Arrays.FirstRowIndex
From Xojo Documentation
Method
Returns the index of the first row of the array.
Usage
result = array.FirstRowIndex
| Part | Type | Description |
|---|---|---|
| result | Integer | The index of the first element in the array specified.
If the passed array has no elements, result is set to -1. |
| array | Array of any data type | The array whose last element number you want. |
Notes
The FirstRowIndex function is used to determine the first element of an array. This is especially useful for writing code that loops through arrays so that you don't have to be aware of whether an array begins at 0 or 1 (they all begin at 0).
Arrays can have a maximum index value of 2,147,483,646.
Sample Code
This code loops through an array and replaces each occurrence of X in an array with Y.
For i As Integer = names.FirstRowIndex To names.LastRowIndex
If names(i) = "X" Then
names(i) = "Y"
End If
Next
If names(i) = "X" Then
names(i) = "Y"
End If
Next
See Also
Var statement; Arrays concept, ParamArray keyword, Arrays.LastRowIndex method