Type Alias GenericStringArray

Source

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

Expand description

A GenericByteArray for storing str

Aliased Type§

struct GenericStringArray<OffsetSize> {
    data_type: DataType,
    value_offsets: OffsetBuffer<<GenericStringType<OffsetSize> as ByteArrayType>::Offset>,
    value_data: Buffer,
    nulls: Option<NullBuffer>,
}

Fields§

§data_type: DataType§value_offsets: OffsetBuffer<<GenericStringType<OffsetSize> as ByteArrayType>::Offset>§value_data: Buffer§nulls: Option<NullBuffer>

Implementations§

Source §

impl<OffsetSize: OffsetSizeTrait> GenericStringArray<OffsetSize>

Source

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.

Source

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

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

Source

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

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()

Source

pub fn try_from_binary( v: GenericBinaryArray<OffsetSize>, ) -> Result<Self, ArrowError>

Fallibly creates a GenericStringArray from a GenericBinaryArray returning an error if GenericBinaryArray contains invalid UTF-8 data

Trait Implementations§

Source §