Struct Validity

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pub struct Validity<'a> { /* private fields */ }

Expand description

Public Arrow-shaped validity bitmap: one LSB-first bit per row, where one means valid and zero means null.

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impl<'a> Validity<'a>

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pub fn from_bitmap(bits: &'a [u8], bit_len: usize) -> Result<Self>

Borrow bits as a validity bitmap of length bit_len rows.

bits.len() must be at least ceil(bit_len / 8). Bits past bit_len are ignored by the encoder, so callers do not need to zero them. bit_len is rejected above super::MAX_CHUNK_ROWS so the inferred slice length cannot approach isize::MAX on the FFI fabrication path.

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pub fn bit_len(&self) -> usize

Logical length in bits / rows.

Trait Implementations§

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impl<'a> Debug for Validity<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> UnwindSafe for Validity<'a>

Blanket Implementations§

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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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<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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