list_extract_spec

A standardized user interface for column selection, that
facilitates dataset merging in 'teal' framework.

Dawid Kaledkowski

teal.transform

Functions for Extracting and Merging Data in the 'teal'
Framework

list_extract_spec function

<dl><dt>x</dt>
<dd>(<code>data_extract_spec</code> or <code>list</code>) of <code>data_extract_spec</code> elements.</dd>
<dt>allow_null</dt>
<dd>(<code>logical</code>) whether x can be <code>NULL</code>.</dd></dl>

Arguments

Make sure that the extract specification is in list format — list_extract_spec

<dl>

<dt>x</dt>
<dd>(<code>data_extract_spec</code> or <code>list</code>) of <code>data_extract_spec</code> elements.</dd>


<dt>allow_null</dt>
<dd>(<code>logical</code>) whether x can be <code>NULL</code>.</dd>

</dl>

list_extract_spec: Make sure that the extract specification is in list format

Description

Usage

Value

Arguments