C# function by passing parameters

Question

Calculate ac# function by passing parameters

My function is something like this:

Result<double> Evaluate(string var, Result<double> height, Result<double> perm)

Var can be anything user wants to enter. For example, if the user enters Depth, then the calculation would be like height * perm and return the var. If user enters SC the calculation is height/ perm and result is stored in var and returns the result

I tried something like this:

List<double> calvar = new List<double>
Switch(var){
    Case “depth”:
        calvar = height * perm
        return calvar
}

I got an error saying * cannot be used for operators of type

Answer 1

You got this error, because you're trying to multiply to objects of the type Result and not the double values itself. If you want to use the * operator for objects of the type Result you have to overload the * operator in your class.

public class Result<T>
{
  public T Value { get; set; }

  public static Result<T> operator * (Result<T> a, Result<T> b)
  {
    // Multiply Logic
  }
}