existing_files: Find file paths that exist

In xfun: Supporting Functions for Packages Maintained by 'Yihui Xie'

Find file paths that exist

Description

This is a shorthand of x[file.exists(x)], and optionally returns the first existing file path.

Usage

existing_files(x, first = FALSE, error = TRUE)

Arguments

x	A vector of file paths.
first	Whether to return the first existing path. If TRUE and no specified files exist, it will signal an error unless the argument error = FALSE.
error	Whether to throw an error when first = TRUE but no files exist. It can also take a character value, which will be used as the error message.

Value

A vector of existing file paths.

Examples

xfun::existing_files(c("foo.txt", system.file("DESCRIPTION", package = "xfun")))

xfun documentation built on Nov. 1, 2024, 1:06 a.m.