Struct time::format_description::parse::Unused

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struct Unused<T>(PhantomData<T>);
Available on (crate features formatting or parsing) and crate feature alloc only.
Expand description

A value that may be used in the future, but currently is not.

This struct exists so that data can semantically be passed around without actually passing it around. This way the data still exists if it is needed in the future.

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§0: PhantomData<T>

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impl<T> Freeze for Unused<T>

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impl<T> RefUnwindSafe for Unused<T>
where T: RefUnwindSafe,

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impl<T> Send for Unused<T>
where T: Send,

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impl<T> Sync for Unused<T>
where T: Sync,

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impl<T> Unpin for Unused<T>
where T: Unpin,

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impl<T> UnwindSafe for Unused<T>
where T: UnwindSafe,

Blanket Implementations§

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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> 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> SizedTypeProperties for T

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#[doc(hidden)] const IS_ZST: bool = _

🔬This is a nightly-only experimental API. (sized_type_properties)
true if this type requires no storage. false if its size is greater than zero. 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.