[vtkusers] how to know wheter an smart pointer is null

[Aron Helser]

Hi!
I believe all the smart pointers have a boolean operator, so you can just
do:
if ( !name ) { //pointer "name" is null... }

On Fri, Nov 10, 2017 at 1:15 AM, 舞法舞天 <278124177 at qq.com> wrote:

> hi:
>   How can i judge an smart pointer is null?
>
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