Visual Basic 9.0 Language Specification Released (Beth Massi)

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# Techy News Blog » Blog Archive » Visual Basic 9.0 Language Specification Released (Beth Massi) said on October 19, 2007 11:28 AM:

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# Eduardo Dias said on October 19, 2007 12:46 PM:

Finally we will have the ternary operator in Visual Basic

# Walter Stiers - Academic Relations Team (BeLux) said on October 19, 2007 2:53 PM:

The The Visual Basic Team tells us " Visual Basic 9.0 Language Specification Released ". The Beta 2 version

# 随风流月 said on October 21, 2007 6:56 AM:

Visual Basic 9 Beta 2 语言规范 已经被在微软的下载中心发布了。这个语言规范和将与 Visual Studio 2008 一同到来的 Visual Basic 版本保持一致。尽管它将在最终的发布中被再次更改，但是 VB 团队仍然希望现在就将它提供给社区。

# Gil Shalit said on October 21, 2007 9:59 AM:

So will there not be automatic properties in VB9?

Why oh why?

# Josh Stodola said on October 22, 2007 11:19 AM:

The page numbers are way off and I don't see anything about ternary operators in there.

What's up with that?!  Are you teasing me?

# Travis Dillon said on October 22, 2007 1:15 PM:

@Josh  -  The "ternary" operator is in section 11.22 Conditional Expressions.

# Sven Devriese said on October 23, 2007 3:59 AM:

Hello, thanks for this information. I was hoping for anonymous methods (or is it "anonymous delegates" ?) like C# has had for years now.

Not bringing this to VB means it remains awkward

to do multi-threading in VB, IMHO.

Or am I missing something ?

# Anthony D. Green, MCPD said on October 23, 2007 5:51 PM:

Sven,

Yes, the absence of anonymous methods (not delegates) in VB does make multithreading more cumbersome than C# depending on how you lay out your application to use threading. If you structure your application to make use of the asynchronous event model (e.g. the BackgroundWorker component) with Service/Command/Method objects this is less of a hassle. It all depends on how robust your domain layer is and the degree to which your UI must deal with things outside of pure presentation/interaction.

To be honest, even if VB had anonymous methods I would still prefer this design. Anonymous delegates are more useful for mappings and Extension methods on collection types and such.

As an aside I find the anonymous method syntax less useful than expected in UI/threading scenarios due to the fact that, as I mentioned, C# supports anonymous METHODS, not anonymous delegates. Because the signature of Control.Invoke takes a System.Delegate no delegate type inference can be made and a concrete delegate type must still be specified. This takes away from the brevity and value of the capability. I suppose with lambdas and closures this could be minimized though once again I still prefer a smart domain layer to a busy UI…

# Josh Stodola said on October 24, 2007 9:58 AM:

Thanks Travis!!  I guess I shoulda expected the page numbers to be inaccurate, considering this is still beta.

Just checked it out and the ternary operators could not have been designed any better.  Twas exactly what I had anticipated.

Thanks again!

# 猿頁 said on January 21, 2008 12:41 PM:

米国MicrosoftでVB作ってるチームが、The Visual Basic Teamって社員b...