title: How to check include? at least one element in array, ruby on rails
body: <p>Can I check include? at least one element in array with ruby on rails?? Here my example:</p>
  
  <pre><code>a = 1234
  b = [1,5,6,7,8....]
  if a.include?b[0] == true
     app =&gt; return true
  if a.include?b[0] == true and a.include?b[1] == false and a.include?b[2] == false and ......
     app still return true
  </code></pre>
  
  <p>In the real app, I can't call b[0],b[1],b[2]... like that,So, how can I do to check include? at least one element in array, in rails app? Please help me :)</p>