Selector

datasets

'Apache' 'Arrow' <https://arrow.apache.org/> is a cross-language
development platform for in-memory data. It specifies a standardized
language-independent columnar memory format for flat and hierarchical data,
organized for efficient analytic operations on modern hardware. This
package provides an interface to the 'Arrow C++' library.

Neal Richardson

arrow

Integration to 'Apache' 'Arrow'

Romain François

Jeroen Ooms

Javier Luraschi

Jeffrey Wong

Apache Arrow 

Selector function

The <code>$create()</code> factory method instantiates a <code>Selector</code> given the 3 fields
described below.

Factory

<ul>
<li><code>base_dir</code>: The directory in which to select files. If the path exists but
doesn't point to a directory, this should be an error.</li>
<li><code>allow_non_existent</code>: The behavior if <code>base_dir</code> doesn't exist in the
filesystem. If <code>FALSE</code>, an error is returned. If <code>TRUE</code>, an empty
selection is returned</li>
<li><code>recursive</code>: Whether to recurse into subdirectories.</li>
</ul>

Fields

file selector — Selector

file selector

Selector: file selector

Description

Usage

Arguments

Factory

Fields