lmdb_zero

Struct Ignore

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pub struct Ignore;
Expand description

Empty type used to indicate “don’t care” when reading values from LMDB.

FromLmdbBytes is implemented for this type by simply returning its only value without inspecting anything.

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impl FromLmdbBytes for Ignore

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fn from_lmdb_bytes(_: &[u8]) -> Result<&Ignore, String>

Given a byte slice, return an instance of Self described, or Err with an error message if the given byte slice is not an appropriate value.

Auto Trait Implementations§

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impl Freeze for Ignore

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impl RefUnwindSafe for Ignore

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impl Send for Ignore

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impl Sync for Ignore

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impl Unpin for Ignore

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impl UnwindSafe for Ignore

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> SafeBorrow<T> for T
where T: ?Sized,

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fn borrow_replacement(ptr: &T) -> &T

Given ptr, which was obtained from a prior call to Self::borrow(), return a value with the same nominal lifetime which is guaranteed to survive mutations to Self. 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.