Trait Scan

pub trait Scan:
    Send
    + Sync
    + Unpin {
    // Required method
    fn next(
        &mut self,
    ) -> impl Future<Output = Result<Option<String>>> + MaybeSend;
}

Scan is the async iterator returned by Adapter::scan.

Required Methods

fn next(&mut self) -> impl Future<Output = Result<Option<String>>> + MaybeSend

Fetch the next key in the current key prefix

Ok(None) means no further key will be returned

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.

Implementations on Foreign Types

impl Scan for ()

A noop implementation of Scan

async fn next(&mut self) -> Result<Option<String>>

impl<T: ScanDyn + ?Sized> Scan for Box<T>

async fn next(&mut self) -> Result<Option<String>>

Implementors