Type Definition arrow_array::array::GenericStringArray

pub type GenericStringArray<OffsetSize> = GenericByteArray<GenericStringType<OffsetSize>>;

Generic struct for [Large]StringArray

See StringArray and LargeStringArray for storing specific string data.

Implementations

impl<OffsetSize: OffsetSizeTrait> GenericStringArray<OffsetSize>

pub const fn get_data_type() -> DataType

👎Deprecated: please use Self::DATA_TYPE instead

Get the data type of the array.

pub fn num_chars(&self, i: usize) -> usize

Returns the number of Unicode Scalar Value in the string at index i.

Performance

This function has O(n) time complexity where n is the string length. If you can make sure that all chars in the string are in the range U+0x0000 ~ U+0x007F, please use the function value_length which has O(1) time complexity.

pub fn from_iter_values<Ptr, I>(iter: I) -> Selfwhere
    Ptr: AsRef<str>,
    I: IntoIterator<Item = Ptr>,

Creates a GenericStringArray based on an iterator of values without nulls

pub fn take_iter<'a>(
    &'a self,
    indexes: impl Iterator<Item = Option<usize>> + 'a
) -> impl Iterator<Item = Option<&'_ str>> + 'a

Returns an iterator that returns the values of array.value(i) for an iterator with each element i

pub unsafe fn take_iter_unchecked<'a>(
    &'a self,
    indexes: impl Iterator<Item = Option<usize>> + 'a
) -> impl Iterator<Item = Option<&'_ str>> + 'a

Returns an iterator that returns the values of array.value(i) for an iterator with each element i

Safety

caller must ensure that the indexes in the iterator are less than the array.len()

Trait Implementations

impl<OffsetSize: OffsetSizeTrait> From<GenericByteArray<GenericBinaryType<OffsetSize>>> for GenericStringArray<OffsetSize>

fn from(v: GenericBinaryArray<OffsetSize>) -> Self

Converts to this type from the input type.

impl<OffsetSize: OffsetSizeTrait> From<GenericListArray<OffsetSize>> for GenericStringArray<OffsetSize>

fn from(v: GenericListArray<OffsetSize>) -> Self

Converts to this type from the input type.

impl<OffsetSize: OffsetSizeTrait> From<Vec<&str, Global>> for GenericStringArray<OffsetSize>

fn from(v: Vec<&str>) -> Self

Converts to this type from the input type.

impl<OffsetSize: OffsetSizeTrait> From<Vec<Option<&str>, Global>> for GenericStringArray<OffsetSize>

fn from(v: Vec<Option<&str>>) -> Self

Converts to this type from the input type.

impl<OffsetSize: OffsetSizeTrait> From<Vec<String, Global>> for GenericStringArray<OffsetSize>

fn from(v: Vec<String>) -> Self

Converts to this type from the input type.

impl<'a, Ptr, OffsetSize: OffsetSizeTrait> FromIterator<&'a Option<Ptr>> for GenericStringArray<OffsetSize>where
    Ptr: AsRef<str> + 'a,

fn from_iter<I: IntoIterator<Item = &'a Option<Ptr>>>(iter: I) -> Self

Creates a GenericStringArray based on an iterator of Option references.

impl<Ptr, OffsetSize: OffsetSizeTrait> FromIterator<Option<Ptr>> for GenericStringArray<OffsetSize>where
    Ptr: AsRef<str>,

fn from_iter<I: IntoIterator<Item = Option<Ptr>>>(iter: I) -> Self

Creates a GenericStringArray based on an iterator of Options

impl<OffsetSize: OffsetSizeTrait> PartialEq<GenericByteArray<GenericStringType<OffsetSize>>> for GenericStringArray<OffsetSize>

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.