Iter

core::option

Struct Iter 

1.6.0 · Source 
pub struct Iter<'a, A: 'a> { /* private fields */ }
Expand description

An iterator over a reference to the Some variant of an Option.

The iterator yields one value if the Option is a Some, otherwise none.

This struct is created by the Option::iter function.

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impl<'a, A> Freeze for Iter<'a, A>

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impl<'a, A> Send for Iter<'a, A>
where A: Sync,

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impl<'a, A> Sync for Iter<'a, A>
where A: Sync,

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impl<'a, A> Unpin for Iter<'a, A>
where A: Unpin,

Blanket Implementations§

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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, 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.