has_element

Simply checks if a list contains a given object.<ul>
<li>NB1: Objects are compared with identity.</li>
<li>NB2: Only use this on lists with complex objects, for simpler structures there are faster operations.</li>
<li>NB3: Clones of R6 objects are not detected.</li>
</ul>

Frequently used helper functions and assertions used in
'mlr3' and its companion packages. Comes with helper functions for
functional programming, for printing, to work with 'data.table', as
well as some generally useful 'R6' classes. This package also
supersedes the package 'BBmisc'.

Michel Lang

mlr3misc

Helper Functions for 'mlr3'

Patrick Schratz

has_element function

<dl><dt>.x</dt>
<dd>(<code><a href="/link/list()?package=mlr3misc&version=0.15.1" data-mini-rdoc="mlr3misc::list()">list()</a></code> | atomic <code><a href="/link/vector()?package=mlr3misc&version=0.15.1" data-mini-rdoc="mlr3misc::vector()">vector()</a></code>).</dd>
<dt>.y</dt>
<dd>(<code>any</code>) 
Object to test for.</dd></dl>

Arguments

Check if an Object is Element of a List — has_element

<dl>

<dt>.x</dt>
<dd>(<code><a href='https://rdrr.io/r/base/list.html'>list()</a></code> | atomic <code><a href='https://rdrr.io/r/base/vector.html'>vector()</a></code>).</dd>


<dt>.y</dt>
<dd>(<code>any</code>) 
Object to test for.</dd>

</dl>

has_element: Check if an Object is Element of a List

Description

Usage

Arguments

Examples