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ValueOrLambda

Enum ValueOrLambda 

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pub enum ValueOrLambda<V, L> {
    Value(V),
    Lambda(L),
}
Expand description

An argument to a higher order function

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Value(V)

A value with associated data

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Lambda(L)

A lambda with associated data

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impl<V: Clone, L: Clone> Clone for ValueOrLambda<V, L>

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fn clone(&self) -> ValueOrLambda<V, L>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<V: Debug, L: Debug> Debug for ValueOrLambda<V, L>

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

Formats the value using the given formatter. Read more
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impl<V: Eq, L: Eq> Eq for ValueOrLambda<V, L>

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impl<V: Hash, L: Hash> Hash for ValueOrLambda<V, L>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<V: PartialEq, L: PartialEq> PartialEq for ValueOrLambda<V, L>

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fn eq(&self, other: &ValueOrLambda<V, L>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<V: PartialOrd, L: PartialOrd> PartialOrd for ValueOrLambda<V, L>

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fn partial_cmp(&self, other: &ValueOrLambda<V, L>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 (const: unstable) · Source§

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

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 (const: unstable) · Source§

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

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 (const: unstable) · Source§

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

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 (const: unstable) · Source§

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

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<V, L> StructuralPartialEq for ValueOrLambda<V, L>

Auto Trait Implementations§

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impl<V, L> Freeze for ValueOrLambda<V, L>
where V: Freeze, L: Freeze,

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impl<V, L> RefUnwindSafe for ValueOrLambda<V, L>

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impl<V, L> Send for ValueOrLambda<V, L>
where V: Send, L: Send,

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impl<V, L> Sync for ValueOrLambda<V, L>
where V: Sync, L: Sync,

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impl<V, L> Unpin for ValueOrLambda<V, L>
where V: Unpin, L: Unpin,

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impl<V, L> UnsafeUnpin for ValueOrLambda<V, L>
where V: UnsafeUnpin, L: UnsafeUnpin,

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impl<V, L> UnwindSafe for ValueOrLambda<V, L>
where V: UnwindSafe, L: UnwindSafe,

Blanket Implementations§

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> DynEq for T
where T: Eq + Any,

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fn dyn_eq(&self, other: &(dyn Any + 'static)) -> bool

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impl<T> DynHash for T
where T: Hash + Any,

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fn dyn_hash(&self, state: &mut dyn Hasher)

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.