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  • Why are all response bodies after the first blank in Cucumber?

    - by James A. Rosen
    I'm using Cucumber (0.6.3), Cucumber-Rails (0.3.0), Webrat (0.7.0), and Rails (2.3.5) for some tests. The following scenario passes just fine: Scenario: load one page Given I am on the home page Then I should see "Welcome" The following, however, fails: Scenario: load two pages Given I am on the FAQ pag When I go to the home page Then I should see "Welcome" The problem is that the second @response.body is blank. I added a Rack middleware to get a little more information: class LogEachRequest def initialize(app); @app = app; @count = 0; end def call(env) puts "Processing request # #{@count += 1)" @app.call(env) end end It shows me only one request processed. That is, it only ever prints out Processing request # 1

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  • c++ warning: address of local variable

    - by chnet
    int * ref () { int tmp = 100; return &tmp; } int main () { int * a = ref(); cout << *a << endl; } I know the function ref () is allocated stack space. It will get destroyed as soon as the function exits. So the complier will give warning information. But my question is why the returning result is still correct.

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  • Test Jboss JMS externally - outside of the application server

    - by bmatsliah
    Hi All, I'm pretty new to the JMS functionality. I need to test a remote JMS which is on Jboss 4.2.1. I want to develop an external test (e.g from a main class) which sends and receives messages to/from the app. server. (I do have full access to the remote server.) My questions are: 1) How do I send messages to the Jboss JMS? 2) Where is the information needed to send a message located on the Jboss? ip, port, queue, user, pw, ect. to set up the local messaging test. 3) Is there a way to config/ develop a mechanism on the remote JMS Jboss server that sends back acknowledgments to the sender (in this case)? I greatly appreciate your help. Thanks, Ben

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  • Using polyfit to predict where the object falls ?

    - by ZaZu
    Hi there, I have information of an object being thrown at a parabolic pattern. There are 30 images in total taken at specific intervals from the start position till the end. Now I have managed to extract the x,y coordinates of the object being thrown in all 30 images... I think that using polyfit (or maybe polyval ? ) may help me predict where the object will fall after the first 15 images ... I just want to know, how can polyfit be used with the 30 x,y coordinates I have ? ( I have a loop to extract each image from a mat file 1 row at a time until 30 .. and then plot that image .. so should I use polyfit in the same loop before/after the plot ??? Any ideas ?? Thanks !

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  • Developing for mobile devices and desktop

    - by Augusto
    Hi, I'm starting a new project. It will run on devices running Windows CE, Windows Mobile 6 and will also have a desktop version. The software will connect to some equipments through the serial port, using it's own protocol. Basically it will: connect to the equipment send and receive info read and write binary files These tasks will be shared between desktop and mobile devices. I've been searching the information I need, but I still have some doubts: If I target Windows CE devices it will work with Windows Mobile 6 too? Creating a class library targeting Windows CE will give me any trouble on using it in the desktop version? (when I add a reference to that class library, my VS says that I could experience some unexpected results) Is it possible to install .NET CF 3.5 on devices running Windows CE 4.2? Thanks!

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  • Is block style really this important?

    - by Jack Roscoe
    I just watched a video of Douglas Crockford's presentation about his 2009 book JavaScript: The Good Parts. In the video, he explains that the following block is dangerous because it produces silent errors: return { ok: false }; And that it should actually be written like this (emphasising that although seemingly identical the behavioural difference is crucial): return { ok: false }; You can see his comments around 32 minutes into the video here: http://www.youtube.com/watch?v=hQVTIJBZook&feature=player_embedded#!&start=1920 I have not heard this before, and was wondering if this rule still applies or if this requirement in syntax has been overcome by JavaScript developments since this statement was made. I found this very interesting as I have NOT been writing my code this way, and wanted to check that this information was not out of date.

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  • System.Timers.Timer leaking due to "direct delegate roots"

    - by alimbada
    Apologies for the rather verbose and long-winded post, but this problem's been perplexing me for a few weeks now so I'm posting as much information as I can in order to get this resolved quickly. We have a WPF UserControl which is being loaded by a 3rd party app. The 3rd party app is a presentation application which loads and unloads controls on a schedule defined by an XML file which is downloaded from a server. Our control, when it is loaded into the application makes a web request to a web service and uses the data from the response to display some information. We're using an MVVM architecture for the control. The entry point of the control is a method that is implementing an interface exposed by the main app and this is where the control's configuration is set up. This is also where I set the DataContext of our control to our MainViewModel. The MainViewModel has two other view models as properties and the main UserControl has two child controls. Depending on the data received from the web service, the main UserControl decides which child control to display, e.g. if there is a HTTP error or the data received is not valid, then display child control A, otherwise display child control B. As you'd expect, these two child controls bind two separate view models each of which is a property of MainViewModel. Now child control B (which is displayed when the data is valid) has a RefreshService property/field. RefreshService is an object that is responsible for updating the model in a number of ways and contains 4 System.Timers.Timers; a _modelRefreshTimer a _viewRefreshTimer a _pageSwitchTimer a _retryFeedRetrievalOnErrorTimer (this is only enabled when something goes wrong with retrieving data). I should mention at this point that there are two types of data; the first changes every minute, the second changes every few hours. The controls' configuration decides which type we are using/displaying. If data is of the first type then we update the model quite frequently (every 30 seconds) using the _modelRefreshTimer's events. If the data is of the second type then we update the model after a longer interval. However, the view still needs to be refreshed every 30 seconds as stale data needs to be removed from the view (hence the _viewRefreshTimer). The control also paginates the data so we can see more than we can fit on the display area. This works by breaking the data up into Lists and switching the CurrentPage (which is a List) property of the view model to the right List. This is done by handling the _pageSwitchTimer's Elapsed event. Now the problem My problem is that the control, when removed from the visual tree doesn't dispose of it's timers. This was first noticed when we started getting an unusually high number of requests on the web server end very soon after deploying this control and found that requests were being made at least once a second! We found that the timers were living on and not stopping hours after the control had been removed from view and that the more timers there were the more requests piled up at the web server. My first solution was to implement IDisposable for the RefreshService and do some clean up when the control's UnLoaded event was fired. Within the RefreshServices Dispose method I've set Enabled to false for all the timers, then used the Stop() method on all of them. I've then called Dispose() too and set them to null. None of this worked. After some reading around I found that event handlers may hold references to Timers and prevent them from being disposed and collected. After some more reading and researching I found that the best way around this was to use the Weak Event Pattern. Using this blog and this blog I've managed to work around the shortcomings in the Weak Event pattern. However, none of this solves the problem. Timers are still not being disabled or stopped (let alone disposed) and web requests are continuing to build up. Mem Profiler tells me that "This type has N instances that are directly rooted by a delegate. This can indicate the delegate has not been properly removed" (where N is the number of instances). As far as I can tell though, all listeners of the Elapsed event for the timers are being removed during the cleanup so I can't understand why the timers continue to run. Thanks for reading. Eagerly awaiting your suggestions/comments/solutions (if you got this far :-p)

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  • How to gather usage statistics for iPhone app?

    - by FX
    I am in the process of releasing my first iPhone app. It's a simple utility, I'd just like to gauge the release process, app lifetime and trends, just so it can help make more realistic choices in future apps. I think it would be nice to have usage statistics in addition to download stats from Apple. For example, how many times is the app opened by each user, what iPhone OS version do they have, etc. I think some of it would simply be to try and connect to a known URL on one of my domains, passing it anonymous information (let's say, connect to http://mydomain.net/stats?app=myApp&version=1.0.0&os=3.1.2&used=18). My questions are: is that forbidden in any way by Apple's rules? (none that I could find, at least) does that seem reasonable to you? are there existing frameworks that would do that simpler/better that writing my own code?

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  • If I can host Visual Studio Form Designer in my application..

    - by this. __curious_geek
    Hi, I'm writing an application that lets the end use design a Form just the way Visual Studio lets you design a windows forms. I looked into visual studio forms designer articles in msdn and also studied open-source SharpDevelop editor. Both the examples host visual studio's windows forms designer to provide form-design service in their respective applications. My question is - Does it imply any licensing issue with Microsoft for directly hosting their Visual Studio Forms designer in my own application ? I don't want move ahead without proper and correct information. Can anybody here help me out if there's any licensing issues in case I want to host visual studio windows fomr designer in my own application. If there's any such licensing implication - then how does Sharp-Develop do this ?

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  • use multiple xsl files with one xml document

    - by paracaudex
    I have a single xml document (data.xml), which I display as HTML using an XSLT document (transform.xsl) with the following line in data.xml. <?xml-stylesheet type="text/xsl" href="transform.xsl"?> Suppose, however, I want to display this information in two different ways, one at http://www.domain.com/data.xml and one at http://www.domain.com/data2.xml. Both of these displays will use the same xml document but with different xsl's. Is there a way to do this without duplicating the xml file?

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  • Loading and managing reference data in Rails

    - by jonnii
    Most of the apps I've worked on have had some kind of reference data stored in the database, for example categories, zipcodes, area codes etc... this is information that's going to change very infrequently. Most of the time you want to load some kind of display name, and that's it. Currently this isn't causing me too many headaches, it's easy to :include the models I need when doing my queries, but going forward it causes a lot of query noise. Ideally I'd like to load the reference data when the app starts and when referencing it in queries it'll load from the cache instead of going to the database. What's the best way to manage this?

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  • How do I get user input into a PackageMaker package?

    - by Brian Postow
    I'm trying to create an install package. I've got all my components, and I think I understand most of the process. I want to have an install/set-up script that is run as part of the install. I planned to put it either as a post-install action or a post-install script. The problem is that I need user-input. I can't figure out how to either get user input into the script, or how to add a page in the install UI that has a place for user input and then pass that on to the script. I guess, I could write an apple-script with a dialog to ask the question, and then pass that information on to my shell script (or, write the whole thing in the applescript) but that seems unnecessarily complicated... Is there a normal way to do this? Thanks

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  • rails error on create action

    - by ash34
    SQL (2.0ms) SELECT task_report_requests_seq.NEXTVAL id FROM dual TaskReportRequest Create (2.2ms) INSERT INTO task_report_requests (location, created_at, updated_at, id, freq, login, task_dt) VALUES('020', TO_DATE('2010-05-25 05:02:38','YYYY-MM-DD HH24:MI:SS'), TO_DATE('2010-05-25 05:02:38','YYYY-MM-DD HH24:MI:SS'), 10023, 'M', NULL, TO_DATE('2010-05-30 00:00:00','YYYY-MM-DD HH24:MI:SS')) NoMethodError (You have a nil object when you didn't expect it! The error occurred while evaluating nil.call): app/controllers/task_report_requests_controller.rb:45:in `create' It says error evaluating nil.call . Can someone tell me when I would get such an error. I am not able to figure out with this information. thanks, ash

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  • In Winform I need ASP.NET like membership and roles stuff. But Roles doesn't work

    - by user512602
    Hi, following http://www.theproblemsolver.nl/usingthemembershipproviderinwinforms.htm I set up the membership & roles providers in app.config and try use it in code. Authentication works well, bur roles always returns empty roles array for connected user. This part works: If Membership.ValidateUser(userName, password) Then ' Set the current application principal information to a known user Dim identity As GenericIdentity Dim principal As RolePrincipal Dim user As MembershipUser user = Membership.GetUser(userName) identity = New GenericIdentity(user.UserName) principal = New RolePrincipal(identity) Threading.Thread.CurrentPrincipal = principal This one doesn't: If principal.IsInRole("Club") Then LoggedInUserRole = "Club" Return True Exit Function End If No error is thrown though. Similarly, if I try to add a user to a known, existing role, an exception is thrown : If Not Roles.IsUserInRole(userName, "club") Then Roles.AddUserToRole(userName, "club") End If Exception msg is: Cannot find role '' (I mean the role name isn't given back in exception.) Any clue? Please do not tell me to use Windows Client Administration within project services, I need my own SQL DB connection + the client app services is a bloated dfeature, bug prone.

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  • jquery hide all open divs and toggle

    - by Kyle
    I have 2 links and depending on which one they click on want to close all others and show only the information for that link. Example: <div class="shipping-container"> <a href="#" class="ups">Show UPS info</a> <a href="#" class="fedex">Show Fedex info</a> <div class="ups info" style="display:none">the info for ups</div> <div class="fedex info" style="display:none">the info for fedex</div> </div> Any ideas how I can do this with Jquery toggle for clicking one of the links and hide all others if there open. I only want to show info for one shipping method at a time. Also I would like an option for the user to click showall and all of them are displayed, if possible. Thanks in advance....

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  • Creating an OpenID provider with DotNetOpenAuth

    - by user1652616
    I'm trying to implement an OpenID provider with DotNetOpenAuth. I supply an OpenID url, and the consumer discovers my endpoint. I log into my provider, and the provider returns a Claimed Identifier and a Local Identifier to the consumer. But the consumer response has the following exception: The OpenID Provider issued an assertion for an Identifier whose discovery information did not match. Assertion endpoint info: ClaimedIdentifier: http://localhost/OpenIDUser.aspx/myuser ProviderLocalIdentifier: http://localhost/OpenIDUser.aspx/myuser ProviderEndpoint: http://localhost/OpenIDAuth.aspx OpenID version: 2.0 Service Type URIs: Discovered endpoint info: [] http://localhost/OpenIDAuth.aspx is my endpoint. http://localhost/OpenIDUser.aspx/myuser is my user identifier url, and I can browse to it successfully. It has a link to the endpoint in the header as follows: <link rel="openid.server" href="http://localhost/OpenIDAuth.aspx"></link> No matter what I try, the "Discovered endpoint info: []" part of the exception is always an empty array. Can anyone please help?

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  • Possible to use Javascript to get data from other sites?

    - by Xavier
    Is it possible for a web page using Javascript to get data from another website? In my case I want to get it for calculations and graphing a chart. But I'm not sure if this is possible or not due to security concerns. If it is considered a no no but there is a work around I would appreciate being told the work around. I don't want to have to gather this information on the server side if possible. Any and all help is appreciated.

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  • What some good PHP jobs?

    - by ggfan
    I am no professional PHP coder or anything, in fact I am fairly new. I can develop sites but nothing too crazy or fancy with PHP,Mysql,CSS,HTML,javascript. Up to now, all I have been doing is practice coding from books and websites. I am now looking for a 'real-life' experience. Besides going to a company and getting an interview, are there any other options in which I can get paid to code? I have posted some ads on craiglists but that's about it. And because this is my first time going to the 'real-word' and can make mistakes, am I liable if...a site I made for someone gets hacked and that person losses information?

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  • Swing: what to do when a GUI update takes too long and freezes other GUI elements?

    - by java.is.for.desktop
    Hello, everyone! I know that GUI code in Java Swing must be put inside SwingUtilities.invokeAndWait or SwingUtilities.invokeLater. This way threading works fine. Sadly, in my situation, the GUI update it that thing which takes much longer than background thread(s). More specific: I update a JTree with about just 400 entries, nesting depth is maximum 4, so should be nothing scary, right? But it takes sometimes one second! I need to ensure that the user is able to type in a JTextPane without delays. Well, guess what, the slow JTree updates do cause delays for JTextPane during input. It refreshes only as soon as the tree gets updated. I am using Netbeans and know empirically that a Java app can update lots of information without freezing the rest of the UI. How can it be done? NOTE 1: All those DefaultMutableTreeNodes are prepared outside the invokeAndWait. NOTE 2: When I replace invokeAndWait with invokeLater the tree doesn't get updated.

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  • Running Python code from Java program, shoudl i be doing this?

    - by Space Rocker
    i have a scenario where i draw a network and set all it's paraments on swing based gui, after that i have to translate this network into a python based script which another framework reads and realize this network in the form of virtual machines. As an example have look here: from mininet.topo import Topo, Node class MyTopo( Topo ): def *__init__*( self, enable_all = True ): super( MyTopo, self ).__init__() Host = 1 Switch = 2 self.add_node( Switch, Node( is_switch=True ) ) self.add_node( Host, Node( is_switch=False ) ) self.add_edge( Host, Switch ) self.enable_all() topos = { 'mytopo': ( lambda: MyTopo() ) } It simply connects a host to a switch and realize this topology on mininet framework. Now for now in order to realize the drawn network on java GUI here is what i am doing: I simply take the information from GUI and creates a new python file like the one above using java code and then run this file in mininet, which works fine somehow. I want to know, is this the correct and robust way how i am doing this or should i be looking further into java-python bridge like scenarios to be more effective or so as to say more professional.

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  • Selecting an item from a very large list

    - by Ben Fulton
    Suppose I have a list of a couple of thousand organizations and a user needs to be able to select one of them. The list is too large to populate in a dropdown at page load, and the user often knows what they want but it's not the first part of the organization name. That is, they know "Collections" but not that the precise name of the organization is "Department of Collections". So the user will need/want to type in some information. It's easy enough to use an autocompleting textbox of some kind, but I don't want to allow the user to type in random text - they have to choose one of the organizations explicitly. What's the best solution?

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  • Is there a way to avoid IE7 quirks mode while rendering XML + CSS?

    - by Steven Huwig
    I've got some DocBook documentation styled with a CSS xml-stylesheet declaration. It looks great in Firefox, but IE7 doesn't seem to understand the CSS child selectors (e.g. section > title { ... }). I think this is because IE is running in quirks mode to render this XML, and older versions of IE didn't support that CSS syntax at all. The pages I found on the web all seem to focus on HTML and XHTML doctypes and how IE will behave given various permutations of these values. I couldn't find any information about straight XML + CSS. Worse yet, it seems that random XML documents always end up in quirks mode, no matter what format or stylesheet directives they have. Is XML rendering in IE doomed to be IE5.5 compatible? Will I really have to rewrite my CSS?

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  • Smartest way to import massive datasets into a Rails application?

    - by williamjones
    I've got multiple massive (multi gigabyte) datasets I need to import into a Rails app. The datasets are currently each in their own database on my development machine, and I need to read from them and create rows in tables in my Rails database based on the information they contain. The tables in my Rails database will not be exactly the same as the tables in the source databases. What's the smartest way to go about this? I was thinking migrations, but I'm not exactly sure how to connect the migration to the databases, and even if that is possible, is that going to be ridiculously slow?

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  • Opening response stream in silverlight

    - by John Maloney
    Hello, I am attempting to return a image from a server using Silverlight 3. The server returns the Response stream like this: context.Response.ContentType = imageFactory.ContentType imgStream.WriteTo(context.Response.OutputStream) imgStream.Close() context.Response.End() On the Silverlight client I am handling the stream like: Dim request As HttpWebRequest = result.AsyncState Dim response As HttpWebResponse = request.EndGetResponse(result) Dim responseStream As IO.Stream = response.GetResponseStream() I want to take that stream and open the browsers save dialog, one option I have explored is using the Html.Window.Navigate(New Uri("image url")) and this opened the correct browser default dialog but it is not an option because I need to send extended information(e.g. XML) to the server through the HttpRequest.Headers.Item and the Navigate doesn't allow this. How can I take a Response Stream and force the default browser Save dialog to appear from the Silverlight Application without using the Html.Window.Navigate(New Uri("image url"))?

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  • Python: Count lines and differentiate between them

    - by Mister X
    I'm using an application that gives a timed output based on how many times something is done in a minute, and I wish to manually take the output (copy paste) and have my program, and I wish to count how many times each minute it is done. An example output is this: 13:48 An event happened. 13:48 Another event happened. 13:49 A new event happened. 13:49 A random event happened. 13:49 An event happened. So, the program would need to understand that 2 things happened at 13:48, and 3 at 13:49. I'm not sure how the information would be stored, but I need to average them after, to determine an average of how often it happens. Sorry for being so complicated!

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