I cant find the implementation of SplitCHWRes in the source code

[snowbugxs]

For the split C-H equation, SplitCHWRes is designed to calculate the term of (M∇u,∇ψ).
I find the implementation of this class is missing in the souce file, located at /moose/modules/phase_field/src/kernels/SplitCHWRes.C.
Also, it's unusual the implementation of the base class SplitCHWResBase is not in the .C file but in the .h file.

[GiudGiud]

Hello

The implementation of the template is in the header because that's what is commonly done in C++ when you want to define a template that others may instantiate with types you did not foresee could be used in the template.

Guillaume

[snowbugxs]

Thanks. Sorry for I may cause a misunderstanding here.
Both files SplitCHWRes.C and SplitCHWRes.h don't include the implementation of how to calculate residuals.
Please check the two files.

[GiudGiud]

it is implemented in SplitCHWResBase.h

[snowbugxs]

Get it. Derived class inherits the methods defined in Base class.