title: How to access same variable across multiple dataframes in a list in R?
body: <p>I'm working on a new project where I'm have a list of tibbles/dataframes. Each dataframe is the weekly outcome of a program, and the dataframes have the same variables each week (e.g. date, time, participants, topic), but varying numbers of rows each week. I would like to be able to access all entries of one variable across all the dataframes without using a loop. For instance, right now, if I want all the names, I have:</p>
  <pre><code>all_emails&lt;-Fall2021[[1]]$email
  for (i in 2:length(Fall2021)) {
    all_emails&lt;-c(all_signups,Fall2021[[i]]$email)
  }
  </code></pre>
  <p>Is there an easier way to do this without a loop. I know I can access a single variable in a single data frame with:</p>
  <pre><code>Fall2021[[1]]$email
  </code></pre>
  <p>But is there something like this, that actually works:</p>
  <pre><code>Fall2021[[:]]$email
  </code></pre>