Use LINQ to Initialize 2d Array

[dday9]

I know that I'm able to use LINQ to initialize a 1D array by doing this:

Dim foo() As Boolean = Enumerable.Range(0, 9).ToList().ConvertAll(Function(i) True).ToArray()

But is there a way that I could do the same thing for a 2D array too?

[Inferrd]

1D:

Dim foo() As Boolean = Enumerable.Repeat(True, 9).ToArray

2D:

Dim bools(3, 4) As Boolean

Buffer.BlockCopy(Enumerable.Repeat(True, bools.Length).ToArray, 0, bools, 0, bools.Length)



'   proof is in the pudding: 
Dim sb As New StringBuilder
For row As Integer = 0 To 3
    For col As Integer = 0 To 4
        sb.Append(bools(row, col)).Append(" ")
    Next
    sb.Append(vbCrLf)
Next

MsgBox(sb.ToString)

miiiight be a bit of a cheat. Check the docs for Buffer.BlockCopy and see what you think.

[dday9]

I like your 1D example much better than mine, and the 2D.... wow I would've never thought of that!

[dbasnett]

Is LINQ the best approach here? Best as in clearest, easiest to maintain, and fastest? Just wondering.

[Sitten Spynne]

It's a cool trick, but I think I'd use Enumerable.Repeat().ToArray() for 1D and good old fashioned loops for 2D. It certainly wins code golf, but might not pass a code review.