excel vba: Special Types - Functions as Arguments of Functions

Question

There is no special type for functions in VBA. It is hard for me to see how to add functions as arguments to functions in Excel VBA.

What I am trying to accomplish i

Answer 1

Since VBA has it's roots in an interactive language, it has always had the ability to execute text:

function f(g as string, x as string) as string
        f = application.run(g,x)
end function

MyStringA = f("functionA",string1)
MyStringB = f("functionB",string1)

Edit to Add: I think that in current versions of Excel, the application (Excel) can 'run' only things you can show in a spreadsheet cell. So that means functions, not subroutines. To execute a subroutine, wrap it up in a function wrapper:

function functionA(x as string)
    Call MySubA(x)
end function