[ITK] [ITK-users] itk::LightObject does not expose operator<< in .h header

[Matt McCormick]

Hi Taylor,

I think it would be reasonable to increase the visibility of that function.

Thanks,
Matt

On Fri, Mar 21, 2014 at 2:38 PM, Taylor Braun-Jones
<taylor at braun-jones.org> wrote:
> Hello Insight-users,
>
> I'm trying to print an itk::LightObject-derived class with something like:
>
> MyClass::Pointer fooBar = MyClass::New();
> std::cout << *fooBar;
>
>
> But it doesn't seem to be possible because the declaration of operator<< is
> not exposed in itkLightObject.h (although one is defined in
> itkLightObject.cxx). I know I can use fooBar->Print(std::cout), but this
> doesn't work when I'm trying to print to a logging system that was designed
> to support any object with an overloaded operator<< defined. I am able to
> get things to work by defining the operator myself:
>
> namespace std
> {
> ostream &
> operator<<(ostream & os, const itk::LightObject & o)
> {
>    o.Print(os);
>    return os;
> }
> }
>
>
> But is this the intended usage?
>
> Thanks,
> Taylor
>
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