codeStreamDict1

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v1906                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      testDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

// values from outer-scope
begIter     0;
endIter     200;

writeInterval   #codeStream
{
    // values from inner-scope
    nDumps      5;

    codeInclude
    #{
        #include "fvCFD.H"
    #};

    codeOptions
    #{
        -I$(LIB_SRC)/finiteVolume/lnInclude \
        -I$(LIB_SRC)/meshTools/lnInclude
    #};

    localCode
    #{
        static int someCode()
        {
            Info<<"called someCode\n";
            return 10;
        }
    #};

    code
    #{
        label interval = ($endIter - $begIter);
        // label nDumps = $nDumps;
        label nDumps = someCode();
        os  << (interval / nDumps);
    #};
};

// play with cleanup
#remove begIter

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //