logic:
- Method return int array with r and c
- create
static class to make a Select method
- Select method input the int array and call
Func<int[],T> and retrun T (T is Generic)
Online Test Demo Link
public class Program
{
public static void Main()
{
var result = Method(1, 2).Select( (r,c) => new { r,c });
Console.WriteLine(result);
}
static int[] Method(int r,int c) => new[] {r,c};
}
public static class LinqExtension
{
public static T Select<T>(this int[] ints, Func<int,int, T> func) => func(ints[0],ints[1]);
}
or you can use Method with params int[]
public class Program
{
public static void Main()
{
var value = Method(1, 2).Select((int[] arr) => new{r = arr[0],c = arr[1]});
Console.WriteLine(value); //result : { r = 1, c = 2 }
}
public static int[] Method(params int[] ints)
{
return ints;
}
}
public static class LinqExtension
{
public static T Select<T>(this int[] ints,Func<int[],T> func){
return func(ints);
}
}
new question :
How would I use in out keywords in this context? Assuming I'm using parameters passed by value from Foo().
you can use out keyword :
public class Program
{
public static void Main()
{
Method(1, 2).Select( out int r ,out int c);
Console.WriteLine(r);
Console.WriteLine(c);
}
static int[] Method(int r,int c) => new[] {r,c};
}
public static class LinqExtension
{
public static void Select(this int[] ints, out int r, out int c)
{
r = ints[0];
c = ints[1];
}
}
