ReDim
行用ReDim重新宣告,可以改變原本陣列的上下限:
Dim A(0)
as Integer
ReDim A(1 to 3, 1 to 3)
as Integer
原本陣列:
A(0) |
擴充後的陣列:
A(1, 1) | A(2, 1) | A(3, 1) |
A(1, 2) | A(2, 2) | A(3, 2) |
A(1, 3) | A(2, 3) | A(3, 3) |
但是擴充陣列後原本的資料會流失,如果要避免的話,就要加上Preserve,即是:
Dim A(0)
as Integer
ReDim Preserve A(2, 2)
as Integer
那麼原本陣列的內容就得以保存下來了!