You’ve discarded it in here. ParallelLoopResult result = Parallel.ForEach(words, word => AddB(word)); You probably want something like, ParallelLoopResult result = Parallel.ForEach(words, word => { string result = AddB(word); // do something with result }); If you want some sort of collection at the end of this, consider using one of the collections under System.Collections.Concurrent, like … Read more
The following query will get the count and page results in one trip to the database, but if you check the SQL in LINQPad, you’ll see that it’s not very pretty. I can only imagine what it would look like for a more complex query. var query = ctx.People.Where (p => p.Name.StartsWith(“A”)); var page = … Read more
The easiest way to get a new list would be: List<long> unique = longs.Distinct().ToList(); Is that good enough for you, or do you need to mutate the existing list? The latter is significantly more long-winded. Note that Distinct() isn’t guaranteed to preserve the original order, but in the current implementation it will – and that’s … Read more
You can use the OutputCacheAttribute to control server and/or browser caching for specific actions or all actions in a controller. Disable for all actions in a controller [OutputCacheAttribute(VaryByParam = “*”, Duration = 0, NoStore = true)] // will be applied to all actions in MyController, unless those actions override with their own decoration public class … Read more
What is really strange is that the value you put for the optional parameter in the interface actually makes a difference. I suppose you have to question whether the value is an interface detail or an implementation detail. I would have said the latter but things behave like the former. The following code outputs 1 … Read more
If you’re just starting out, jump straight into WPF. It will allow you to get starting making rich interfaces using mark-up to define your interface without teaching you the possible bad habits (for WPF) that you’d learn from Windows Forms.
Just use the null coalescing operator and an instance of empty List<string> public void Process(string param1, List<string> param2 = null) { param2 = param2 ?? new List<string>(); // or starting with C# 8 param2 ??= new List<string>(); } The problem with this is that if “param2” is null and you assign a new reference then … Read more
The example will be, for Linux: 1) Create a C file, libtest.c with this content: #include <stdio.h> void print(const char *message) { printf(“%s\\n”, message); } That’s a simple pseudo-wrapper for printf. But represents any C function in the library you want to call. If you have a C++ function don’t forget to put extern C … Read more
Nick Craver mentioned checking the Configuration Manager to ensure you have the project selected to build for a given configuration. However, to set the build order for multiple projects in a solution right click the solution and choose “Project Build Order…” from the context menu.
I am trying to avoid any exceptions when cancelling. You shouldn’t do that. Throwing OperationCanceledException is the idiomatic way that “the method you called was cancelled” is expressed in TPL. Don’t fight against that – just expect it. It’s a good thing, because it means that when you’ve got multiple operations using the same cancellation … Read more