title: How to dynamically create columns with tidy evaluation?
body: <p>I'd like to create variables using a specific pattern. I need to include the variable name as a tidy evaluation in the mutate function. I made a custom example below:</p>
  <pre><code>  iris %&gt;%
    rename(Sepal = Sepal.Width, Petal = Petal.Width) %&gt;%
    mutate_at(c('Sepal', 'Petal'), list(test = ~ . / !!sym(paste0(., '.Length'))))
  </code></pre>