How to get sub array without cloning

Question

I know in C# we can always get the sub-array of a given array by using Array.Copy() method. However, this will consume more memory and processing time which is

Answer 1

You might be interested in ArraySegments or unsafe.

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ArraySegments delimits a section of a one-dimensional array.

Check ArraySegments in action

ArraySegments usage example:

 int[] array = { 10, 20, 30 };

 ArraySegment segment = new ArraySegment(array, 1, 2);
 // The segment contains offset = 1, count = 2 and range = { 20, 30 }

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Unsafe define an unsafe context in which pointers can be used.

Unsafe usage example:

    int[] a = { 4, 5, 6, 7, 8 };

    unsafe
    {
        fixed (int* c = a)
        {
            // use the pointer
        }
    }