Syntax:
Option Base [0|1]
-or-
Option Compare [Binary | Text]
-or-
Option Explicit
-or-
Option Private Module
Group: Declaration
Description:
Form 1: Set the default base index for array declarations. Affects Dim,
Static, Private,
Public and ReDim.
Does not affect Array,
ParamArray or arrays declare in a Type.
Option Base 0 is the default.
Form 2: Set the default comparison mode for string.
• Option Compare Binary - compare string text using binary data (default)
• Option Compare Text - compare string text using the collation rules
String comparison using <, <=, =, >, >=, <>, Like
and StrComp are
affected by this mode's setting.
Form 3: Require all variables to be declared prior to use. Variables are
declared using Dim, Private, Public,
Static or as a parameter of
Sub, Function
or Property blocks.
Form 4: Public symbols defined by the module are only accessible from the
same project.
Example:
Option Base 1
Option Explicit
Sub
Main
Dim A
Dim C(2) '
same as Dim C(1 To 2)
Dim D(0 To
2)
A = 1
B = 2 ' B has not been declared
End Sub