I am using Smarty 2 and wondered if there is a better/tidier way to use `assign` to set the value of `evenRow` on one line, rather than the 5 lines below.

```
{if $evenRow == 'on'}
   {assign var='evenRow' value='off'}
{else}
   {assign var='evenRow' value='on'}
{/if}

```

Considering Smarty can be quite closely aligned with PHP in places i'm surprised this isn't easily found online, as doing something like this in PHP would be straightforward.