fun_exists_at: Test if a function exists at a given package version

In hughjonesd/apicheck: Explore the Historical API of R Packages

Description

fun_exists_at reports whether a function exists (i.e. is exported) from a package at a specific previous version or date.

Usage

fun_exists_at(fun, version = version_at_date(package, date), package,
  date = NULL, quiet = TRUE, ...)

Arguments

fun	Function name as a character string. fun can be an S3 method; S4 methods aren't yet supported.
version	Version as a character string. If omitted, use the version available at date.
package	Package. Alternatively, specify the function name as e.g. "package::function".
date	Date, as a character string that can be read by as.Date() e.g. "2016-01-01".
quiet	Logical. Try to minimize output from package installation. (Some output comes from R CMD INSTALL and may be unavoidable.)
...	Arguments passed to versions::install.versions() or remotes::install_version(), and thence to install.packages(). Ncpus may be useful.

Value

TRUE or FALSE.

Examples

## Not run: 
fun_exists_at("clipr::dr_clipr", version = "0.3.1")
# or
fun_exists_at("dr_clipr", "clipr", "0.3.1")

## End(Not run)

hughjonesd/apicheck documentation built on Sept. 9, 2019, 12:55 p.m.