.urlRemapFn

Internal. The <code>reproducible.urlRemap</code> option may be set to any of:<ul>
<li><code>NULL</code> -- no remapping;</li>
<li>a <code>function(url, filename)</code> (e.g. built with <code>makeUrlRemap()</code>);</li>
<li>a <code>data.frame</code>/<code>data.table</code> manifest with <code>filename</code> and <code>url</code> columns; or</li>
<li>a length-one character path or URL to a CSV with those columns.
This returns a single <code>function(url, filename)</code> (or <code>NULL</code>). For the
<code>data.frame</code>/character forms it builds the function once via <code>makeUrlRemap()</code>
and caches it (keyed on the option value), so the lookup is not rebuilt -- and
a CSV path/URL is not re-read -- on every download. An invalid option value is
ignored with a warning (returns <code>NULL</code>), so it can never break a download.</li>
</ul>

internal

A collection of high-level, machine- and OS-independent tools
for making reproducible and reusable content in R.
The two workhorse functions are 'Cache()' and 'prepInputs()'.
'Cache()' allows for nested caching, is robust to environments and objects
with environments (like functions), and deals with some classes of
file-backed R objects e.g., from 'terra' and 'raster' packages.
Both functions have been developed to be foundational components of data
retrieval and processing in continuous workflow situations. In both functions,
efforts are made to make the first and subsequent calls of functions have
the same result, but faster at subsequent times by way of checksums
and digesting. Several features are still under development, including
cloud storage of cached objects allowing for sharing between users. Several
advanced options are available, see '?reproducibleOptions()'.

Eliot J B

reproducible

Enhance Reproducibility of R Code

Eliot J B McIntire

Alex M Chubaty

Tati Micheletti

Ceres Barros

Ian Eddy

His Majesty the King in Right of Canada, as represented by the Minister of Natural Resources Canada 

.urlRemapFn function

<dl><dt>opt</dt>
<dd>The current value of the <code>reproducible.urlRemap</code> option.</dd></dl>

Arguments

Resolve the reproducible.urlRemap option to a remap function — .urlRemapFn

<dl>

<dt>opt</dt>
<dd>The current value of the <code>reproducible.urlRemap</code> option.</dd>

</dl>

.urlRemapFn: Resolve the `reproducible.urlRemap` option to a remap function

Description

Usage

Value

Arguments