cache: Cache or Retrieve Computation Results

In cache: Cache and Retrieve Computation Results

Cache or Retrieve Computation Results

Description

Cache or retrieve an evaluated expression. Results are always made available in the current environment.

Usage

cache(..., .cachedir = here(".cache-R"), .rerun = FALSE)

Arguments

...	Named expressions to be cached or retrieved.
.cachedir	Directory where cache files are stored. Default is a directory called .cache-R located at the project root.
.rerun	Whether or not to clear the cache and re-run the provided expressions. Defaults to FALSE.

Examples

tmp <- tempdir()

# Takes 1 second to execute
cache(a = {
  Sys.sleep(1)
  "Hello World"
}, .cachedir = tmp)

# Executes instantly
cache(a = {
  Sys.sleep(1)
  "Hello World"
}, .cachedir = tmp)

# Result is available in the current environment
print(a)

# Re-run the expression
cache(a = {
  Sys.sleep(1)
  "Hello World"
}, .cachedir = tmp, .rerun = TRUE)

cache documentation built on March 27, 2022, 1:06 a.m.