🚀 go-pugleaf

In article <11SEP199219213030@msr.triumf.ca> asnd@msr.triumf.ca (Donald Arseneau) writes:
>In article <6725@vtserf.cc.vt.edu>, gbol@rglnext.geol.vt.edu (Gregory Lampshire) writes...
>> 
>> 
>>I want to set up a macro 
>>	\if <argument #1 is null> do this etc.
>>	\else etc.
>>	\fi
>
>There are a number of ways to do this, but the following is the best.
>(Best in most senses...but not in clarity!)
>There are two types of syntax to check for null parameters:
>\ifnull{#1}\then ... \else...\fi
>\if\naught{#1}...\else...\fi
>Choose the definitions that correspond to the desired syntax.
>
> [bunch of complicated stuff deleted]
>

Won't the following work?  (Yes, I need an answer.)

  \def\\{#1}
  \ifx\empty\\
    % null
  \else
    % not null
  \fi

where \empty is already \defn'd to be {}.

-- 
---------------------------------------------------------------------------
Navindra S Gambhir                                   gambhir@cs.cornell.edu

I would rather write programs to help me write programs than write programs