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df70d7708d
Enables markdown. Only observed one non-whitespace difference on a line
that had used backticks previously which were previously not being
parsed as a code block.
-explicitly using the `title` parameter of the top-level page function.
+explicitly using the \code{title} parameter of the top-level page function.
35 lines
1.2 KiB
R
35 lines
1.2 KiB
R
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/utils.R
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\name{repeatable}
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\alias{repeatable}
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\title{Make a random number generator repeatable}
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\usage{
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repeatable(rngfunc, seed = stats::runif(1, 0, .Machine$integer.max))
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}
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\arguments{
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\item{rngfunc}{The function that is affected by the R session's seed.}
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\item{seed}{The seed to set every time the resulting function is called.}
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}
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\value{
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A repeatable version of the function that was passed in.
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}
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\description{
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Given a function that generates random data, returns a wrapped version of
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that function that always uses the same seed when called. The seed to use can
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be passed in explicitly if desired; otherwise, a random number is used.
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}
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\note{
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When called, the returned function attempts to preserve the R session's
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current seed by snapshotting and restoring
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\code{\link[base]{.Random.seed}}.
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}
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\examples{
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rnormA <- repeatable(rnorm)
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rnormB <- repeatable(rnorm)
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rnormA(3) # [1] 1.8285879 -0.7468041 -0.4639111
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rnormA(3) # [1] 1.8285879 -0.7468041 -0.4639111
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rnormA(5) # [1] 1.8285879 -0.7468041 -0.4639111 -1.6510126 -1.4686924
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rnormB(5) # [1] -0.7946034 0.2568374 -0.6567597 1.2451387 -0.8375699
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}
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