crew_async {crew}

Local asynchronous client object.

Description

Create an R6 object to manage local asynchronous quick tasks with error detection.

Usage

crew_async(workers = NULL)

Arguments

workers

Number of local mirai daemons to run asynchronous tasks. If NULL, then tasks will be evaluated synchronously.

Details

crew_async() objects are created inside launchers to allow launcher plugins to run local tasks asynchronously, such as calls to cloud APIs to launch serious remote workers.

Value

An R6 async client object.

See Also

Other async: crew_class_async

Examples

if (identical(Sys.getenv("CREW_EXAMPLES"), "true")) {
x <- crew_async()
x$start()
out <- x$eval(1 + 1)
mirai::call_mirai_(out)
out$data # 2
x$terminate()
}