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• Testing sample code in python modules

  - by Andrew Walker

  I'm in the process of writing a python module that includes some samples. These samples aren't unit-tests, and they are too long and complex to be doctests. I'm interested in best practices for automatically checking that these samples run. My current project layout is pretty standard, except that there is an extra top level makefile that has build, install, unittest, coverage and profile targets, that delegate responsibility to setup.py and nose as required. projectname/ Makefile README setup.py samples/ foo-sample foobar-sample projectname/ __init__.py foo.py bar.py tests/ test-foo.py test-bar.py I've considered adding a sampletest module, or adding nose.tools.istest decorators to the entry-point functions of the samples, but for a small number of samples, these solutions sound a bit ugly. This question is similar to http://stackoverflow.com/questions/301365/automatically-unit-test-example-code, but I assume python best practices will differ from C#

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• WCF configuration file: why do we need clientBaseAddress in Binding section?

  - by Captain Comic

  Hi, There are three sections in WCF configuration for service client: Look at bindings = clientBaseAddress Why do we need to specify callback address? Is this field required? Why .NET is unable to determine the address of client? Does it mean that i can specify callback service that is located on some other machine? <configuration> <system.serviceModel> <client> <endpoint address= </client> <bindings> <wsDualHttpBinding> <binding name= clientBaseAddress= maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" </binding> </wsDualHttpBinding> </bindings> <behaviors> <endpointBehaviors> <behavior name=> </behavior> </endpointBehaviors> </behaviors> </system.serviceModel>

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• Excel VSTO ->Hide/Unhide Ribbon Button based on another Ribbon Button click

  - by Jignesh

  We are creating Excel 2007 AddIn using VSTO. Now we have a scenario where in there are 2 buttons. Button 'A' and Button 'B'. Button 'B'needs to be hidden based on the click on the button 'A'. But since the ribbon bar is not getting refreshed dynamically we are unable to see the change on the Ribbon Bar. I heard from some blods we need to use callback methods for the same. Could you please explain and put some code snippet on how to do that ? Will highly appreciate if anyone can help asap ...

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• When would ShowDialog() return null?

  - by Joe White

  WPF's Window.ShowDialog method returns a nullable boolean. So does CommonDialog.ShowDialog. Now, I understand cases where these would return false (user clicked Cancel or pressed Esc), and when they would return true (code sets Window.DialogResult to true, probably in response to OK being clicked). But null? My first thought is that clicking the title bar's Close button might return null. But the docs state (and I confirmed by testing) that the title-bar Close button is treated as a Cancel. So when would Window.ShowDialog or CommonDialog.ShowDialog ever return null?

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• Groovy Prototype Object

  - by Holden

  I have a method with an incoming variable, which represents a script. e.g. hello.groovy Foo.init(this) Foo.groovy class Foo { static init(app) { } } What is the best way to add a ton of new functionality to the app variable in the init method? Basically, I would like to add all the functionality of another object to the app object. For instance, if I had another class: class Bar { def a() { } def b() { } } I would like the app object to basically be a new Bar(). In JavaScript, this is easy by using the prototype object, but I cannot seem to get it working in groovy. What is the best way to accomplish this? Or should I be doing something differently?

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• iPhone app running in Instruments fails with unrecognized selector

  - by Mark Smith

  I have an app that appears to run without problems in normal use. The Clang Static Analyzer reports no problems either. When I try to run it in Instruments, it fails with an unrecognized selector exception. The offending line is a simple property setter of the form: self.bar = baz; To figure out what's going on, I added an NSLog() call immediately above it: NSLog(@"class = %@ responds = %d", [self class], [self respondsToSelector:@selector(setBar:)]); self.bar = baz; On the emulator (without Instruments) and on a device, this shows exactly what I'd expect: class = Foo responds = 1 When running under Instruments, I get: class = Foo responds = 0 I'm stumped as to what could cause this. Perhaps a different memory location is getting tromped on when it's in the Instruments environment? Can anyone suggest how I might debug this?

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• WCF InProcFactory error

  - by Terence Lewis

  I'm using IDesign's ServiceModelEx assembly to provide additional functionality over and above what's available in standard WCF. In particular I'm making use of InProcFactory to host some WCF services within my process using Named Pipes. However, my process also declares a TCP endpoint in its configuration file, which I host and open when the process starts. At some later point, when I try to host a second instance of this service using the InProcFactory through the named pipe (from a different service in the same process), for some reason it picks up the TCP endpoint in the configuration file and tries to re-host this endpoint, which throws an exception as the TCP port is already in use from the first hosting. Here is the relevant code from InProcFactory.cs in ServiceModelEx: static HostRecord GetHostRecord<S,I>() where I : class where S : class,I { HostRecord hostRecord; if(m_Hosts.ContainsKey(typeof(S))) { hostRecord = m_Hosts[typeof(S)]; } else { ServiceHost<S> host; if(m_Singletons.ContainsKey(typeof(S))) { S singleton = m_Singletons[typeof(S)] as S; Debug.Assert(singleton != null); host = new ServiceHost<S>(singleton,BaseAddress); } else { host = new ServiceHost<S>(BaseAddress); } string address = BaseAddress.ToString() + Guid.NewGuid().ToString(); hostRecord = new HostRecord(host,address); m_Hosts.Add(typeof(S),hostRecord); host.AddServiceEndpoint(typeof(I),Binding,address); if(m_Throttles.ContainsKey(typeof(S))) { host.SetThrottle(m_Throttles[typeof(S)]); } // This line fails because it tries to open two endpoints, instead of just the named-pipe one host.Open(); } return hostRecord; }

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• How to draw scruffy diagrams in R?

  - by Karsten W.

  Any ideas how to do "scruffy" bar and scatter plots (like yuml) in R?

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• Upload large files in .NET

  - by Austin

  I've done a good bit of research to find an upload component for .NET that I can use to upload large files, has a progress bar, and can resume the upload of large files. I've come across some components like AjaxUploader, SlickUpload, and PowUpload, to name a few. Each of these options cost money and only PowUpload does the resumable upload, but it does it with a java applet. I'm willing to pay for a component that does those things well, but if I could write it myself that would be best. I have two questions: Is it possible to resume a file upload on the client without using flash/java/Silverlight? Does anyone have some code or a link to an article that explains how to write a .NET HTTPHandler that will allow streaming upload and an ajax progress bar? Thank you, Austin [Edit] I realized I do need to be able to do resumable file uploads for my project, any suggestions for components that can do that?

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• Adding a UIBarButtonItem to a programattically allocated UINavigationBar

  - by iamdadude

  I have a cameraoverlayview that allocates a UINavigationBar to the top of the screen like this - CGRect navbarFrame = CGRectMake(0, 0, 320, 44); navigationBar = [[UINavigationBar alloc] initWithFrame:navbarFrame]; navigationBar.delegate = self; Now I want to add a UIBarButtonItem as the left button to the navigation bar, but the standard navigationbar.leftitem doesn't work. So I tried doing this - closebutton = [[UIBarButtonItem alloc] initWithTitle:closebuttontext style:UIBarButtonItemStylePlain target:self action:@selector(close)]; navigationBar.topItem.leftBarButtonItem = closebutton; But it doesn't work either. Can anyone point me in the right direction? As far as the navigation bar loading up correctly in the cameraoverlayview, it works 100%.

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• JSlider jump on mouse click

  - by Aly

  Hi, I have a JSlider which shows bet sizes (for a poker game) I am trying to achieve the effect that when a mouse click occurs the slider jumps forward by a bet amount (i.e. a big blind amount) rather than just incrementing by one. If the mouse click happens to the left of the bar i want it to decrement by a fixed amount else increment. I looked into attaching a mouse listener, but do not know how I can use the event to find out on what side of the bar the mouse was clicked. Any ideas?

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• Unusual request URL in ASP.NET health monitoring event

  - by Troy Hunt

  I’m seeing a rather strange occurrence in the request information section of an ASP.NET health monitoring email I hope someone can shed some light on. This is a publicly facing website which runs on infrastructure at an Indian hosting provider. Health monitoring is notifying us of server errors via automated email but every now and then the requested URL appears as a totally different website. For example: Request information: Request URL: http://www.baidu.com/Default.aspx Request path: /Default.aspx User host address: 221.13.128.175 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\NETWORK SERVICE Obviously the site in question is not Baidu and obviously this attribute is not the referrer either; the “Request URL” value is the path which has generated the error. The IP address is located in Beijing (coincidental given the Baidu address?) and in this instance it looks like the SQL server backend was not accessible (I haven't included the entire error message for security's sake). What would cause the request URL attribute to be arbitrarily changed to that of another site? I’ve never seen this occur in a health monitoring event before. Thanks!

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• Public and Internal members in an Internal class?

  - by Noldorin

  Ok, so this may be a bit of a silly question, and there's certainly the obvious answer, but I was curious if I've missed any subtleties here. Is there any difference in terms of visibility/usability between a public member declared in an internal class and an internal member declared in an internal class? i.e. between internal class Foo { public void Bar() { } } and internal class Foo { internal void Bar() { } } If you declared the method as public and also virtual, and then overrode it in a derived class that is public, the reason for using this modifier is clear. However, is this the only situation... am I missing something else?

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• Subview position issue after UIOrientation (rotation) change

  - by asadqamber

  I have a viewController and have added a subview in it programatically. secondView.autoresizingMask = UIViewAutoresizingFlexibleWidth; [self.view addSubview:secondView]; I guess when the device rotates, my mainViewController knows that orientation changed, but the subview (secondView) inside the mainViewController does not know this, so I change its frame to landscape size in willRotateToInterfaceOrientation. secondView.frame = CGRectMake(0, 0, 480 , 260); This does not set in the correct position, it's 11 px below the NavigationBar. Why does it start from 11 px below the navigation bar? The navigation bar shrinks when we move from portrait to landscape mode and its because of this that my subview is 11px below.

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• Combine guava's ImmutableList and varargs

  - by Stas Kurilin

  I want create constructor that will take one or more integers and save it into field as ImmutableList. According to "The right way to use varargs to pass one or more arguments" by Bloch's Item 42 I create smt like class Foo{ private final ImmutableList<Integer> bar; public Foo(Integer first, Integer... other) { this.bar = ImmutableList.<Integer>builder() .add(first) .addAll(Arrays.asList(other)) .build(); } } Why builder doesn't get generic automatically? And, as it smells. How I can rewrite it?

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• Custom background for UINavigationBar in landcape mode

  - by lostInTransit

  Hi I am adding a custom background for my UINavigationBar. It works fine as long as the phone is in portrait mode. As soon as I switch to landscape mode, half the bar appears blue (the default navbar color) and half of it has my image How can I stretch the image for landscape mode and make it small again for portrait mode? Thanks Solution Incase anyone is looking for an answer to how to add an image to navigation bar - here goes UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, 480.0, 44.0)]; [imgView setImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"navbar_landscape" ofType:@"png"]]]; [navigationController.navigationBar addSubview:imgView]; [imgView release];

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• LINQ OrderBy: best search results at top of results list

  - by p.campbell

  Consider the need to search a list of Customer by both first and last names. The desire is to have the results list sorted by the Customer with the most matches in the search terms. FirstName LastName ---------- --------- Foo Laurie Bar Jackson Jackson Bro Laurie Foo Jackson Laurie string[] searchTerms = new string[] {"Jackson", "Laurie"}; //want to find those customers with first, last or BOTH names in the searchTerms var matchingCusts = Customers .Where(m => searchTerms.Contains(m.FirstName) || searchTerms.Contains(m.LastName)) .ToList(); /* Want to sort for those results with BOTH FirstName and LastName matching in the search terms. Those that match on both First and Last should be at the top of the results, the rest who match on one property should be below. */ return matchingCusts.OrderBy(m=>m); Desired Sort: Jackson Laurie (matches on both properties) Foo Laurie Bar Jackson Jackson Bro Laurie Foo How can I achieve this desired functionality with LINQ and OrderBy / OrderByDescending?

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• showing progressbar progress with ajax request

  - by Ygam

  Hi guys! I want to show progress with jquery ui progress bar when an ajax request fires and when it finishes. The problem is I don't know how to set values for the progress bar depending on the progress of the ajax request. Please hlep. Here's a code to start with: function ajaxnews() { $('.newstabs a').click(function(e){ var section = $(this).attr('id'); var url = base + 'news/section/' + section; $.ajax({ url : url, dataTye : 'html', start : loadNews, success : fillNews }); }); } // start callback functions function loadNews() { $('#progressbar').fadeIn(); $('#progressbar').progressbar({ //how shoud I set the values here}); } function fillNews() { $('#progressbar').progressbar('option', 'value', ?? /* how do I find this?*/); $('#progressbar').fadeOut(); }

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• Why so much stack space used for each recursion?

  - by Harvey

  I have a simple recursive function RCompare() that calls a more complex function Compare() which returns before the recursive call. Each recursion level uses 248 bytes of stack space which seems like way more than it should. Here is the recursive function: void CMList::RCompare(MP n1) // RECURSIVE and Looping compare function { auto MP ne=n1->mf; while(StkAvl() && Compare(n1=ne->mb)) RCompare(n1); // Recursive call ! } StkAvl() is a simple stack space check function that compares the address of an auto variable to the value of an address near the end of the stack stored in a static variable. It seems to me that the only things added to the stack in each recursion are two pointer variables (MP is a pointer to a structure) and the stuff that one function call stores, a few saved registers, base pointer, return address, etc., all 32-bit (4 byte) values. There's no way that is 248 bytes is it? I don't no how to actually look at the stack in a meaningful way in Visual Studio 2008. Thanks

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• testing SpringMVC controllers

  - by Don

  Hi, I'm unit-testing my SpringMVC (v. 2.5) controllers using code like the following: public void testParamValidation() { MyController controller = new MyController(); MockHttpServletRequest request = new MockHttpServletRequest(); request.addParameter("foo", "bar"); request.addParameter("bar", baz"); ModelAndView mav = controller .handleRequest(request, new MockHttpServletResponse()); // Do some assertions on mav } This controller is a subclass of AbstractCommandController, so the parameters are bound to a command bean, and any binding or validation errors are stored in an object that implements the Errors interface. I can't seem to find any way to access this Errors from within the test, is this possible? Thanks, Don

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• Java bitshift strangeness

  - by Martin

  Java has 2 bitshift operators for right shifts: >> shifts right, and is dependant on the sign bit for the sign of the result >>> shifts right and shifts a zero into leftmost bits http://java.sun.com/docs/books/tutorial/java/nutsandbolts/op3.html This seems fairly simple, so can anyone explain to me why this code, when given a value of -128 for bar, produces a value of -2 for foo: byte foo = (byte)((bar & ((byte)-64)) >>> 6); What this is meant to do is take an 8bit byte, mask of the leftmost 2 bits, and shift them into the rightmost 2 bits. Ie: initial = 0b10000000 (-128) -64 = 0b11000000 initial & -64 = 0b10000000 0b10000000 >>> 6 = 0b00000010 The result actually is -2, which is 0b11111110 Ie. 1s rather than zeros are shifted into left positions

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• GpsSatellite.getSnr() - What is the value range?

  - by rflexor

  I'm building a Sat-View that draws a small bar-chart for available satellites and their signal strength (or better: their signal-to-noise-ratio / SNR). The javadoc doesn't say what value-range to expect for the SNR. The NMEA-Standard says 0-99, but even in best conditions my G1 doesn't reach that value. I also read that different manufacturers use different value-ranges for the SNR, so is that true for android-devices, too? Or is there a unified value range on that plattform and if so, what is it? The lack of information in the docs leads me to suspect I just get the "raw" SNR from the driver, in which case I'd like to know: What do you think is the best approach to visualize that unknown value-range in a bar-chart?

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• How to improve my Python regex syntax?

  - by FarmBoy

  I very new to Python, and fairly new to regex. (I have no Perl experience.) I am able to use regular expressions in a way that works, but I'm not sure that my code is particularly Pythonic or consise. For example, If I wanted to read in a text file and print out text that appears directly between the words 'foo' and 'bar' in each line (presuming this occurred one or zero times a line) I would write the following: fileList = open(inFile, 'r') pattern = re.compile(r'(foo)(.*)(bar)') for line in fileList: result = pattern.search(line) if (result != None): print result.groups()[1] Is there a better way? The if is necessary to avoid calling groups() on None. But I suspect there is a more concise way to obtain the matching String when there is one, without throwing errors when there isn't. I'm not hoping for Perl-like unreadability. I just want to accomplish this common task in the commonest and simplest way.

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• Extend RedCloth via Redmine plugin?

  - by FLX

  Hello, I'm new to Ruby/Redmine/Redcloth but I'm trying to achieve the following: The default way to build a link in Textile is "foo":http://bar. However, 90% of the day I use Atlassian products, which use [foo|http://bar] as link markup. To keep everything a bit uniform I'd like to implement this in Redmine via a plugin. However, it appears that you can't change the macro syntax so instead I'll have to look into extending RedCloth to accept this form of inserting links. Does anyone know how I can achieve this? Thank you and merry christmas, Dennis

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• RegEx to extract all HTML tag attributes including inline JavaScript

  - by Mike

  I found this useful regex code here while looking to parse HTML tag attributes: (\S+)=["']?((?:.(?!["']?\s+(?:\S+)=|[>"']))+.)["']? It works great, but it's missing one key element that I need. Some attributes are event triggers that have inline Javascript code in them like this: onclick="doSomething(this, 'foo', 'bar');return false;" Or: onclick='doSomething(this, "foo", "bar");return false;' I can't figure out how to get the original expression to not count the quotes from the JS (single or double) while it's nested inside the set of quotes that contain the attribute's value.

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