EagerVsLazyEvaluation.cs

public static int DoSomething(int x, int y)
{
    if (x > 0)
        return x;

    return y;
}

public static int DoSomethingLazily(Func<int> x, Func<int> y)
{
    var xValue = x();
            
    if (xValue > 0)
        return xValue;

    return y();
}