Trait futures_lite::io::AsyncSeekExt[−][src]

pub trait AsyncSeekExt: AsyncSeek {
    fn seek(&mut self, pos: SeekFrom) -> SeekFuture<'_, Self>ⓘ
Notable traits for SeekFuture<'_, S>
impl<S: AsyncSeek + Unpin + ?Sized> Future for SeekFuture<'_, S>    type Output = Result<u64>;

    where
        Self: Unpin,
    { ... }
}
Expand description

Extension trait for AsyncSeek.

Provided methods

fn seek(&mut self, pos: SeekFrom) -> SeekFuture<'_, Self>ⓘ

Notable traits for SeekFuture<'_, S>

impl<S: AsyncSeek + Unpin + ?Sized> Future for SeekFuture<'_, S> type Output = Result<u64>;
 where
    Self: Unpin, [src]

Seeks to a new position in a byte stream.

Returns the new position in the byte stream.

A seek beyond the end of stream is allowed, but behavior is defined by the implementation.

Examples

use futures_lite::io::{AsyncSeekExt, Cursor, SeekFrom};

let mut cursor = Cursor::new("hello");

// Move the cursor to the end.
cursor.seek(SeekFrom::End(0)).await?;

// Check the current position.
assert_eq!(cursor.seek(SeekFrom::Current(0)).await?, 5);

Implementors

impl<S: AsyncSeek + ?Sized> AsyncSeekExt for S[src]