pub enum NumericReference<'a> {
    IntRef(&'a i64),
    FloatRef(&'a f64),
}
Expand description

A reference to a number, either integral or floating-point. Goofy, yes.

The same basic rules apply to enumerated types as to struct types. If you don’t include the lifetime on the type itself, the compiler won’t let it pass when you try to use the enum.

As in the struct example, the lifetimes of both items match the lifetime declared on the type itself.

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IntRef(&'a i64)

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FloatRef(&'a f64)

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impl<'a> RefUnwindSafe for NumericReference<'a>

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impl<'a> Send for NumericReference<'a>

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impl<'a> Sync for NumericReference<'a>

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impl<'a> Unpin for NumericReference<'a>

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impl<'a> UnwindSafe for NumericReference<'a>

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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 Twhere 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, U> TryFrom<U> for Twhere 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 Twhere 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.