Using Enumerable to initialize an array of arrays with the same value in C#

Question

Im new in C# I just want to know if it's possible to initialize an array of arrays with the same value using Enumerable, what I'm trying to do is something like this:

Enumerable.Range(1, 8).Select(i => {-1, -1}).ToArray();

or using Repeat

Enumerable.Repeat({ -1, -1}, 8).ToArray();

My desired output would be an array with this shape and values:

{{-1, -1}, {-1, -1}, {-1, -1}, {-1, -1}, {-1, -1}, {-1, -1}, {-1, -1}, {-1, -1} };

Can this be achieved using Enumerable?
Is there any other "short" way to do this?

Thanks for your help.

Peter Duniho · Accepted Answer · 2019-10-16 06:35:18Z

5

IMHO, Repeat() is a better choice. Again, you were close:

Enumerable.Repeat(new[] { -1, -1 }, 8).ToArray();

You only can omit the new[] with initializers (e.g. when declaring a variable).

answered Oct 16, 2019 at 6:35

Peter Duniho

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Michael Sander · Accepted Answer · 2019-10-16 07:32:05Z

4

You almost had it with your first aproach, try

Enumerable.Range(1, 8).Select(i => new [] { -1, -1 }).ToArray();

edited Oct 16, 2019 at 7:32

answered Oct 16, 2019 at 6:27

Michael Sander

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