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Path: utzoo!linus!decvax!decwrl!amd!resonex!cae780!ubvax!megatest!cadvax!jacob
From: jacob@cadvax (Jacobo Bulaevsky)
Newsgroups: net.lang.c
Subject: on1 construct
Message-ID: <124@cadvax>
Date: Thu, 1-Nov-84 20:22:23 EST
Article-I.D.: cadvax.124
Posted: Thu Nov  1 20:22:23 1984
Date-Received: Tue, 6-Nov-84 08:00:35 EST
Reply-To: jacob@cadvax.UUCP (Jacobo Bulaevsky)
Organization: Megatest Corp., San Jose, CA
Lines: 49

I've started functions in the following way:

function ()
{
    static char first_time_in = TRUE;

    if (first_time_in)  {
        first_time_in = FALSE;
	bla, bla, bla...
    };

    etc...
}

One contruct that I've always wanted to have is:

function ()
{
    on1  {
	bla, bla, bla...
    };

    etc...
}

I've been trying to define a macro to do this but haven't been succesful.
What I've come up with looks like:

#define on1(X) static char first_time_in = TRUE; if (first_time_in) {first_time_in = FALSE; X;} 

But unfortunately this macro has to be used like:

    on1  (
        bla, bla, bla...
    );

which is VERY inappropriate.  Can anybody out there think of a better
macro definition, comments, suggestions?

Thanks in advance.

Jacobo Bulaevsky
-- 

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