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VectorMut

better_duck_core::udf

Struct VectorMut 

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pub struct VectorMut<'a> { /* private fields */ }
Expand description

Read and write views over a single column of a DataChunkHandle, plus the ScalarArg/ScalarRet marshalling traits. An exclusive, writable view of one column of a data chunk.

Built from &mut DataChunkHandle, so the borrow checker guarantees no other VectorRef/VectorMut over the same column coexists with it.

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impl<'a> VectorMut<'a>

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pub fn set_null(&mut self, row: usize)

Marks the value at row as NULL.

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pub fn set<T: ScalarRet>(&mut self, row: usize, value: T) -> UdfResult<()>

Writes value at row.

§Errors

Returns an error if T’s conversion to a DuckDB value fails.

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impl<'a> !Send for VectorMut<'a>

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impl<'a> !Sync for VectorMut<'a>

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impl<'a> !UnwindSafe for VectorMut<'a>

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impl<'a> Freeze for VectorMut<'a>

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impl<'a> RefUnwindSafe for VectorMut<'a>

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impl<'a> Unpin for VectorMut<'a>

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impl<'a> UnsafeUnpin for VectorMut<'a>

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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 = 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.