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Karen LiuIDE Lead Program ManagerMicrosoftDev 339
The Evolution of Visual Basic
Visual Basic
1.0-3.0Visual Basic
4.0-6.0
Visual Basic
7.0-9.0
Visual Basic 10.0
Visual Basic 11.0+
VB's Fraternal Twin: C#Co-Evolution
Trends
Declarative
ConcurrentDynamic
Declarative Programming
What
How
Imperative Declarative
Dynamic vs. Static
DynamicLanguages
Simple and succinct
Implicitly typed
Meta-programming
No compilation
StaticLanguages
Robust
Performant
Intelligent tools
Better scaling
Concurrency
VB 10 Language FeaturesKaren LiuVB/C# IDE Lead Program ManagerMicrosoft
What you saw
Implicit line continuation
Automatically implemented properties
Collection initializers
Array literals
Statement lambdas
Implicit Line Continuation
<Attribute()>Function Go(
ByVal x As Integer,ByVal y As Integer
)
Dim query =From n In {
123,456,}
Order By nSelect n +
x
Auto-implemented Properties
Property FirstName As String
Property LastName As String
Initializers:
Property ID As Integer = -1
Property Suppliers As New List(Of Supplier)
Collection Initializers
Dim x As New List(Of Integer) From {1, 2, 3}
Dim list As New Dictionary(Of Integer, String) From
{{1, “Bart”},
{2, “Lisa”},
{3, “Homer”}}
Array Literals:
Dim a = {1, 2, 3} 'infers Integer()
Dim b = {1, 2, 3.5} 'infers Double()
Statement Lambdas
Dim items = {1, 2, 3, 4, 5}
Array.ForEach(items, Sub(n) Console.WriteLine(n))
Array.ForEach(items, Sub(n)
If n Mod 2 = 0 Then Console.WriteLine(n)End Sub)
'Count the number of even items in the arrayDim total = items.Count(Function(n)
Return (n Mod 2 = 0)End Function)
PythonBinder
RubyBinder
COMBinder
JavaScriptBinder
ObjectBinder
.NET Dynamic Programming
Dynamic Language Runtime
Expression Trees Dynamic Dispatch Call Site Caching
IronPython IronRuby C# VB.NET Others…
VB 10 –Dynamic InteropKaren LiuIDE Lead Program ManagerMicrosoft
Interop with Dynamic Languages
'Load a file from Python into memoryDim random As Object = python.UseFile("random.py")
Dim items = {1, 2, 3, 4, 5, 6, 7}
'Dynamic (late-bound) call to Python functionrandom.shuffle(items)
'Print out the shuffled arrayArray.ForEach(items, Sub(n) Console.WriteLine(n))
Interop Type Embedding ("No Pia")
• Use PIAs at design-time, not runtime
• No need to deploy PIA to user’s machine
• Compiler embeds the specific members of the specific types used into your assembly
Compiler as a Service
CompilerCompilerSource codeSource code
SourceFile
Source codeSource code
.NET Assembly
Class
Field
public Foo
private
string
X
Meta-programming Read-Eval-Print Loop
LanguageObject Model
DSL Embedding
Compiler as a ServiceKaren LiuVB/C# IDE Lead Program ManagerMicrosoft
Summary
Declarative
ConcurrentDynamic
http://microsoft.com/technet
Resources for IT Professionals
http://microsoft.com/msdn
Resources for Developers
www.microsoft.com/learning
Microsoft Certification & Training Resources
Resources
Related Content
Dev352 (R) – Increase Your Productivity with the Visual Studio 2010 IDE
DTL339 (R) – Future Directions for Microsoft Visual Basic
Dev423 – How LINQ Works: A Deep Dive into the Microsoft Visual Basic and C# Implementations
Track Resources
VB Team Blog – http://blogs.msdn.com/vbteamBeth Massi’s Blog - http://blogs.msdn.com/bethmassi
MSDN VBasic Site – http://msdn.com/vbasic
VB 10 Whitepaper -http://code.msdn.microsoft.com/vbfuture/Release/ProjectReleases.aspx?ReleaseId=1699
VB Developer Center - http://msdn.com/vbasic
Questions? Comments? Requests? Email me at [email protected]
Complete an
evaluation on
CommNet and
enter to win!
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS,
IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.