From: Jamis Buck <jgb3@...>
Date: 2004-11-11T03:23:22+09:00
Subject: Re: Converting nil to NULL in a C extension

Daniel Berger wrote:
> Hi all,
> 
> I find I'm often doing something like this:
> 
> static VALUE foofoo(int argc, VALUE* argv, VALUE self)
>    char* foo;
>    VALUE rbFoo;
>    ...
> 
>    rb_scan_args(argc,argv,"01",&rbFoo);
> 
>    if(NIL_P(rbFoo)){
>       foo = NULL;
>    }
>    else{
>       foo = StringValuePtr(rbFoo);
>    }

There's always the ternary operator:

   foo = NIL_P(rbFoo) ? NULL : StringValuePtr(rbFoo);

- Jamis

-- 
Jamis Buck
jgb3@email.byu.edu
http://www.jamisbuck.org/jamis