| delay {async} | R Documentation |
"delay" returns a promise which resolves only after the specified
number of seconds. This uses the R event loop via later.
In an [async] construct you can use await(delay(secs)) to yield
control, for example if you need to poll in a loop.
delay(secs, expr = NULL)
secs |
The promise will resolve after at least this many seconds. |
expr |
The value to resolve with; will be forced after the delay. |
An object with class "promise".
# print a message after a few seconds
async({await(delay(10)); cat("Time's up!\n")})