seed_funs: Do a computation with a given seed.

In harvestr: A Parallel Simulation Framework

Description

Do a computation with a given seed.

safe version of retrieving the .Random.seed

Get or Set Current Seed - Safe Version

Usage

withseed(seed, expr, envir = parent.frame(),
  cache = getOption("harvestr.use.cache", defaults$cache()),
  cache.dir = getOption("harvestr.cache.dir", defaults$cache.dir()),
  time = getOption("harvestr.time", defaults$time()))

get.seed()

replace.seed(seed, delete = TRUE)

GetOrSetSeed()

Arguments

seed	a valid seed value
expr	expression to evaluate.
envir	the environment to evaluate the code in.
cache	should results be cached or retrieved from cache.
cache.dir	Where should cached results be saved to/retrieve from.
time	should results be timed?
delete	logical to delete if seed is null.

Details

Compute the expr with the given seed, replacing the global seed after compuatations are finished.

does not replace the global .Random.seed

Replaces the .Random.seed with seed unless seed is null, then it will delete the .Random.seed if delete=T

Always returns a valid seed. Useful for grabbing a seed used to generate a random object.

Value

the .Random.seed if defined, otherwise NULL

a valid .Random.seed value.

Note

Not parallel compatible, this modifies the global environment, while processing.

See Also

set.seed

harvestr documentation built on May 30, 2017, 2:39 a.m.