Convert two array in one multidimensional : <p>I have two array : </p>

<pre><code>a = [a,b,c,d]
b = [1,2,3,4]
</code></pre>

<p>And I would like to convert in this </p>

<pre><code>c = [[a,1], [b,2],[c,3],[d,4]]
</code></pre>

<p>I tried <code>a &lt;&lt; b</code> but this does not work, any idea how to convert this ?</p>
