Function async_scoped::scope_and_collect

pub unsafe async fn scope_and_collect<'a, T: Send + 'static, R, F: FnOnce(&mut Scope<'a, T>) -> R>(
    f: F
) -> (R, Vec<T>)

An asynchronous function that creates a scope and immediately awaits the stream. The outputs of the futures are collected as a Vec and returned along with the output of the block.

Safety

This function is not completely safe: please see cancellation_soundness in tests.rs for a test-case that suggests how this can lead to invalid memory access if not dealt with care.

The caller must ensure that the lifetime 'a is valid until the returned future is fully driven. Dropping the future is okay, but blocks the current thread until all spawned futures complete.