Trait DataTypeExt

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pub trait DataTypeExt {
    // Required methods
    fn is_binary_like(&self) -> bool;
    fn is_struct(&self) -> bool;
    fn is_fixed_stride(&self) -> bool;
    fn is_dictionary(&self) -> bool;
    fn byte_width(&self) -> usize;
    fn byte_width_opt(&self) -> Option<usize>;
}

Required Methods§

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fn is_binary_like(&self) -> bool

Returns true if the data type is binary-like, such as (Large)Utf8 and (Large)Binary.

use lance_arrow::*;
use arrow_schema::DataType;

assert!(DataType::Utf8.is_binary_like());
assert!(DataType::Binary.is_binary_like());
assert!(DataType::LargeUtf8.is_binary_like());
assert!(DataType::LargeBinary.is_binary_like());
assert!(!DataType::Int32.is_binary_like());

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fn is_struct(&self) -> bool

Returns true if the data type is a struct.

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fn is_fixed_stride(&self) -> bool

Check whether the given Arrow DataType is fixed stride.

A fixed stride type has the same byte width for all array elements This includes all PrimitiveType’s Boolean, FixedSizeList, FixedSizeBinary, and Decimals

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