From: Bob Stout 

On 29 Jan 2004 andrew.clarke!3.633.267.0{at}filegate.net wrote:

>  ac>>                      if (tmptext == NULL)
>  ac>>                          return NULL;
>
>  RJT> Or make that
>  RJT>                           if (NULL == tmptext)
>
> Hmm.  Are you left-handed?  (-:

Nope, an old C programmer's trick. One of the more common C errors is
typing "=" when you mean "==". If your warning level is
set too low...

if (tmptext = NULL)

...may pass unnoticed. You may even ignore it if it is reported as a
warning. However...

if (NULL = tmptext)

...will always generate a compile-time error you cannot ignore. It will
*force* you to fix it.

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