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Entry

Enum Entry 

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pub enum Entry<'m> {
    Occupied(&'m mut Value),
    Vacant(&'m mut Map, String),
}
Available on crate feature tree only.
Expand description

A member of an object, which has a value or none yet: Map::entry.

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Occupied(&'m mut Value)

The member has this value.

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Vacant(&'m mut Map, String)

The object has no member of this name.

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impl<'m> Entry<'m>

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pub fn or_insert(self, value: Value) -> &'m mut Value

The value of the member, which is value when the object had none.

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pub fn or_insert_with(self, value: impl FnOnce() -> Value) -> &'m mut Value

The value of the member, which value gives when the object had none.

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pub fn or_default(self) -> &'m mut Value

The value of the member, which is null when the object had none.

Auto Trait Implementations§

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impl<'m> !UnwindSafe for Entry<'m>

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impl<'m> Freeze for Entry<'m>

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impl<'m> RefUnwindSafe for Entry<'m>

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impl<'m> Send for Entry<'m>

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impl<'m> Sync for Entry<'m>

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impl<'m> Unpin for Entry<'m>

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impl<'m> UnsafeUnpin for Entry<'m>

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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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.