timed {oeli}

Interrupt long evaluations

Description

This function interrupts an evaluation after a certain number of seconds. Note the limitations documented in setTimeLimit.

Usage

timed(expression, seconds = Inf, on_time_out = "silent")

Arguments

expression

An R expression to be evaluated.

seconds

The number of seconds.

on_time_out

Defines what action to take if the evaluation time exceeded, either:

• "error" to throw an error exception

• "warning" to return NULL along with a warning

• "silent" (the default) to just return NULL

Value

The value of expression or, if the evaluation time exceeded, whatever is specified for on_time_out.

Examples

foo <- function(x) {
  for (i in 1:10) Sys.sleep(x / 10)
  return(x)
}
timed(foo(0.5), 1)
timed(foo(1.5), 1)