What are Erase Function in VBA?

Data Science, AI and ML
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#1

The Erase Function is used to reset the values of fixed-size arrays and free the memory of the dynamic arrays. It behaves depending upon the type of the arrays.

Syntax

Erase ArrayName
Fixed numeric array, each element in an array is reset to Zero.
Fixed string array, each element in an array is reset to Zero length " ".
Array of objects, each element in an array is reset to special value Nothing.

Example

Add a button and add the following function.

Private Sub Constant_demo_Click()
   Dim NumArray(3)
   NumArray(0) = "VBScript"
   NumArray(1) = 1.05
   NumArray(2) = 25
   NumArray(3) = #23/04/2013#
  
   Dim DynamicArray()
   ReDim DynamicArray(9)   ' Allocate storage space.
  
   Erase NumArray          ' Each element is reinitialized.
   Erase DynamicArray      ' Free memory used by array.
  
   ' All values would be erased.
   msgbox("The value at Zeroth index of NumArray is " & NumArray(0))
   msgbox("The value at First index of NumArray is " & NumArray(1))
   msgbox("The value at Second index of NumArray is " & NumArray(2))
   msgbox("The value at Third index of NumArray is " & NumArray(3))
End Sub

When you execute the above function, it produces the following output.

The value at Zeroth index of NumArray is
The value at First index of NumArray is
The value at Second index of NumArray is
The value at Third index of NumArray is