as.promise.mirai: Make Mirai Promise

In mirai: Minimalist Async Evaluation Framework for R

Make Mirai Promise

Description

Creates a 'promise' from a 'mirai'.

Usage

## S3 method for class 'mirai'
as.promise(x)

Arguments

x	an object of class 'mirai'.

Details

This function is an S3 method for the generic as.promise for class 'mirai'.

Requires the packages promises and later.

Allows a 'mirai' to be used with the promise pipe %...>%, which schedules a function to run upon resolution of the 'mirai'.

Value

A 'promise' object.

Examples

if (interactive() &&
  requireNamespace("promises", quietly = TRUE) &&
  requireNamespace("later", quietly = TRUE)) {

library(promises)

p <- as.promise(mirai("example"))
print(p)
is.promise(p)

p2 <- mirai("completed") %...>% identity()
p2$then(cat)
is.promise(p2)

}

mirai documentation built on Nov. 16, 2023, 5:08 p.m.