async_ops: Async operations

In coro: 'Coroutines' for R

Async operations

Description

Customisation point for the async package or any concurrency framework that defines a "then" operation. Assign the result of async_ops() to the .__coro_async_ops__. symbol in your namespace.

Usage

async_ops(package, then, as_promise)

Arguments

package	The package name of the framework as a string. async() and async_generator() check that the package is installed at runtime.
then	A function of two arguments. The first argument is a promise object (as created by as_promise). The second argument is a callback function that must be called once the promise object is resolved.
as_promise	A function of one argument. It should be a no-op when passed a promise object, and otherwise wrap the value in a resolved promise.

coro documentation built on July 19, 2022, 5:06 p.m.