Hi everbody,
I have two questions regarding the use of the Pass-by-Reference option for the Inputs in an EventDispatcher :
- I am not quite sure to fully understand what it is used or useful for ?
For example, I have an EventDispatcher with the following inputs :
Given that my Object input’s type is already an Object Reference (what I picked from the drop-down list), what would be the difference if I would enable the Pass-by-Reference option then ?
- Furthermore, I did try with and without this option to see if there was any noticeable difference, and yes there is. If I enable the
Pass-by-ReferenceI get a warning which reads :
No value will be returned by reference. Parameter 'Object'.
But even though it says that “no value will returned by reference”, on the receiving end of my EventDispatcher I can definitely retrieve the reference and cast it to whatever I need to. It works perfectly fine and in a completely similar manner whether or not the Pass-by-Reference is enabled and regardless of the warning.
Questions)
1 : In which situation and why would I want to Pass-by-Reference something that is already a reference ?
2 : What does this warning mean ? There’s definitely a value which is returned since I can use/test/cast the reference whether the Pass-by-Reference option is used or not.
I want to emphasize I did my fair share of research on the matter, but all the informations seem to be clashing between one another. Some say it’s a long time bug, some say it’s a normal warning, some say this warning doesn’t make sense, … . So it is really hard for me to wrap my head around this option and fully understand what it does and if I could actually need it.
Thanks a lot in advance !!