I would like to know as I'm quite experienced with GOOP (Sybio & NI-GOOP), but this G# seems to be new to me... If there is any document which compares these two by-reference model, it would be great.
I don't think it exists any document, but I can say that both GOOP4 and G# are both completely LabVIEW based, both are based upon LabVIEW classes with a DVR to an cluster to implement reference based OO. Since I have a background developing both GOOP2 and partly GOOP3, the intension with G# is that is should be very similar to GOOP, but take advantage of the new features that was introduced in LV2009. You can say that referenced based GOOP splitted into two paths after GOOP3, one branch is G#, the other is GOOP4. GOOP3 was originally developed by Endevo which is both my and GOOP4 creator Mikael H former employer. But when Endevo was sold to Symbio, we went separate ways.
There are a few differences:
But you ask this question in a G# forum and since I am the creator of G#, I may not be totally objective, but since GOOP4 is nowdays owned by NI, and I do think GOOP4 creator Mikael H is still active in the development and he is one of the most skilled LabVIEW developers in the world, you can be very sure that GOOP4 will continue to live and be supported as well. Whatever choice you make, you get some well tested and well used object-oriented code. Actually G# and GOOP4 can coexist in the same project, but can not inherit from each other.
To put it very short, GOOP functions similar to C++, G# similar to C# (by design).
Or as a pun, we're sharp and they're goop.
Seriously though, the G# concept has a slight overhead due to garbage collection (generally negligable) and allows some very nice general solutions due to all objects inheriting G#Object.
That looks clean Mattias_Ericsson...
Kudos to @Yamaeda's fun mixed answer...
I see that G# is free now and I knew Symbio was paid one... In such case, is this G# will be chargable anytime?
Also, as GOOP merged with NI, any plans G# will also do?
G# is free, NI GDS and OpenGDS are both free. It comes down to your taste and what you expect from your tools.
G# has always been, and shall continue to be, free. That's one of the reasons why it's Open Source. It's also a way to spread our name and show what we can do. G# is a tool we use ourselves, some more than others (depending on projects).
If NI plans to buy us they sure hasn't told us yet.