Trait ReadAt 

pub trait ReadAt {
    type Error: Error + 'static;

    // Required methods
    fn read_exact_at(
        &self,
        offset: u64,
        buf: &mut [u8],
    ) -> Result<(), Self::Error>;
    fn size(&self) -> Result<u64, Self::Error>;
}

Source that reads bytes at an offset.

Required Associated Types

type Error: Error + 'static

Error of a failed read.

Required Methods

fn read_exact_at(&self, offset: u64, buf: &mut [u8]) -> Result<(), Self::Error>

Fills buf with the bytes at offset.

Errors

Returns an error if the read fails or the source ends before buf is full.

fn size(&self) -> Result<u64, Self::Error>

Returns the size of the source in bytes.

Errors

Returns an error if the size can’t be determined.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl ReadAt for File

Available on crate feature std and (Unix or Windows) only.

type Error = Error

fn read_exact_at(&self, offset: u64, buf: &mut [u8]) -> Result<()>

fn size(&self) -> Result<u64>

impl ReadAt for [u8]

type Error = SliceError

fn read_exact_at(&self, offset: u64, buf: &mut [u8]) -> Result<(), SliceError>

fn size(&self) -> Result<u64, SliceError>

impl<T: ReadAt + ?Sized> ReadAt for &T

type Error = <T as ReadAt>::Error

fn read_exact_at(&self, offset: u64, buf: &mut [u8]) -> Result<(), Self::Error>

fn size(&self) -> Result<u64, Self::Error>

Implementors