optional array problem

12 Oct 2005 10:06 PM

Still Learning

Hi,

The following syntax works when used within a subroutine but not when
declaring an optional parameter in a sub definition:

Within sub:

Dim arr(,) as integer = {{0}, {0}}

Declaration:

Private Sub TempName(byval field1 as string, optional byval arr(,) as
integer = {{0}, {0}} )

The Sub Declaration put a squiggly mark under the first { and states
"expression expected". I've tried different variations and searched books and
the web to no avail. Is this a bug or am I using incorrect syntax?

Thanks!
NJ

13 Oct 2005 12:33 AM

David Anton

The default value for an optional parameter must be constant. An array is
not considered a constant.

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David Anton
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Show quote

"Still Learning" wrote:

> Hi,
>
> The following syntax works when used within a subroutine but not when
> declaring an optional parameter in a sub definition:
>
> Within sub:
>
> Dim arr(,) as integer = {{0}, {0}}
>
> Declaration:
>
> Private Sub TempName(byval field1 as string, optional byval arr(,) as
> integer = {{0}, {0}} )
>
> The Sub Declaration put a squiggly mark under the first { and states
> "expression expected". I've tried different variations and searched books and
> the web to no avail. Is this a bug or am I using incorrect syntax?
>
> Thanks!
> NJ