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Novidades do .NET Framework 4e C# 4.0
“Keep it simple”
Quem sou?
• Felipe Pimentel• MCP, MCTS e MCPD• Sócio e fundador da Ificomm Tecnologia • Arquiteto e consultor.• Líder do DotNetArchitects PE
Contatos
• Twitter: http://twitter.com/felipe_pimentel• Email: felipe.pimentel@ificomm.com• Blog: http://blog.ificomm.com• Grupo: http://pe.dotnetarchitects.net
Novidades não faltam
• ASP.NET WebForm• ASP.NET MVC• Mudanças na CLR, C# e VB • Data Access• Serviços • WorkFlows• WPF• MEF• ...
Agenda
• Code Contract• MEF – Managed Extensibily Framework• DLR – Dynamic Language Runtime• Parallel Extension• Principais novidades no C# 4.0
A Look Back…
.NET 1.0.NET 1.0 .NET 1.1.NET 1.1 .NET 2.0.NET 2.0
3.03.03.53.5
.NET 4.NET 4
2002 2003 2008 CTP2005-08
CLR 1.0CLR 1.0 CLR 1.1CLR 1.1 CLR 2.0CLR 2.0 CLR 4CLR 4
SP1SP1
The .NET Framework
Base Class LibrariesBase Class Libraries
The CLRJIT & NGENJIT & NGEN
Garbage CollectorGarbage Collector
Security Model
Security Model
Exception HandlingException Handling
Loader & Binder
Loader & Binder
WPFWPF Win FormsWin
Forms DLRDLR ASP.NET
ASP.NET WCFWCF And
more!And
more!LINQLINQ
Code Contract
• O que é garantido? (Pré-condição)• O que é esperado? (Pós-condição)• O que muda? (Invariante)
Code Contract
Code Contract
Managed Extensibility Framework?
Framework de extensibilidade – para criação de um sistema de plugins. Plugins que podem ser usados em qualquer aplicação.
The Problem…
Original SoftwareDevelopment
SoftwareMaintenance
Open/Closed Principle
Aberto para extensões e fechados para modificações.
Dinamicamente composta ao invés de ser estaticamente compilada
The Parallel Computing Initiative
Resolvendo problemas de maneira concorrente
“Concurrency for the masses”
Parallel Computing with .NET 4
1. Task Parallel Library (TPL)
2. Parallel LINQ (PLINQ)
3. Coordination Data Structures (CDS)
4. System.Threading Improvements
Parallel LINQ
Parallel LINQ (PLINQ) enables developers to easily leverage manycore with a minimal impact to existing LINQ programming model
var q = from p in people where p.Name == queryInfo.Name && p.State == queryInfo.State && p.Year >= yearStart && p.Year <= yearEnd orderby p.Year ascending select p;
var q = from p in people where p.Name == queryInfo.Name && p.State == queryInfo.State && p.Year >= yearStart && p.Year <= yearEnd orderby p.Year ascending select p;
Parallel Static Class
Parallel Static Class
Threading Task
Why the DLR?
Common Language RuntimeCommon Language Runtime
Statically-Typed
C#C#VBVB
RubyRubyPythonPython
Dynamically-Typed
Why the DLR?
Common Language RuntimeCommon Language Runtime
Statically-Typed
C#C#VBVB
RubyRubyPythonPython
Dynamically-Typed
Dynamic Language RuntimeDynamic Language Runtime
.NET Dynamic Programming
PythonBinderPythonBinder
RubyBinderRuby
BinderCOM
BinderCOM
BinderJScriptBinderJScriptBinder
ObjectBinderObjectBinder
Dynamic Language RuntimeDynamic Language Runtime
Expression TreesExpression TreesExpression TreesExpression Trees Dynamic DispatchDynamic DispatchDynamic DispatchDynamic Dispatch Call Site CachingCall Site CachingCall Site CachingCall Site Caching
IronPythonIronPython IronRubyIronRuby C#C# VB.NETVB.NET Others…Others…
Dynamically Typed Objects
Calculator calc = GetCalculator();int sum = calc.Add(10, 20);Calculator calc = GetCalculator();int sum = calc.Add(10, 20);
object calc = GetCalculator();Type calcType = calc.GetType();object res = calcType.InvokeMember("Add", BindingFlags.InvokeMethod, null, new object[] { 10, 20 });int sum = Convert.ToInt32(res);
object calc = GetCalculator();Type calcType = calc.GetType();object res = calcType.InvokeMember("Add", BindingFlags.InvokeMethod, null, new object[] { 10, 20 });int sum = Convert.ToInt32(res);
ScriptObject calc = GetCalculator();object res = calc.Invoke("Add", 10, 20);int sum = Convert.ToInt32(res);
ScriptObject calc = GetCalculator();object res = calc.Invoke("Add", 10, 20);int sum = Convert.ToInt32(res);
dynamic calc = GetCalculator();int sum = calc.Add(10, 20);
dynamic calc = GetCalculator();int sum = calc.Add(10, 20);
Statically typed to be dynamic
Statically typed to be dynamic
Dynamic method invocation
Dynamic method invocation
Dynamic conversion
Dynamic conversion
.NET Framework Compatibility
.NET Framework Compatibility
• .NET 4.0 is a highly compatible release• .NET 4.0 does not auto–roll forward
– You must add a configuration file with a specific switch to get 3.5 apps to run on 4.0
.NET Framework Compatibility
Hang on… if 4.0 is compatible, why not run 3.5 apps automatically on 4.0?–The BEST thing is always to prefer running on the version of the framework you built against
• Contact netfxcf@microsoft.com and submit your app for testing!
CLR 2 - Existing Side-By-Side
Host Process (i.e. Outlook)Host Process (i.e. Outlook)
.NET 2.0.NET 2.0
2.0 add-in
2.0 add-in
3.03.0
3.53.5
3.0 add-in
3.0 add-in
3.5 add-in
3.5 add-in
1.1 add-in
1.1 add-in
.NET 1.1.NET 1.1
CLR 4 - In-Process Side-By-Side
.NET 2.0.NET 2.0.NET 4.0.NET 4.0
2.0 add-in
2.0 add-in
3.03.0
3.53.5
Host Process (i.e. Outlook)Host Process (i.e. Outlook)
3.0 add-in
3.0 add-in
3.5 add-in
3.5 add-in
4.0 add-in
4.0 add-in
NOVIDADES DO C# 4.0
The Evolution of C#
C# 1.0C# 1.0
C# 2.0C# 2.0
C# 3.0C# 3.0
Managed Code
Generics
LINQ
C# 4.0C# 4.0
Dynamic
New C# 4.0 Features
1. Named and Optional Parameters
New C# 4.0 Features
• Covariance and Contravariance
Covariance
Contravariance
Dinamismo em C#
Tipo dynamic
• Resolução dinâmica de métodos, propriedades e eventos (em tempo de execução)
• Não efetua validação estática
ExpandoObject
• Permite criar novos objetos em tempo de execução
DynamicObject
• Facilita criação de classes dinâmicas
Contatos
• Twitter: http://twitter.com/felipe_pimentel• Email: felipe.pimentel@ificomm.com• Blog: http://blog.ificomm.com• Grupo: http://pe.dotnetarchitects.net
Dúvidas?
Obrigado!!!
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