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Identity

oxilean_std::monad::types

Struct Identity 

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pub struct Identity<A> {
    pub value: A,
}
Expand description

A simple identity monad: wraps a value with no effects.

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§value: A

The wrapped value.

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impl<A> Identity<A>

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pub fn pure(a: A) -> Self

Wrap a value.

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pub fn bind<B>(self, f: impl FnOnce(A) -> Identity<B>) -> Identity<B>

Bind: apply a function to the contained value.

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pub fn map<B>(self, f: impl FnOnce(A) -> B) -> Identity<B>

Map: apply a function to the contained value.

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pub fn run(self) -> A

Extract the value.

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impl<A: Clone> Clone for Identity<A>

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fn clone(&self) -> Identity<A>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<A: Debug> Debug for Identity<A>

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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<A: PartialEq> PartialEq for Identity<A>

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fn eq(&self, other: &Identity<A>) -> bool

Tests for self and other values to be equal, and is used by ==.
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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<A: Eq> Eq for Identity<A>

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impl<A> StructuralPartialEq for Identity<A>

Auto Trait Implementations§

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impl<A> Freeze for Identity<A>
where A: Freeze,

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impl<A> RefUnwindSafe for Identity<A>
where A: RefUnwindSafe,

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impl<A> Send for Identity<A>
where A: Send,

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impl<A> Sync for Identity<A>
where A: Sync,

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impl<A> Unpin for Identity<A>
where A: Unpin,

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impl<A> UnsafeUnpin for Identity<A>
where A: UnsafeUnpin,

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impl<A> UnwindSafe for Identity<A>
where A: UnwindSafe,

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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> 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> Setoid for T
where T: PartialEq,

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fn equiv(&self, other: &T) -> bool

The equivalence relation.
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fn refl(&self) -> bool

Reflexivity of the equivalence.
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fn symm(&self, other: &Self) -> bool

Symmetry: if self ~ other then other ~ self.
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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.