Imagine a world in which the default syntax for assignment was "x &lt;- 3" and equivalently "3 -&gt; x".,(reply>), Look up POP-11. It has the concept of an operand stack, so assignments go naturally left-to-right. E.g.<br><br>    a, b -&gt; a -&gt; b<br><br>swaps the values of “a” and “b”.