Iter = IntoIter<<Empty as IterFtzr<&'a [T]>>::TokenGroup>

The associated iterator. For example: NGramIter, MultiFtzrIter, etc

fn iterate_features(&self, origin: &'a [T]) -> Self::Iter

Similar to into_iter, but for featurizers.

impl<'a, T, const N: usize> IterFtzr<&'a [T; N]> for Empty

where Self: IterFtzr<&'a [T]>,

type TokenGroup = <Empty as IterFtzr<&'a [T]>>::TokenGroup

Type of tokens produced by the featurizer. Usually something like &'a [T] (for one dimensional data)

type Iter = <Empty as IterFtzr<&'a [T]>>::Iter

The associated iterator. For example: NGramIter, MultiFtzrIter, etc

fn iterate_features(&self, origin: &'a [T; N]) -> Self::Iter

Similar to into_iter, but for featurizers.

impl<'a> IterFtzr<&'a String> for Empty

where Self: IterFtzr<&'a [u8]>,

type TokenGroup = <Empty as IterFtzr<&'a [u8]>>::TokenGroup

Type of tokens produced by the featurizer. Usually something like &'a [T] (for one dimensional data)

type Iter = <Empty as IterFtzr<&'a [u8]>>::Iter

The associated iterator. For example: NGramIter, MultiFtzrIter, etc

fn iterate_features(&self, origin: &'a String) -> Self::Iter

Similar to into_iter, but for featurizers.

impl<'a, T> IterFtzr<&'a Vec<T>> for Empty

where Self: IterFtzr<&'a [T]>,

type TokenGroup = <Empty as IterFtzr<&'a [T]>>::TokenGroup

Type of tokens produced by the featurizer. Usually something like &'a [T] (for one dimensional data)

type Iter = <Empty as IterFtzr<&'a [T]>>::Iter

The associated iterator. For example: NGramIter, MultiFtzrIter, etc

fn iterate_features(&self, origin: &'a Vec<T>) -> Self::Iter

Similar to into_iter, but for featurizers.

impl<'a> IterFtzr<&'a str> for Empty

where Self: IterFtzr<&'a [u8]>,

type TokenGroup = <Empty as IterFtzr<&'a [u8]>>::TokenGroup

Type of tokens produced by the featurizer. Usually something like &'a [T] (for one dimensional data)

type Iter = <Empty as IterFtzr<&'a [u8]>>::Iter

The associated iterator. For example: NGramIter, MultiFtzrIter, etc

fn iterate_features(&self, origin: &'a str) -> Self::Iter

Similar to into_iter, but for featurizers.

impl LinearFixed for Empty

fn chunk_size(&self) -> usize

must be equal to the ‘n’ of an n-gram, or the total stretch of a GapGram (including both groups and the space between).

impl Ord for Empty

fn cmp(&self, other: &Empty) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Empty

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Empty

fn partial_cmp(&self, other: &Empty) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Empty

impl Eq for Empty

impl StructuralPartialEq for Empty