[user92]

Hello!

I appreciate any direct help with the topic below ... or a reference/guide/video which explains the full story for beginners
________________________________________________
my understanding of constructors in C++ is the following:

Class name (parameter list)
:
Member initializer list
{statement}

I tried to match with OpenFOAM using Lines 37 to 47 below from the code here

-------------------------------------------------
Foam:: prghPressureFvPatchScalarField::
prghPressureFvPatchScalarField
(
const fvPatch& p,
const DimensionedField<scalar, volMesh>& iF
)
:
fixedValueFvPatchScalarField(p, iF),
rhoName_("rho"),
p_(p.size(), Zero)
{}

-------------------------------------------------

My guess (please correct me if I'm wrong)
- Class name is prghPressureFvPatchScalarField

- fvPatch and DimensionedField<scalar, volMesh> are parameters and they were given aliases p and iF

my questions
- what is fixedValueFvPatchScalarField(p, iF)

- {} is empty, I'm not sure what the constructor is doing overall

- what is the first line Foam::X::X (I've seen this frequently in different codes)

Thank you