Shortcut for a = b + a;
<p>So I've realised that <code>a += b;</code> is actually <code>a = a + b;</code>. (Try replacing <code>a</code>, <code>b</code> with strings.)</p>

<p>Is there a shortcut for <code>a = b + a;</code>? I've tried <code>a =+ b;</code> but that doesn't seem to work.</p>
