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

Description Usage Arguments Value See Also Examples

View source: R/memoise.R

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

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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

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

hadley/memoise documentation built on Oct. 12, 2018, 11:06 a.m.