On Sun, Feb 08, 2015 at 10:17:40PM +0100, Allan Sandfeld Jensen wrote:
> What would be the point of macros if they always expanded? The entire point
> and usefulness of these macros is that they expand to standard keywords when
> those standard keywords exists.
What's the point of using a macro in circumstances where a portable, standard
conforming, safe-to-use, shorter-to-type, version _without_ using a macro
exists?
I.e. in case of a simple pointer initialization, why should one *ever* prefer
void something()
{
Foo *f = Q_NULLPTR;
...
}
over
void something()
{
Foo *f = 0;
...
}
?
For the sake of keeping this part of the discussion simple, I specifically
mean 'Q_NULLPTR, the macro', _not_ 'nullptr', and I specifically mean the
context of initializing a local pointer variable. So: Any advantage? Any
advantage outweighing the disadvantages?
Andre'
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