Android Question Bidimensional array lengths

riclp

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Hi to all.
I want to get the two lengths of a bidimensional array.
As for example:

Dim mat(10, 5) As Float
Log(mat.Length)

It returns 10.
And if I want to get the 2nd dimension length:

Dim mat(10, 5) As Float
Log(mat(0).Length)

Return error: "Invalid number of indices"
I thought bidimensional arrays are arrays of arrays and you can get the 2nd dimension by getting an individual sub-array length.

Has anybody any suggestion without resorting to create a specific Type to store the two lengths and the array?

Thanx.
 

riclp

New Member
Licensed User
Longtime User
Yes, it works, even when the bidimensional matrix is of Float type.
B4X:
Sub cols(mat(,) As Float) As Int
    Dim r As Reflector
    r.Target = mat
    Dim arr1() As Float = r.GetArray(Array As Int(0))
    Return arr1.Length
End Sub
But I´m not sure about the way "GetArray" works in this case.
Is it that it returns the first "sub-array" in the bidimensional matrix by getting the first object referenced by an Int array whose first value is "0"? May asume is this the way it works?
Thank you
 
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