Enum itertools::Either
[−]
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pub enum Either<L, R> { Left(L), Right(R), }
The enum Either
with variants Left
and Right
is a general purpose
sum type with two cases.
The Either
type is symmetric and treats its variants the same way, without
preference.
(For representing success or error, use the regular Result
enum instead.)
Variants
Left(L)
A value of type L
.
Right(R)
A value of type R
.
Methods
impl<L, R> Either<L, R>
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pub fn is_left(&self) -> bool
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Return true if the value is the Left
variant.
use either::*; let values = [Left(1), Right("the right value")]; assert_eq!(values[0].is_left(), true); assert_eq!(values[1].is_left(), false);
pub fn is_right(&self) -> bool
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Return true if the value is the Right
variant.
use either::*; let values = [Left(1), Right("the right value")]; assert_eq!(values[0].is_right(), false); assert_eq!(values[1].is_right(), true);
pub fn left(self) -> Option<L>
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Convert the left side of Either<L, R>
to an Option<L>
.
use either::*; let left: Either<_, ()> = Left("some value"); assert_eq!(left.left(), Some("some value")); let right: Either<(), _> = Right(321); assert_eq!(right.left(), None);
pub fn right(self) -> Option<R>
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Convert the right side of Either<L, R>
to an Option<R>
.
use either::*; let left: Either<_, ()> = Left("some value"); assert_eq!(left.right(), None); let right: Either<(), _> = Right(321); assert_eq!(right.right(), Some(321));
ⓘImportant traits for Either<L, R>pub fn as_ref(&self) -> Either<&L, &R>
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Convert &Either<L, R>
to Either<&L, &R>
.
use either::*; let left: Either<_, ()> = Left("some value"); assert_eq!(left.as_ref(), Left(&"some value")); let right: Either<(), _> = Right("some value"); assert_eq!(right.as_ref(), Right(&"some value"));
ⓘImportant traits for Either<L, R>pub fn as_mut(&mut self) -> Either<&mut L, &mut R>
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Convert &mut Either<L, R>
to Either<&mut L, &mut R>
.
use either::*; fn mutate_left(value: &mut Either<u32, u32>) { if let Some(l) = value.as_mut().left() { *l = 999; } } let mut left = Left(123); let mut right = Right(123); mutate_left(&mut left); mutate_left(&mut right); assert_eq!(left, Left(999)); assert_eq!(right, Right(123));
ⓘImportant traits for Either<L, R>pub fn flip(self) -> Either<R, L>
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Convert Either<L, R>
to Either<R, L>
.
use either::*; let left: Either<_, ()> = Left(123); assert_eq!(left.flip(), Right(123)); let right: Either<(), _> = Right("some value"); assert_eq!(right.flip(), Left("some value"));
ⓘImportant traits for Either<L, R>pub fn map_left<F, M>(self, f: F) -> Either<M, R> where
F: FnOnce(L) -> M,
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F: FnOnce(L) -> M,
Apply the function f
on the value in the Left
variant if it is present rewrapping the
result in Left
.
use either::*; let left: Either<_, u32> = Left(123); assert_eq!(left.map_left(|x| x * 2), Left(246)); let right: Either<u32, _> = Right(123); assert_eq!(right.map_left(|x| x * 2), Right(123));
ⓘImportant traits for Either<L, R>pub fn map_right<F, S>(self, f: F) -> Either<L, S> where
F: FnOnce(R) -> S,
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F: FnOnce(R) -> S,
Apply the function f
on the value in the Right
variant if it is present rewrapping the
result in Right
.
use either::*; let left: Either<_, u32> = Left(123); assert_eq!(left.map_right(|x| x * 2), Left(123)); let right: Either<u32, _> = Right(123); assert_eq!(right.map_right(|x| x * 2), Right(246));
pub fn either<F, G, T>(self, f: F, g: G) -> T where
F: FnOnce(L) -> T,
G: FnOnce(R) -> T,
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F: FnOnce(L) -> T,
G: FnOnce(R) -> T,
Apply one of two functions depending on contents, unifying their result. If the value is
Left(L)
then the first function f
is applied; if it is Right(R)
then the second
function g
is applied.
use either::*; fn square(n: u32) -> i32 { (n * n) as i32 } fn negate(n: i32) -> i32 { -n } let left: Either<u32, i32> = Left(4); assert_eq!(left.either(square, negate), 16); let right: Either<u32, i32> = Right(-4); assert_eq!(right.either(square, negate), 4);
pub fn either_with<Ctx, F, G, T>(self, ctx: Ctx, f: F, g: G) -> T where
F: FnOnce(Ctx, L) -> T,
G: FnOnce(Ctx, R) -> T,
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F: FnOnce(Ctx, L) -> T,
G: FnOnce(Ctx, R) -> T,
Like either
, but provide some context to whichever of the
functions ends up being called.
// In this example, the context is a mutable reference use either::*; let mut result = Vec::new(); let values = vec![Left(2), Right(2.7)]; for value in values { value.either_with(&mut result, |ctx, integer| ctx.push(integer), |ctx, real| ctx.push(f64::round(real) as i32)); } assert_eq!(result, vec![2, 3]);
ⓘImportant traits for Either<L, R>pub fn left_and_then<F, S>(self, f: F) -> Either<S, R> where
F: FnOnce(L) -> Either<S, R>,
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F: FnOnce(L) -> Either<S, R>,
Apply the function f
on the value in the Left
variant if it is present.
use either::*; let left: Either<_, u32> = Left(123); assert_eq!(left.left_and_then::<_,()>(|x| Right(x * 2)), Right(246)); let right: Either<u32, _> = Right(123); assert_eq!(right.left_and_then(|x| Right::<(), _>(x * 2)), Right(123));
ⓘImportant traits for Either<L, R>pub fn right_and_then<F, S>(self, f: F) -> Either<L, S> where
F: FnOnce(R) -> Either<L, S>,
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F: FnOnce(R) -> Either<L, S>,
Apply the function f
on the value in the Right
variant if it is present.
use either::*; let left: Either<_, u32> = Left(123); assert_eq!(left.right_and_then(|x| Right(x * 2)), Left(123)); let right: Either<u32, _> = Right(123); assert_eq!(right.right_and_then(|x| Right(x * 2)), Right(246));
ⓘImportant traits for Either<L, R>pub fn into_iter(
self
) -> Either<<L as IntoIterator>::IntoIter, <R as IntoIterator>::IntoIter> where
L: IntoIterator,
R: IntoIterator<Item = <L as IntoIterator>::Item>,
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self
) -> Either<<L as IntoIterator>::IntoIter, <R as IntoIterator>::IntoIter> where
L: IntoIterator,
R: IntoIterator<Item = <L as IntoIterator>::Item>,
Convert the inner value to an iterator.
use either::*; let left: Either<_, Vec<u32>> = Left(vec![1, 2, 3, 4, 5]); let mut right: Either<Vec<u32>, _> = Right(vec![]); right.extend(left.into_iter()); assert_eq!(right, Right(vec![1, 2, 3, 4, 5]));
impl<T, L, R> Either<(T, L), (T, R)>
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pub fn factor_first(self) -> (T, Either<L, R>)
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Factor out a homogeneous type from an either of pairs.
Here, the homogeneous type is the first element of the pairs.
use either::*; let left: Either<_, (u32, String)> = Left((123, vec![0])); assert_eq!(left.factor_first().0, 123); let right: Either<(u32, Vec<u8>), _> = Right((123, String::new())); assert_eq!(right.factor_first().0, 123);
impl<T, L, R> Either<(L, T), (R, T)>
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pub fn factor_second(self) -> (Either<L, R>, T)
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Factor out a homogeneous type from an either of pairs.
Here, the homogeneous type is the second element of the pairs.
use either::*; let left: Either<_, (String, u32)> = Left((vec![0], 123)); assert_eq!(left.factor_second().1, 123); let right: Either<(Vec<u8>, u32), _> = Right((String::new(), 123)); assert_eq!(right.factor_second().1, 123);
impl<T> Either<T, T>
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pub fn into_inner(self) -> T
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Extract the value of an either over two equivalent types.
use either::*; let left: Either<_, u32> = Left(123); assert_eq!(left.into_inner(), 123); let right: Either<u32, _> = Right(123); assert_eq!(right.into_inner(), 123);
Trait Implementations
impl<L, R> ExactSizeIterator for Either<L, R> where
L: ExactSizeIterator,
R: ExactSizeIterator<Item = <L as Iterator>::Item>,
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L: ExactSizeIterator,
R: ExactSizeIterator<Item = <L as Iterator>::Item>,
fn len(&self) -> usize
1.0.0[src]
Returns the exact number of times the iterator will iterate. Read more
fn is_empty(&self) -> bool
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exact_size_is_empty
)Returns whether the iterator is empty. Read more
impl<L, R> Iterator for Either<L, R> where
L: Iterator,
R: Iterator<Item = <L as Iterator>::Item>,
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L: Iterator,
R: Iterator<Item = <L as Iterator>::Item>,
Either<L, R>
is an iterator if both L
and R
are iterators.
type Item = <L as Iterator>::Item
The type of the elements being iterated over.
fn next(&mut self) -> Option<<Either<L, R> as Iterator>::Item>
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Advances the iterator and returns the next value. Read more
fn size_hint(&self) -> (usize, Option<usize>)
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Returns the bounds on the remaining length of the iterator. Read more
fn fold<Acc, G>(self, init: Acc, f: G) -> Acc where
G: FnMut(Acc, <Either<L, R> as Iterator>::Item) -> Acc,
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G: FnMut(Acc, <Either<L, R> as Iterator>::Item) -> Acc,
An iterator method that applies a function, producing a single, final value. Read more
fn count(self) -> usize
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Consumes the iterator, counting the number of iterations and returning it. Read more
fn last(self) -> Option<<Either<L, R> as Iterator>::Item>
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Consumes the iterator, returning the last element. Read more
fn nth(&mut self, n: usize) -> Option<<Either<L, R> as Iterator>::Item>
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Returns the n
th element of the iterator. Read more
fn collect<B>(self) -> B where
B: FromIterator<<Either<L, R> as Iterator>::Item>,
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B: FromIterator<<Either<L, R> as Iterator>::Item>,
Transforms an iterator into a collection. Read more
fn all<F>(&mut self, f: F) -> bool where
F: FnMut(<Either<L, R> as Iterator>::Item) -> bool,
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F: FnMut(<Either<L, R> as Iterator>::Item) -> bool,
Tests if every element of the iterator matches a predicate. Read more
ⓘImportant traits for StepBy<I>fn step_by(self, step: usize) -> StepBy<Self>
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🔬 This is a nightly-only experimental API. (iterator_step_by
)
unstable replacement of Range::step_by
Creates an iterator starting at the same point, but stepping by the given amount at each iteration. Read more
ⓘImportant traits for Chain<A, B>fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator<Item = Self::Item>,
1.0.0[src]
U: IntoIterator<Item = Self::Item>,
Takes two iterators and creates a new iterator over both in sequence. Read more
ⓘImportant traits for Zip<A, B>fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator,
1.0.0[src]
U: IntoIterator,
'Zips up' two iterators into a single iterator of pairs. Read more
ⓘImportant traits for Map<I, F>fn map<B, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> B,
1.0.0[src]
F: FnMut(Self::Item) -> B,
Takes a closure and creates an iterator which calls that closure on each element. Read more
fn for_each<F>(self, f: F) where
F: FnMut(Self::Item),
1.21.0[src]
F: FnMut(Self::Item),
Calls a closure on each element of an iterator. Read more
ⓘImportant traits for Filter<I, P>fn filter<P>(self, predicate: P) -> Filter<Self, P> where
P: FnMut(&Self::Item) -> bool,
1.0.0[src]
P: FnMut(&Self::Item) -> bool,
Creates an iterator which uses a closure to determine if an element should be yielded. Read more
ⓘImportant traits for FilterMap<I, F>fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where
F: FnMut(Self::Item) -> Option<B>,
1.0.0[src]
F: FnMut(Self::Item) -> Option<B>,
Creates an iterator that both filters and maps. Read more
ⓘImportant traits for Enumerate<I>fn enumerate(self) -> Enumerate<Self>
1.0.0[src]
Creates an iterator which gives the current iteration count as well as the next value. Read more
ⓘImportant traits for Peekable<I>fn peekable(self) -> Peekable<Self>
1.0.0[src]
Creates an iterator which can use peek
to look at the next element of the iterator without consuming it. Read more
ⓘImportant traits for SkipWhile<I, P>fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,
1.0.0[src]
P: FnMut(&Self::Item) -> bool,
Creates an iterator that [skip
]s elements based on a predicate. Read more
ⓘImportant traits for TakeWhile<I, P>fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,
1.0.0[src]
P: FnMut(&Self::Item) -> bool,
Creates an iterator that yields elements based on a predicate. Read more
ⓘImportant traits for Skip<I>fn skip(self, n: usize) -> Skip<Self>
1.0.0[src]
Creates an iterator that skips the first n
elements. Read more
ⓘImportant traits for Take<I>fn take(self, n: usize) -> Take<Self>
1.0.0[src]
Creates an iterator that yields its first n
elements. Read more
ⓘImportant traits for Scan<I, St, F>fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where
F: FnMut(&mut St, Self::Item) -> Option<B>,
1.0.0[src]
F: FnMut(&mut St, Self::Item) -> Option<B>,
An iterator adaptor similar to [fold
] that holds internal state and produces a new iterator. Read more
ⓘImportant traits for FlatMap<I, U, F>fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
F: FnMut(Self::Item) -> U,
U: IntoIterator,
1.0.0[src]
F: FnMut(Self::Item) -> U,
U: IntoIterator,
Creates an iterator that works like map, but flattens nested structure. Read more
ⓘImportant traits for Fuse<I>fn fuse(self) -> Fuse<Self>
1.0.0[src]
Creates an iterator which ends after the first [None
]. Read more
ⓘImportant traits for Inspect<I, F>fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item),
1.0.0[src]
F: FnMut(&Self::Item),
Do something with each element of an iterator, passing the value on. Read more
ⓘImportant traits for &'a mut Rfn by_ref(&mut self) -> &mut Self
1.0.0[src]
Borrows an iterator, rather than consuming it. Read more
fn partition<B, F>(self, f: F) -> (B, B) where
B: Default + Extend<Self::Item>,
F: FnMut(&Self::Item) -> bool,
1.0.0[src]
B: Default + Extend<Self::Item>,
F: FnMut(&Self::Item) -> bool,
Consumes an iterator, creating two collections from it. Read more
fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R where
F: FnMut(B, Self::Item) -> R,
R: Try<Ok = B>,
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F: FnMut(B, Self::Item) -> R,
R: Try<Ok = B>,
iterator_try_fold
)An iterator method that applies a function as long as it returns successfully, producing a single, final value. Read more
fn any<F>(&mut self, f: F) -> bool where
F: FnMut(Self::Item) -> bool,
1.0.0[src]
F: FnMut(Self::Item) -> bool,
Tests if any element of the iterator matches a predicate. Read more
fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where
P: FnMut(&Self::Item) -> bool,
1.0.0[src]
P: FnMut(&Self::Item) -> bool,
Searches for an element of an iterator that satisfies a predicate. Read more
fn position<P>(&mut self, predicate: P) -> Option<usize> where
P: FnMut(Self::Item) -> bool,
1.0.0[src]
P: FnMut(Self::Item) -> bool,
Searches for an element in an iterator, returning its index. Read more
fn rposition<P>(&mut self, predicate: P) -> Option<usize> where
P: FnMut(Self::Item) -> bool,
Self: ExactSizeIterator + DoubleEndedIterator,
1.0.0[src]
P: FnMut(Self::Item) -> bool,
Self: ExactSizeIterator + DoubleEndedIterator,
Searches for an element in an iterator from the right, returning its index. Read more
fn max(self) -> Option<Self::Item> where
Self::Item: Ord,
1.0.0[src]
Self::Item: Ord,
Returns the maximum element of an iterator. Read more
fn min(self) -> Option<Self::Item> where
Self::Item: Ord,
1.0.0[src]
Self::Item: Ord,
Returns the minimum element of an iterator. Read more
fn max_by_key<B, F>(self, f: F) -> Option<Self::Item> where
B: Ord,
F: FnMut(&Self::Item) -> B,
1.6.0[src]
B: Ord,
F: FnMut(&Self::Item) -> B,
Returns the element that gives the maximum value from the specified function. Read more
fn max_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
1.15.0[src]
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
Returns the element that gives the maximum value with respect to the specified comparison function. Read more
fn min_by_key<B, F>(self, f: F) -> Option<Self::Item> where
B: Ord,
F: FnMut(&Self::Item) -> B,
1.6.0[src]
B: Ord,
F: FnMut(&Self::Item) -> B,
Returns the element that gives the minimum value from the specified function. Read more
fn min_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
1.15.0[src]
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
Returns the element that gives the minimum value with respect to the specified comparison function. Read more
ⓘImportant traits for Rev<I>fn rev(self) -> Rev<Self> where
Self: DoubleEndedIterator,
1.0.0[src]
Self: DoubleEndedIterator,
Reverses an iterator's direction. Read more
fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Iterator<Item = (A, B)>,
1.0.0[src]
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Iterator<Item = (A, B)>,
Converts an iterator of pairs into a pair of containers. Read more
ⓘImportant traits for Cloned<I>fn cloned<'a, T>(self) -> Cloned<Self> where
Self: Iterator<Item = &'a T>,
T: 'a + Clone,
1.0.0[src]
Self: Iterator<Item = &'a T>,
T: 'a + Clone,
Creates an iterator which [clone
]s all of its elements. Read more
ⓘImportant traits for Cycle<I>fn cycle(self) -> Cycle<Self> where
Self: Clone,
1.0.0[src]
Self: Clone,
Repeats an iterator endlessly. Read more
fn sum<S>(self) -> S where
S: Sum<Self::Item>,
1.11.0[src]
S: Sum<Self::Item>,
Sums the elements of an iterator. Read more
fn product<P>(self) -> P where
P: Product<Self::Item>,
1.11.0[src]
P: Product<Self::Item>,
Iterates over the entire iterator, multiplying all the elements Read more
fn cmp<I>(self, other: I) -> Ordering where
I: IntoIterator<Item = Self::Item>,
Self::Item: Ord,
1.5.0[src]
I: IntoIterator<Item = Self::Item>,
Self::Item: Ord,
Lexicographically compares the elements of this Iterator
with those of another. Read more
fn partial_cmp<I>(self, other: I) -> Option<Ordering> where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0[src]
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Lexicographically compares the elements of this Iterator
with those of another. Read more
fn eq<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
1.5.0[src]
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are equal to those of another. Read more
fn ne<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
1.5.0[src]
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are unequal to those of another. Read more
fn lt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0[src]
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically less than those of another. Read more
fn le<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0[src]
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically less or equal to those of another. Read more
fn gt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0[src]
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically greater than those of another. Read more
fn ge<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0[src]
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically greater than or equal to those of another. Read more
impl<L, R> Ord for Either<L, R> where
L: Ord,
R: Ord,
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L: Ord,
R: Ord,
fn cmp(&self, __arg_0: &Either<L, R>) -> Ordering
[src]
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
impl<L, R> DoubleEndedIterator for Either<L, R> where
L: DoubleEndedIterator,
R: DoubleEndedIterator<Item = <L as Iterator>::Item>,
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L: DoubleEndedIterator,
R: DoubleEndedIterator<Item = <L as Iterator>::Item>,
fn next_back(&mut self) -> Option<<Either<L, R> as Iterator>::Item>
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Removes and returns an element from the end of the iterator. Read more
fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R where
F: FnMut(B, Self::Item) -> R,
R: Try<Ok = B>,
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F: FnMut(B, Self::Item) -> R,
R: Try<Ok = B>,
iterator_try_fold
)This is the reverse version of [try_fold()
]: it takes elements starting from the back of the iterator. Read more
fn rfold<B, F>(self, accum: B, f: F) -> B where
F: FnMut(B, Self::Item) -> B,
[src]
F: FnMut(B, Self::Item) -> B,
iter_rfold
)An iterator method that reduces the iterator's elements to a single, final value, starting from the back. Read more
fn rfind<P>(&mut self, predicate: P) -> Option<Self::Item> where
P: FnMut(&Self::Item) -> bool,
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P: FnMut(&Self::Item) -> bool,
iter_rfind
)Searches for an element of an iterator from the right that satisfies a predicate. Read more
impl<L, R> Into<Result<R, L>> for Either<L, R>
[src]
Convert from Either
to Result
with Right => Ok
and Left => Err
.
impl<L, R> Copy for Either<L, R> where
L: Copy,
R: Copy,
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L: Copy,
R: Copy,
impl<L, R> Clone for Either<L, R> where
L: Clone,
R: Clone,
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L: Clone,
R: Clone,
ⓘImportant traits for Either<L, R>fn clone(&self) -> Either<L, R>
[src]
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl<L, R> DerefMut for Either<L, R> where
L: DerefMut,
R: DerefMut<Target = <L as Deref>::Target>,
[src]
L: DerefMut,
R: DerefMut<Target = <L as Deref>::Target>,
ⓘImportant traits for Either<L, R>fn deref_mut(&mut self) -> &mut <Either<L, R> as Deref>::Target
[src]
Mutably dereferences the value.
impl<L, R> From<Result<R, L>> for Either<L, R>
[src]
Convert from Result
to Either
with Ok => Right
and Err => Left
.
ⓘImportant traits for Either<L, R>fn from(r: Result<R, L>) -> Either<L, R>
[src]
Performs the conversion.
impl<L, R> Debug for Either<L, R> where
L: Debug,
R: Debug,
[src]
L: Debug,
R: Debug,
fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>
[src]
Formats the value using the given formatter. Read more
impl<L, R> Deref for Either<L, R> where
L: Deref,
R: Deref<Target = <L as Deref>::Target>,
[src]
L: Deref,
R: Deref<Target = <L as Deref>::Target>,
type Target = <L as Deref>::Target
The resulting type after dereferencing.
ⓘImportant traits for Either<L, R>fn deref(&self) -> &<Either<L, R> as Deref>::Target
[src]
Dereferences the value.
impl<L, R> PartialOrd<Either<L, R>> for Either<L, R> where
L: PartialOrd<L>,
R: PartialOrd<R>,
[src]
L: PartialOrd<L>,
R: PartialOrd<R>,
fn partial_cmp(&self, __arg_0: &Either<L, R>) -> Option<Ordering>
[src]
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &Either<L, R>) -> bool
[src]
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &Either<L, R>) -> bool
[src]
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &Either<L, R>) -> bool
[src]
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &Either<L, R>) -> bool
[src]
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl<L, R, Target> AsRef<Target> for Either<L, R> where
L: AsRef<Target>,
R: AsRef<Target>,
[src]
L: AsRef<Target>,
R: AsRef<Target>,
impl<L, R, A> Extend<A> for Either<L, R> where
L: Extend<A>,
R: Extend<A>,
[src]
L: Extend<A>,
R: Extend<A>,
fn extend<T>(&mut self, iter: T) where
T: IntoIterator<Item = A>,
[src]
T: IntoIterator<Item = A>,
Extends a collection with the contents of an iterator. Read more
impl<L, R, Target> AsMut<Target> for Either<L, R> where
L: AsMut<Target>,
R: AsMut<Target>,
[src]
L: AsMut<Target>,
R: AsMut<Target>,
impl<L, R> Hash for Either<L, R> where
L: Hash,
R: Hash,
[src]
L: Hash,
R: Hash,
fn hash<__HLR>(&self, __arg_0: &mut __HLR) where
__HLR: Hasher,
[src]
__HLR: Hasher,
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<L, R> PartialEq<Either<L, R>> for Either<L, R> where
L: PartialEq<L>,
R: PartialEq<R>,
[src]
L: PartialEq<L>,
R: PartialEq<R>,
fn eq(&self, __arg_0: &Either<L, R>) -> bool
[src]
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Either<L, R>) -> bool
[src]
This method tests for !=
.
impl<L, R> Eq for Either<L, R> where
L: Eq,
R: Eq,
[src]
L: Eq,
R: Eq,
impl<L, R> Display for Either<L, R> where
L: Display,
R: Display,
[src]
L: Display,
R: Display,