[rsa]

Hi,

lets say I have a file called "myProproperties" in the constant directory of my case file where the file has an entry like:

myProp
{
myVariable [0 1 0 0 0 0 0] 1;
}

now, in the solver (for simplicity lets say myIcoFoam) I should add the following:

IOdictionary myProperties
(
IOobject
(
"myProperties",
runTime.constant(),
mesh,
IOobject::MUST_READ_IF_MODIFIED,
IOobject::NO_WRITE
)
);
const dictionary& myVariable(myProperties.subDict("myProp"))
dimensionedScalar myVar
(
"myVar",
dimLength,
myVariable.lookup("myVar")
);
So, when I do it like that, I am declaring the variable myVar and initialize it directly.

Now lets say I just want to declare my variables and initialize it later. I looked into the "dimensionedType.C" which I assume is the template class for dimensionedScalar and I found the following constructor:
dimensioned (const word &, const dimensioned< Type > &)

so I declared my variable as:
myVar("myVar", dimLength)

up to here everything was OK but then I needed to initialize the variable and the problem appeared here!!! Firstly, I could not find a member function which can initialize the variable just created!
Looking at the member function of the class it suggest there is a function called "lookupOrAddToDict" but whatever I tried did not worked!

so basically I am wondering how one can keep the initialization of the variable separate from declaration.

Thank you.

[alexeym]

Hi,

What is wrong with value method (https://cpp.openfoam.org/v5/classFoa...ba781bfdf927)?

I.e. you do something like:

myVar.value() = 10;

Or you would like to initialise variable with a value from dictionary?

[rsa]

Hi Alexey,

the value() function as it is stated, returns a reference (const or non-const) to value but in my case I want to initialize it with the value aviable in the dictionary (the value 1 in "myProperties" [0 1 0 0 0 0 0] 1).

[alexeym]

Hi,

You can assign through non-const reference.

There is read method (https://cpp.openfoam.org/v5/classFoa...a32b6551dc7847), if you would like to read value from dictionary. I.e.

myVar.read(myProperties)

Though name of myVar should be the same as in dictionary (in your examples, myVar has name myVar, in dictionary it is called myVariable).