title: Avoid repeating as_tibble() in dplyr
body: <p>Currently, I'm using multiple <code>as_tibble(a_matrix)</code> commands in my last line of code. To avoid repeating this command, what would be the shortest alternative?</p>
  <pre><code>(T1 = matrix(c(2,3,5,2, 3,4,4,5),4,2)  )      
  colnames(T1) &lt;- c(&quot;y1&quot;, &quot;y2&quot;)
  
  (T2 = matrix(c(4:6, 8,6,7),3,2)  )      
  colnames(T2) &lt;- colnames(T1) 
  
  (T3 = matrix(c(7,8,10,9,7, 6,7,8,5,6),5,2)  )      
  colnames(T3) &lt;- colnames(T1) 
  
  # bind rows of T1,T2 &amp; T3 score matricies for the 3 groups:
  (dat &lt;- bind_rows(as_tibble(T1),as_tibble(T2),as_tibble(T3),.id = &quot;group&quot;))
  </code></pre>