polars::prelude::byte_source

Trait ByteSource

Source 
pub trait ByteSource: Send + Sync {
    // Required methods
    async fn get_size(&self) -> Result<usize, PolarsError>;
    async fn get_range(
        &self,
        range: Range<usize>,
    ) -> Result<MemSlice, PolarsError>;
    async fn get_ranges(
        &self,
        ranges: &mut [Range<usize>],
    ) -> Result<HashMap<usize, MemSlice, RandomState>, PolarsError>;
}
Available on crate features polars-io and cloud only.

Required Methods§

Source

async fn get_size(&self) -> Result<usize, PolarsError>

Source

async fn get_range(&self, range: Range<usize>) -> Result<MemSlice, PolarsError>

§Panics

Panics if range is not in bounds.

Source

async fn get_ranges( &self, ranges: &mut [Range<usize>], ) -> Result<HashMap<usize, MemSlice, RandomState>, PolarsError>

Note: This will mutably sort ranges for coalescing.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§