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,
    { ... }
}

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);

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Implementors

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