rerun: Re-run expressions multiple times.

Description Usage Arguments Value Lifecycle Examples

View source: R/rerun.R

Description

\Sexpr[results=rd, stage=render]{purrr:::lifecycle("questioning")}

This is a convenient way of generating sample data. It works similarly to replicate(..., simplify = FALSE).

Usage

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rerun(.n, ...)

Arguments

.n

Number of times to run expressions

...

Expressions to re-run.

Value

A list of length .n. Each element of ... will be re-run once for each .n.

There is one special case: if there's a single unnamed input, the second level list will be dropped. In this case, rerun(n, x) behaves like replicate(n, x, simplify = FALSE).

Lifecycle

rerun() is in the questioning lifecycle stage because we are no longer convinced NSE functions are a good fit for purrr. Also, rerun(n, x) can just as easily be expressed as map(1:n, ~ x) (with the added benefit of being passed the current index as argument to the lambda).

Examples

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10 %>% rerun(rnorm(5))
10 %>%
  rerun(x = rnorm(5), y = rnorm(5)) %>%
  map_dbl(~ cor(.x$x, .x$y))

tidyverse/purrr documentation built on Jan. 11, 2019, 12:14 p.m.