Palestra ministrada no TechEd Brasil 2011 por Giovanni Bassi. http://blog.lambda3.com.br

3. @GiovanniBassi
3

7. C# 4.0 + VB 10.0
Dinamismo + paridade nas
linguagens
C# 3.0 + VB 9.0
Language Integrated Query
C# 2.0 + VB 8.0
Generics
C# 1.0 + VB 7.0
Código gerenciado

10. C# 5.0 + VB 11.0
Programação assíncrona
C# 4.0 + VB 10.0
Dinamismo + paridade nas
linguagens
C# 3.0 + VB 9.0
Language Integrated Query
C# 2.0 + VB 8.0
Generics
C# 1.0 + VB 7.0
Código gerenciado

13. var data = DownloadData(...);
ProcessData(data);
DownloadDataAsync(... , data => {
ProcessData(data);
});

14. var data = DownloadData(...);
ProcessData(data);
DownloadDataAsync(... , data => {
ProcessData(data);
});

16. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

17. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

18. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

19. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

20. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

21. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

22. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

23. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}


24. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}


25. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}
 

26. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}
 

27. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

 

28. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

  

29. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}

   

30. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}
 
   

31. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}
  
   

32. async void DoWorkAsync() {
var t1 = ProcessFeedAsync("www.acme.com/rss");
var t2 = ProcessFeedAsync("www.xyznews.com/rss");
await Task.WhenAll(t1, t2);
DisplayMessage("Done");
} async Task ProcessFeedAsync(string url) {
var text = await DownloadFeedAsync(url);
var doc = ParseFeedIntoDoc(text);
await SaveDocAsync(doc);
ProcessLog.WriteEntry(url);
}
  
   

33. async Task<XElement> GetRssAsync(string url) {
var client = new WebClient();
var task = client.DownloadStringTaskAsync(url);
var text = await task;
var xml = XElement.Parse(text);
return xml;
}

34. async Task<XElement> GetRssAsync(string url) {
var client = new WebClient();
var task = client.DownloadStringTaskAsync(url);
var text = await task;
var xml = XElement.Parse(text);
return xml;
} Task<XElement> GetRssAsync(string url) {
var client = new WebClient();
var task = client.DownloadStringTaskAsync(url);
return task.ContinueWith(delegate
{
var text = task.Result;
var xml = XElement.Parse(text);
return xml;
});
}

36. Task<XElement> GetRssAsync(string url) {
var $builder = AsyncTaskMethodBuilder<XElement>.Create();
async Task<XElement> $state = 0;
var
TaskAwaiter<string> $a1;
GetRssAsync(string url) {
Action $resume = delegate {
var client = new try {
WebClient();
var task = if ($state == 1) goto L1;
client.DownloadStringTaskAsync(url);new WebClient();
var client =
var text = await task; task = client.DownloadStringTaskAsync(url);
var
$a1 = task.GetAwaiter();
var xml = XElement.Parse(text);
return xml; if ($a1.IsCompleted) goto L1;
} $state = 1;
$a1.OnCompleted($resume);
return;
L1: var text = $a1.GetResult();
var xml = XElement.Parse(text);
$builder.SetResult(xml);
}
catch (Exception $ex) { $builder.SetException($ex); }
};
$resume();
return $builder.Task;
}

37. Task<XElement> GetRssAsync(string url) {
var $builder = AsyncTaskMethodBuilder<XElement>.Create();
async Task<XElement> $state = 0;
var
TaskAwaiter<string> $a1;
GetRssAsync(string url) {
Action $resume = delegate {
var client = new try {
WebClient();
var task = if ($state == 1) goto L1;
client.DownloadStringTaskAsync(url);new WebClient();
var client =
var text = await task; task = client.DownloadStringTaskAsync(url);
var
$a1 = task.GetAwaiter();
var xml = XElement.Parse(text);
return xml; if ($a1.IsCompleted) goto L1;
} $state = 1;
$a1.OnCompleted($resume);
return;
L1: var text = $a1.GetResult();
var xml = XElement.Parse(text);
$builder.SetResult(xml);
}
catch (Exception $ex) { $builder.SetException($ex); }
};
$resume();
return $builder.Task;
}

38. Task<XElement> GetRssAsync(string url) {
var $builder = AsyncTaskMethodBuilder<XElement>.Create();
async Task<XElement> $state = 0;
var
TaskAwaiter<string> $a1;
GetRssAsync(string url) {
Action $resume = delegate {
var client = new try {
WebClient();
var task = if ($state == 1) goto L1;
client.DownloadStringTaskAsync(url);new WebClient();
var client =
var text = await task; task = client.DownloadStringTaskAsync(url);
var
$a1 = task.GetAwaiter();
var xml = XElement.Parse(text);
return xml; if ($a1.IsCompleted) goto L1;
} $state = 1;
$a1.OnCompleted($resume);
return;
L1: var text = $a1.GetResult();
var xml = XElement.Parse(text);
$builder.SetResult(xml);
}
catch (Exception $ex) { $builder.SetException($ex); }
};
$resume();
return $builder.Task;
}

39. Task<XElement> GetRssAsync(string url) {
var $builder = AsyncTaskMethodBuilder<XElement>.Create();
async Task<XElement> $state = 0;
var
TaskAwaiter<string> $a1;
GetRssAsync(string url) {
Action $resume = delegate {
var client = new try {
WebClient();
var task = if ($state == 1) goto L1;
client.DownloadStringTaskAsync(url);new WebClient();
var client =
var text = await task; task = client.DownloadStringTaskAsync(url);
var
$a1 = task.GetAwaiter();
var xml = XElement.Parse(text);
return xml; if ($a1.IsCompleted) goto L1;
} $state = 1;
$a1.OnCompleted($resume);
return;
L1: var text = $a1.GetResult();
var xml = XElement.Parse(text);
$builder.SetResult(xml);
}
catch (Exception $ex) { $builder.SetException($ex); }
};
$resume();
return $builder.Task;
}

44. var feeds = (from url in urls select client.DownloadFeed(url)).ToArray();
var feeds = await Task.WhenAll(from url in urls select client.DownloadFeedAsync(url));
Sem novas threads!

46. try {
string[] videoUrls = await ScrapeYoutubeAsync(url); // Rede
Task<Video> t1 = DownloadVideoAsync(videoUrls[0]); // Baixe 2 videos
Task<Video> t2 = DownloadVideoAsync(videoUrls[1]);
Video[] vids = await Task.WhenAll(t1, t2); // Espere os 2
Video v = await MashupVideosAsync(vids[0], vids[1]); // CPU
await v.SaveAsync(textbox.Text); // Entrada/Saída
}
catch (WebException ex) {
ReportError(ex);
}

47. 


48. 


51. public static class Trace
{
public static void WriteLine(string message,
[CallerFilePath] string file = "",
[CallerLineNumber] int line = 0,
[CallerMemberName] string member = "")
{
var s = string.Format("{0}:{1} – {2}: {3}",
file, line, member, message);
Console.WriteLine(s);
}
}
Trace.WriteLine("Starting services");
Trace.WriteLine("Starting services",
"c:sourcesfoo.cs", 1123, "Initialize");

52. public static class Trace
{
public static void WriteLine(string message,
[CallerFilePath] string file = "",
[CallerLineNumber] int line = 0,
[CallerMemberName] string member = "")
{
var s = string.Format("{0}:{1} – {2}: {3}",
file, line, member, message);
Console.WriteLine(s);
}
}
Trace.WriteLine("Starting services");
Trace.WriteLine("Starting services",
"c:sourcesfoo.cs", 1123, "Initialize");

53. C# 5.0 + VB 11.0
Programação assíncrona
C# 4.0 + VB 10.0
Dinamismo + paridade nas
linguagens
C# 3.0 + VB 9.0
Language Integrated Query
C# 2.0 + VB 8.0
Generics
C# 1.0 + VB 7.0
Código gerenciado

54. Class
Meta-programação Read-Eval-Print Loop (REPL)
public Foo
Modelo de objetos Field Incorporação de DSLs
da linguagem
private X
string
Código Assembly
Source
Fonte Source
.NET
Source
code Compilador Source
code
code code

55. Language
Service
Compiler
APIs
Compiler
Pipeline Metadata
Import

58. http://msdn.com/vstudio/async

59. o 30/Set 17:20, com Fabio Galuppo
o 30/Set 10:10, com Rodrigo Vidal
o 29/Set 17:10, com Victor Cavalcante e Giovanni Bassi

60. Get the free mobile app for your phone
http:/ / gettag.mobi
http://technet.microsoft.com/pt-br
Get the free mobile app for your phone
http:/ / gettag.mobi
http://msdn.microsoft.com/pt-br

61. Não esqueça de
preencher sua avaliação
online
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