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  • Rx Reactive extensions: Unit testing with FromAsyncPattern

    - by Andrew Anderson
    The Reactive Extensions have a sexy little hook to simplify calling async methods: var func = Observable.FromAsyncPattern<InType, OutType>( myWcfService.BeginDoStuff, myWcfService.EndDoStuff); func(inData).ObserveOnDispatcher().Subscribe(x => Foo(x)); I am using this in an WPF project, and it works great at runtime. Unfortunately, when trying to unit test methods that use this technique I am experiencing random failures. ~3 out of every five executions of a test that contain this code fails. Here is a sample test (implemented using a Rhino/unity auto-mocking container): [TestMethod()] public void SomeTest() { // arrange var container = GetAutoMockingContainer(); container.Resolve<IMyWcfServiceClient>() .Expect(x => x.BeginDoStuff(null, null, null)) .IgnoreArguments() .Do( new Func<Specification, AsyncCallback, object, IAsyncResult>((inData, asyncCallback, state) => { return new CompletedAsyncResult(asyncCallback, state); })); container.Resolve<IRepositoryServiceClient>() .Expect(x => x.EndRetrieveAttributeDefinitionsForSorting(null)) .IgnoreArguments() .Do( new Func<IAsyncResult, OutData>((ar) => { return someMockData; })); // act var target = CreateTestSubject(container); target.DoMethodThatInvokesService(); // Run the dispatcher for everything over background priority Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.Background, new Action(() => { })); // assert Assert.IsTrue(my operation ran as expected); } The problem that I see is that the code that I specified to run when the async action completed (in this case, Foo(x)), is never called. I can verify this by setting breakpoints in Foo and observing that they are never reached. Further, I can force a long delay after calling DoMethodThatInvokesService (which kicks off the async call), and the code is still never run. I do know that the lines of code invoking the Rx framework were called. Other things I've tried: I have attempted to modify the second last line according to the suggestions here: Reactive Extensions Rx - unit testing something with ObserveOnDispatcher No love. I have added .Take(1) to the Rx code as follows: func(inData).ObserveOnDispatcher().Take(1).Subscribe(x = Foo(x)); This improved my failure rate to something like 1 in 5, but they still occurred. I have rewritten the Rx code to use the plain jane Async pattern. This works, however my developer ego really would love to use Rx instead of boring old begin/end. In the end I do have a work around in hand (i.e. don't use Rx), however I feel that it is not ideal. If anyone has ran into this problem in the past and found a solution, I'd dearly love to hear it.

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  • Keep IIS 7 URL Rewrite module from matching /ScriptResource.axd

    - by D.R. Payne
    I have a website and I have installed URL Rewrite using Web Platform Installer. I wish to allow a user friendly URL like www.foo.com/123456 to go to www.foo.com/page.aspx?blah=123456. Using the User-friendly URL template accomplishes this except that the created rule also matches all of the /scriptresource.axd?blahblah created by ASP.NET which of course breaks most functionality. My initial attempts to exclude the script resource files have failed. The regex generated by the tool is ^([^/]+)/?$

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  • Python 3: regex to split on successions of newline characters

    - by Beau Martínez
    I'm trying to split a string on newline characters (catering for Windows, OS X, and Unix text file newline characters). If there are any succession of these, I want to split on that too and not include any in the result. So, for when splitting the following: "Foo\r\n\r\nDouble Windows\r\rDouble OS X\n\nDouble Unix\r\nWindows\rOS X\nUnix" The result would be: ['Foo', 'Double Windows', 'Double OS X', 'Double Unix', 'Windows', 'OS X', 'Unix'] What regex should I use?

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  • how to replace latex macros with their definitions (using latex)

    - by RamyenHead
    How can I replace all occurrence of user defined latex macros with their definitions? For example, given this file old.tex \newcommand{\blah}[2]{#1 \to #2} ... foo \blah{egg}{spam} bar ... how to generate the file below in an automatic way new.tex ... foo egg \to spam bar ... Instead of reimplementing latex macro logic with perl, can I use latex or tex engine itself to do this?

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  • JQuery removeClass wildcard

    - by Jasie
    Is there any easy way to remove all classes matching, for example, color-* so if I have an element: <div id="hello" class="color-red color-brown foo bar"></div> after removing, it would be <div id="hello" class="foo bar"></div> Thanks!

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  • symfony/propel: problem trying to add a new object action in a backend module

    - by user248959
    Hi, i have created this model: propel: shop_orders: orders_id: { phpName: Id, type: INTEGER, size: '11', primaryKey: true, autoIncrement: true, required: true } email: { type: VARCHAR, size: '45', required: true } Then i have generated an admin module and i have add this below to generator.yml: config: actions: ~ fields: ~ list: object_actions: foo: {} When I click on the foo action It generates this url: backend_dev.php/sp1/ListFoo/action?id=1 and I get this message: Action "sp1/action" does not exist. sf 1.4/propel Any idea? Javier

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  • wxPython - Running built in event prior to custom bound event

    - by jhaukur
    I'm trying to figure out how I can specify that the mouse_down event in wxPython (StyledTextCtrl) is first handled by the built in event listener, which changes the caret position, and then handled by my own custom event handler. To bind the custom event handler I use wx.EVT_LEFT_DOWN(self.styCtrl, self.OnMouseClick) def OnMouseClick(self, evt): evt.Skip() foo() I want the built in event handler to fire and complete prior to foo().

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  • How to rate-limit a pipe under linux ?

    - by Frédéric Grosshans
    Is there a filter which I could use to rate-limit a pipe on linux? If this exists, let call it rate-limit, I want to be able to type in a terminal something like cat /dev/urandom | rate-limit 3 -k | foo in order to send a a stream of random bytes to foo's standard input at a rate (lower than) 3 kbytes/s.

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  • sudo nohup nice <-- in what order?

    - by Jonah Braun
    So I have a script that I want to run as root, without hangup and nicely. What order should I put the commands in? sudo nohup nice foo.bash & or nohup nice sudo foo.bash & etc. I suspect it doesn't matter but would like some insight from those who really know.

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  • Valid URL-string as NSUrl becomes null

    - by Mike
    Hello, another issue where I seem to have found an solution for ObjC but not MonoTouch. I want a NSUrl from an URL (as string). The string may contain whitespace and backslashes. Why is NSUrl returning null for such string, even though these are valid urls in a browser? For example: NSUrl foo = NSUrl.FromString(@"http://google.com/search?\query"); foo == null Any suggestions?

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  • How Do I code this in python with simplejson

    - by Spikie
    how do i code a python program that return a json element that look like this {1:{'name':foo,'age':xl} 2:{'name':vee,'age':xx} .... } What i meant is that i want return nested dictionaries What i hoped to accomplish is something like this var foo = 1.name # to the the value of name in the clientside I hope all this made sense .English is my second language thanks in advance

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  • Can T-SQL function return user-defined table type?

    - by abatishchev
    I have my own type: CREATE TYPE MyType AS TABLE ( foo INT ) and a function receiving it as a parameter: CREATE FUNCTION Test ( @in MyType READONLY ) RETURNS @return MyType AS ... can it return MyType or only TABLE repeating MyType's structure: CREATE FUNCTION Test ( @in MyType READONLY ) RETURNS @return TABLE (foo INT) AS ... ?

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  • Nested Functions in C - Best Practices

    - by Justin Ethier
    I just realized a function may be defined inside another function in C: void main(){ int foo(){ return 2; }; printf("%d\n", foo()); } Besides being a neat trick, the useful thing about this is that the inner function is private to the outer function. But... is that a good enough reason to do this in a "real-world" application? What are the best practices for using this syntax?

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  • Django User model, adding function

    - by Hellnar
    Hello, I want to add a new function to the default User model of Django for retrieveing a related list of Model type. Such Foo model: class Foo(models.Model): owner = models.ForeignKey(User, related_name="owner") likes = models.ForeignKey(User, related_name="likes") ........ #at some view user = request.user foos= user.get_related_foo_models() Hwo can this be achieved ?

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  • vim how to comma align

    - by anon
    I have a bunch of code of the form: someVector.push_back(Foo("some name", 1.0, 3.1415926); someVector.push_back(Foo("different length name", 89.0, 2.717); ... 20 more entries I want sufficient space to be inserted so that my code is comma aligned, i.e. the "1.0," 's comma and the "89.0"'s comma are aligned -- is there builtins to do this?

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  • Regex to split on successions of newline characters

    - by Beau Martínez
    I'm trying to split a string on newline characters (catering for Windows, OS X, and Unix text file newline characters). If there are any succession of these, I want to split on that too and not include any in the result. So, for when splitting the following: "Foo\r\n\r\nDouble Windows\r\rDouble OS X\n\nDouble Unix\r\nWindows\rOS X\nUnix" The result would be: ['Foo', 'Double Windows', 'Double OS X', 'Double Unix', 'Windows', 'OS X', 'Unix'] What regex should I use?

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  • URL-&coordinate based screen capturing tool

    - by Enrico Stahn
    Hello, I'm searching for a screen capturing tool which captures areas of an website/web-application based on the url. The very best for me would be an firefox/ie addon with an API accessible via javascript. Example: URL, Coordinates, Filename http://foo.com/project/show/33; rectangle:10,10,50,50; myapp-area1.jpg http://foo.com/project/show/33; rectangle:100,100,150,150; myapp-area2.jpg

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  • PHP Coding styles return; in switch/case

    - by ArneRie
    Hi , we're trying to implement new coding style guidelines for our team, the php codesniffer is printing an warning on switch case statements when no "break" is found like: switch ($foo) { case 1: return 1; case 2: return 2; default: return 3; } is there any good reason to use : switch ($foo) { case 1: return 1; break; } ?? the break is never reached ?

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  • How do you mock the session object collection using Moq

    - by rayray2030
    I am using shanselmann's MvcMockHelper class to mock up some HttpContext stuff using Moq but the issue I am having is being able to assign something to my mocked session object in my MVC controller and then being able to read that same value in my unit test for verification purposes. My question is how do you assign a storage collection to the mocked session object to allow code such as session["UserName"] = "foo" to retain the "foo" value and have it be available in the unit test.

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