Trait send_sync_static::FutureSSS

pub trait FutureSSS: Future + SSS { }

A marker which identifies a Future (but not necessarily its output) as Send, Sync, and 'static.

This trait is automatically implemented for futures which fulfill these requirements, and it is intended to be used as a shorthand for writing out each bound. For example:

use send_sync_static::{FutureSSS, SSS};
pub fn send_data<D: SSS>(data: D) -> impl FutureSSS {
  // Guarantees the async block is always Send, Sync, and 'static
  async move {
    // Do something here
    drop(data)
  }
}

This can be combined with RPITIT, an upcoming stable feature.

use send_sync_static::FutureSSS;
pub trait Database {
  fn add_user(&self, user: String) -> impl FutureSSS<Output = ()>;
}

Code written explicitly using Send, Sync, and 'static is fully interchangeable with this trait.

Implementors

impl<F> FutureSSS for Fwhere F: Future + SSS,