async-trait 0.1.89

Type erasure for async trait methods
Documentation 
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use async_trait::async_trait;

#[async_trait]
trait Interface {
    async fn f(&self);
    async fn g(&self) -> ();
}

struct Thing;

#[async_trait]
impl Interface for Thing {
    async fn f(&self) {
        0
    }
    async fn g(&self) {
        0
    }
}

fn main() {}