existing_files

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

Miscellaneous functions commonly used in other packages maintained by 'Yihui Xie'.

Yihui Xie

xfun

Supporting Functions for Packages Maintained by 'Yihui Xie'

Wush Wu

Daijiang Li

Xianying Tan

Salim Brüggemann

Christophe Dervieux

existing_files function

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

Arguments

Find file paths that exist — existing_files

<dl>

<dt>x</dt>
<dd>A vector of file paths.</dd>


<dt>first</dt>
<dd>Whether to return the first existing path. If <code>TRUE</code> and no
specified files exist, it will signal an error unless the argument
<code>error = FALSE</code>.</dd>


<dt>error</dt>
<dd>Whether to throw an error when <code>first = TRUE</code> but no files
exist. It can also take a character value, which will be used as the error
message.</dd>

</dl>

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existing_files: Find file paths that exist

Description

Usage

Value

Arguments

Examples