Question

Basically I have a part of my program (it’s for Vector solving) that is supposed to take data from two lists (listVectorMagnitude and listVectorAngle), and then run them through a function
in a separate class (vectorXComponent), and then return the value. How exactly would I go about taking the first value in listVectorMagnitude, the first value in listVectorAngle, and then use them as parameters in the vectorXComponent function? It would iterate over this process for as many values are in the lists. Thank you.

Answer 1

You didn’t give a lot of detail. I’ll assume that you have an instance of a class Bar named bar, and that class has a method named vectorXComponent. Additionally, I assume that the return type of Bar.vectorXComponent is Foo.

The modern functional way:

var xComponents = listVectorMagnitude.Zip(
                      listVectorAngle,
                      (x, y) => bar.vectorXComponent(x, y)
                  );

Or, an old-fashioned for loop:

List<Foo> xComponents = new List<Foo>();
for(int i = 0; i < listVectorMagnitude.Count; i++) {
    xComponents.Add(bar.vectorXComponent(
        listVectorMagnitude[i],
        listVectorAngle[i])
    );
}