R: Return a new number after a given number of seconds

timeout {memoise} | R Documentation

## Return a new number after a given number of seconds

### Description

This function will return a number corresponding to the system time and remain stable until a given number of seconds have elapsed, after which it will update to the current time. This makes it useful as a way to timeout and invalidate a memoised cache after a certain period of time.

### Usage

    timeout(seconds, current = as.numeric(Sys.time()))

### Arguments

`seconds` | Number of seconds after which to timeout.
`current` | The current time as a numeric.

### Value

A numeric that will remain constant until the seconds have elapsed.

### See Also

`memoise`

### Examples

    a <- function(n) { runif(n) }
    memA <- memoise(a, ~timeout(10))
    memA(2)

[Package memoise version 1.1.0 Index]