No. You could of course write a wrapper class that represents a slice, and has an indexer internally – but nothing inbuilt. The other approach would be to write a method that makes a copy of a slice and hands back a vector – it depends whether you want a copy or not.
using System;
static class ArraySliceExt
{
public static ArraySlice2D<T> Slice<T>(this T[,] arr, int firstDimension)
{
return new ArraySlice2D<T>(arr, firstDimension);
}
}
class ArraySlice2D<T>
{
private readonly T[,] arr;
private readonly int firstDimension;
private readonly int length;
public int Length { get { return length; } }
public ArraySlice2D(T[,] arr, int firstDimension)
{
this.arr = arr;
this.firstDimension = firstDimension;
this.length = arr.GetUpperBound(1) + 1;
}
public T this[int index]
{
get { return arr[firstDimension, index]; }
set { arr[firstDimension, index] = value; }
}
}
public static class Program
{
static void Main()
{
double[,] d = new double[,] { { 1, 2, 3, 4, 5 }, { 5, 4, 3, 2, 1 } };
var slice = d.Slice(0);
for (int i = 0; i < slice.Length; i++)
{
Console.WriteLine(slice[i]);
}
}
}