On Tue, May 17, 2005 at 12:24:14PM -0700, Julian Pellico wrote:
> Hi,
Hi Julian,
> How can I determine whether a ColData item is null across versions of
> this library?
I'm afraid a macro might be the only way.
> The test in the old version I was using was is_null(), but in a newer
> version it's ism_bNull(). I would prefer to write code that can be
> linked against either of these versions...
(Are you using the released packages on sourceforge.net or CVS?)
I'm not a big fan of the naming convention used in ColData, although I
don't like the old names either.
For the record:
version 1.7 version 1.9
GET: bool is_null() const -> bool ism_bNull() const
SET: void it_is_null() -> void is_null()
I don't like ism_bNull() at all, since it uses the name of a private
variable in the public interface. This exposes implementation detail and
makes the name of the function hard to remember unless you know the
implementation.
I would prefer to use is_null() for both getting and setting the value:
version 1.7 version 1.9 version 2.0
GET: bool is_null() const -> bool ism_bNull() -> bool is_null()
SET: void it_is_null() -> void is_null() -> void is_null(bool)
is_null() with no argument queries the value and is_null() with argument
modifies it.
Unfortunately, I don't think it will be possible to switch between
a new version and 1.7 and be link-compatible.
jon
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