pull_from_list

R data pipelines commonly require reading and writing data to versioned
directories. Each directory might correspond to one step of a multi-step process,
where that version corresponds to particular settings for that step and a chain of
previous steps that each have their own versions. This package creates a configuration
object that makes it easy to read and write versioned data, based on YAML
configuration files loaded and saved to each versioned folder.

Nathaniel Henry

versioning

Settings and File I/O using a Configuration YAML File

pull_from_list function

<dl><dt>x</dt>
<dd>List to pull items from</dd>
<dt>...</dt>
<dd>List indices to pull. Can be either numeric or (preferably) a character.</dd>
<dt>fail_if_null</dt>
<dd>(logical, default TRUE). Returns an informative error message if
the list index is NULL. This function must always be named.</dd></dl>

Arguments

Safely pull an item from a list — pull_from_list

<dl>

<dt>x</dt>
<dd>List to pull items from</dd>


<dt>...</dt>
<dd>List indices to pull. Can be either numeric or (preferably) a character.</dd>


<dt>fail_if_null</dt>
<dd>(logical, default TRUE). Returns an informative error message if
the list index is NULL. This function must always be named.</dd>

</dl>

pull_from_list: Safely pull an item from a list

Description

Usage

Arguments

Details