title: ruby on Rails: Merge 2 activerecord arrays
body: <p>I Have 2 arrays such as:</p>
  
  <pre><code>arr1 : {[:day =&gt; 12, :sum_src =&gt; 1234], [:day =&gt; 14, :sum_src =&gt; 24543]}
  arr2 : {[:day =&gt; 12, :sum_dst =&gt; 4234], [:day =&gt; 14, :sum_dst =&gt; 342334]}
  </code></pre>
  
  <p>I want to merge this two arrays into one, so that it looks like:</p>
  
  <pre><code>arr3 : {[:day =&gt; 12, :sum_src =&gt; 1234, :sum_dst =&gt; 4234],[:day =&gt; 14, :sum_src =&gt; 24543, :sum_dst =&gt; 342334]}
  </code></pre>
  
  <p>Is it possible? And how to do this ? </p>