Enum FrontBack 

pub enum FrontBack<A, B> {
    Front(A),
    Back(B),
}

This is the TokenGroup for BookEnds. We need to differentiate between features at the front of a word and features at the back of a word. Otherwise suffixes and prefixes would be identical.

Variants

Front(A)

the TokenGroup from running A on the front of the input

Back(B)

the TokenGroup from running B on the Back of the input

Trait Implementations

impl<A: Clone, B: Clone> Clone for FrontBack<A, B>

fn clone(&self) -> FrontBack<A, B>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<A: Debug, B: Debug> Debug for FrontBack<A, B>

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

Formats the value using the given formatter.

impl<A, B, Ax, Bx> FeatureFrom<FrontBack<A, B>> for FrontBack<Ax, Bx>

where Ax: FeatureFrom<A>, Bx: FeatureFrom<B>,

fn from(x: FrontBack<A, B>) -> Self

impl<A, B, C> FeatureFrom<FrontBack<A, B>> for Merged<C>

where C: FeatureFrom<A> + FeatureFrom<B>,

fn from(x: FrontBack<A, B>) -> Self

impl<A, B, Ax, Bx> FeatureFrom<FrontBack<A, B>> for Result<Ax, Bx>

where Ax: FeatureFrom<A>, Bx: FeatureFrom<B>,

fn from(x: FrontBack<A, B>) -> Self

impl<A: Hash, B: Hash> Hash for FrontBack<A, B>

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: Ord, B: Ord> Ord for FrontBack<A, B>

fn cmp(&self, other: &FrontBack<A, B>) -> 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<A: PartialEq, B: PartialEq> PartialEq for FrontBack<A, B>

fn eq(&self, other: &FrontBack<A, B>) -> 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<A: PartialOrd, B: PartialOrd> PartialOrd for FrontBack<A, B>

fn partial_cmp(&self, other: &FrontBack<A, B>) -> 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<A: Copy, B: Copy> Copy for FrontBack<A, B>

impl<A: Eq, B: Eq> Eq for FrontBack<A, B>

impl<A, B> StructuralPartialEq for FrontBack<A, B>