embrace-operator

curly-curly

<p>The embrace operator <code>{{</code> is used to create functions that call
other data-masking functions. It transports a
data-masked argument (an argument that can refer to columns of a
data frame) from one function to another.</p>
<p><div class="sourceCode r"></div></p><pre><code>my_mean &lt;- function(data, var) {
  dplyr::summarise(data, mean = mean({{ var }}))
}
</code></pre><p></p>

A toolbox for working with base types, core R features
like the condition system, and core 'Tidyverse' features like tidy
evaluation.

Lionel Henry

rlang

Functions for Base Types and Core R and 'Tidyverse' Features

Hadley Wickham

mikefc 

Yann Collet

Posit, PBC 

embrace-operator function

<p></p><p>
</p><p><code>{{</code> combines <code>enquo()</code> and <code>!!</code> in one
step. The snippet above is equivalent to:</p>
<p><div class="sourceCode r"></div></p><pre><code>my_mean &lt;- function(data, var) {
  var &lt;- enquo(var)
  dplyr::summarise(data, mean = mean(!!var))
}
</code></pre><p></p>

Under the hood

<p>The embrace operator <code>{{</code> is used to create functions that call
other data-masking functions. It transports a
data-masked argument (an argument that can refer to columns of a
data frame) from one function to another.</p>
<p><div class="sourceCode r"></p><pre><code>my_mean &lt;- function(data, var) {
  dplyr::summarise(data, mean = mean({{ var }}))
}
</code></pre><p></div></p>

Embrace operator {{ — embrace-operator




<p><code>{{</code> combines <code>enquo()</code> and <code>!!</code> in one
step. The snippet above is equivalent to:</p>
<p><div class="sourceCode r"></p><pre><code>my_mean &lt;- function(data, var) {
  var &lt;- enquo(var)
  dplyr::summarise(data, mean = mean(!!var))
}
</code></pre><p></div></p>

embrace-operator: Embrace operator `{{`

Description

Arguments

Under the hood

See Also