mirror of
https://github.com/rstudio/shiny.git
synced 2026-02-02 10:45:06 -05:00
dde266768c
These functions were temporarily ripped out of Shiny and moved to the htmltools package. We've discovered that it's safe to keep including them in shiny; as long as the functions in shiny and the functions in htmltools are identical, the user won't receive a conflict warning.
35 lines
1.1 KiB
R
35 lines
1.1 KiB
R
% Generated by roxygen2 (4.0.1): do not edit by hand
|
|
\name{repeatable}
|
|
\alias{repeatable}
|
|
\title{Make a random number generator repeatable}
|
|
\usage{
|
|
repeatable(rngfunc, seed = runif(1, 0, .Machine$integer.max))
|
|
}
|
|
\arguments{
|
|
\item{rngfunc}{The function that is affected by the R session's seed.}
|
|
|
|
\item{seed}{The seed to set every time the resulting function is called.}
|
|
}
|
|
\value{
|
|
A repeatable version of the function that was passed in.
|
|
}
|
|
\description{
|
|
Given a function that generates random data, returns a wrapped version of
|
|
that function that always uses the same seed when called. The seed to use can
|
|
be passed in explicitly if desired; otherwise, a random number is used.
|
|
}
|
|
\note{
|
|
When called, the returned function attempts to preserve the R session's
|
|
current seed by snapshotting and restoring
|
|
\code{\link[base]{.Random.seed}}.
|
|
}
|
|
\examples{
|
|
rnormA <- repeatable(rnorm)
|
|
rnormB <- repeatable(rnorm)
|
|
rnormA(3) # [1] 1.8285879 -0.7468041 -0.4639111
|
|
rnormA(3) # [1] 1.8285879 -0.7468041 -0.4639111
|
|
rnormA(5) # [1] 1.8285879 -0.7468041 -0.4639111 -1.6510126 -1.4686924
|
|
rnormB(5) # [1] -0.7946034 0.2568374 -0.6567597 1.2451387 -0.8375699
|
|
}
|
|
|