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authorchriszimmerman <cjay.zimmerman@gmail.com>2016-10-11 03:33:17 -0400
committerven <vendethiel@hotmail.fr>2016-10-11 09:33:17 +0200
commit7b96973204f7309b5a42be10e4e24a0bb005ba85 (patch)
tree77f9dc6e63b4ce37017d3dba10d0045ba192c901 /csharp.html.markdown
parentc8fa53ca1fcb9445bd136390c8016bba879eaa92 (diff)
Csharp parallel (#2443)
* [csharp/en] - Attempts to address issue #1064 by using a different parallel example.
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1 files changed, 12 insertions, 18 deletions
diff --git a/csharp.html.markdown b/csharp.html.markdown
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+++ b/csharp.html.markdown
@@ -547,28 +547,22 @@ on a new line! ""Wow!"", the masses cried";
// PARALLEL FRAMEWORK
// http://blogs.msdn.com/b/csharpfaq/archive/2010/06/01/parallel-programming-in-net-framework-4-getting-started.aspx
- var websites = new string[] {
- "http://www.google.com", "http://www.reddit.com",
- "http://www.shaunmccarthy.com"
- };
- var responses = new Dictionary<string, string>();
- // Will spin up separate threads for each request, and join on them
- // before going to the next step!
- Parallel.ForEach(websites,
- new ParallelOptions() {MaxDegreeOfParallelism = 3}, // max of 3 threads
- website =>
- {
- // Do something that takes a long time on the file
- using (var r = WebRequest.Create(new Uri(website)).GetResponse())
+ var words = new List<string> {"dog", "cat", "horse", "pony"};
+
+ Parallel.ForEach(words,
+ new ParallelOptions() { MaxDegreeOfParallelism = 4 },
+ word =>
{
- responses[website] = r.ContentType;
+ Console.WriteLine(word);
}
- });
+ );
- // This won't happen till after all requests have been completed
- foreach (var key in responses.Keys)
- Console.WriteLine("{0}:{1}", key, responses[key]);
+ //Running this will produce different outputs
+ //since each thread finishes at different times.
+ //Some example outputs are:
+ //cat dog horse pony
+ //dog horse pony cat
// DYNAMIC OBJECTS (great for working with other languages)
dynamic student = new ExpandoObject();