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  • How do i return a StringWriter When I cant Clone it?

    - by acidzombie24
    My code looks like the below. Obviously i cant write 'ok' because the object has been disposed. I cant do return sw.Clone() bc clone doesnt exist. If i dont use a using then at any point between = new and return (like iterating and writing to the object as my example doesnt do) can have an exception and thus not disposing the object. Am i to define sw outside of a try block and check if its null then dispose in a catch block? That seems like a bit of excessive work. Is there a better way? is that the only way? static void func1() { using (var sw = func2()) { sw.WriteLine("Ok"); } } static StringWriter func2() { using (var sw = new StringWriter()) { return sw; } }

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  • Python Daemon Subprocess not working at boot

    - by Adam Richardson
    I am attempting to write a python daemon that will launch at boot. The goal of the script is to receive a job from our gearman load balancing server and complete the job. I am using the python-daemon module from pypi (http://pypi.python.org/pypi/python-daemon/). The nature of the job that it is completing is converting images in the orf (olympus raw image format) to jpeg. In order to accomplish this an outside program is used, ufraw in this case. The problem comes in when I start the daemon at boot, if I launch from the shell it runs perfectly and completes the work. When it starts at boot it is unable to launch the subprocess command. commandString = '/usr/bin/ufraw-batch --interpolation=four-color --wb=camera --compression=100 --output="' + outfile + '" --out-type=jpg --overwrite "' + infile + '"' args = shlex.split(commandString) process = subprocess.Popen(args).wait() I am not sure what I am doing wrong. Thanks for any help.

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  • JSF and Ajax4JSF on WebSphere 6.1 --> Problem with Form Submission

    - by Shamik
    Has anyone setup JSF1.1 with Ajax4JSF on websphere 6.1 ? I followed the instructions as mentioned in the developer guide . The problem that I am facing is that once I use a4j:support on any of my h:inputText item, the form values are not getting set in the backing bean on the submission of the form. I do have <h:messages> tag present just above the form so that all the problems should be reported there but I do not see any error message once I submit the form. But I do see that the values are not getting set. I need to find the solution as early as possible otherwise I probably have to throw the ajax4jsf framework and write javascripts instead :(

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  • WCF service hosted in IIS 5.0 - http get methods not invoked through the browser

    - by Dmitry
    I have service hosted in IIS5.0 and configured such way : ** <behaviors> <endpointBehaviors> <behavior name="GalleriesBehavior"> <webHttp/> </behavior> ** When I make request to http://localhost/sandboxWidget/Galleries.svc?Test ,the message I get is : "Metadata publishing for this service is currently disabled." and instructions how to expose meta data exchange...Tried this but doesn't help.. I can write any function name ,even not existing (http://localhost/sandboxWidget/Galleries.svc?blabla) ,but the message is same .... I'm new to Wcf ,but what looks me strange is that ,the same application was working in my job environment ,but not on my home PC .... I have same VS2008,NET3.5 with service pack 1

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  • Django: way to test what class a generic relation content_object is?

    - by bitbutter
    In my project I have a class, NewsItem. Instances of NewsItem act like a wrapper. They can be associated with either an ArtWork instance, or an Announcement instance. Here's how the NewsItem model looks: class NewsItem(models.Model): content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = generic.GenericForeignKey('content_type', 'object_id') date = models.DateTimeField(default=datetime.datetime.now,) class Meta: ordering = ('-date',) def __unicode__(self): return (self.title()) In a template I'm dealing with a NewsItem instance, and would like to output a certain bunch of html it it's 'wrapping' an Artwork instance, and a different bunch of html if it's wrapping an Announcement instance. Could someone explain how I can write a conditional to test for this? My first naive try looked like this: {% if news_item.content_object.type=='Artwork' %}do this{% else %}do that{% endif %}

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  • Problems with noobs putting my GA code into their sites

    - by dclowd9901
    I don't mean for the title to be derogatory, but this is a rather frustrating problem, and I'm looking for a good workaround, given a language barrier involved. I have a site set up for a plugin I wrote, and, rather than use the site's resources to write their own code, I've had people simply rip the code from the samples on the site. Normally, this wouldn't be any issue at all, but they are also taking my Google Analytics instantiation, so my Analytics data is getting very skewed by incorporating visitation data from their websites. I've been able to contact the English-speaking site owners with little issue. The problem lies in the Japanese language sites that are yanking the code. I have no idea how to ask them to take down the analytics portion. Long-term, I'm providing a package that streamlines the learning-to-use process, but in the meantime, what can I do about this language barrier? Is there a way around this problem that I haven't thought of?

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  • How to apply Data Mining (Association Rule) to a huge database ?

    - by stckvrflw
    Hello What I want to do is to apply Association method of data mining on my SQL Server 2000 database. Association rule is something like "finding the most frequent items that appear together in database." For those who don't know or who want to remember what is association method is like, take a look at this presentation about Association rule in Data Mining. www.authorstream.com/Presentation/a.besimi-233030-data-mining-intro-seeu-education-ppt-powerpoint 17th slide gives a nice example of applying association rule on a database. So Can you help me about how should I write my SQL codes (If they will be sufficient of course) Thanks.

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  • Syntax error in INSERT INTO statement

    - by Amit Kr. Ghosh
    conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\\database.mdb"); conn.Open(); com = new OleDbCommand(@"insert into group (groupid,groupname,nature,effect) values (@groupid,@groupname,@nature,@effect)", conn); com.Parameters.AddWithValue("@groupid", intialtxt); com.Parameters.AddWithValue("@groupname", groupnametxt); com.Parameters.AddWithValue("@nature", groupnaturecombo); com.Parameters.AddWithValue("@effect", efectivegroupcombo); com.ExecuteNonQuery(); conn.Close() i have write this connection ,but i get one error Syntax error in INSERT INTO statement please someone help me.

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  • Monotouch/C# version of "stringWithContentsOfUrl"

    - by Pselus
    I'm trying to convert a piece of Objective-C code into C# for use with Monotouch and I have no idea what to use to replace stringWithContentsOfUrl Should I use something like: HttpWebRequest request = (HttpWebRequest) WebRequest.Create("http://www.helephant.com"); HttpWebResponse response = (HttpWebResponse) request.GetResponse(); if (response.StatusCode == HttpStatusCode.OK && response.ContentLength > 0){ TextReader reader = new StreamReader(response.GetResponseStream()); string text = reader.ReadToEnd(); Console.Write(text); } Is that even safe to use in MonoTouch? Will it work for the iPhone?

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  • What is the performance impact of tracing in C# and ASP.NET?

    - by SkippyFire
    I found this in some production login code I was looking at recently... HttpContext.Current.Trace.Write(query + ": " + username + ", " + password)); ...where query is a short SQL query to grab matching users. Does this have any sort of performance impact? I assume its very small. Also, what is the purpose of this exact type of trace, using the HTTP Context? Where does this data get traced to? Thanks in advance!

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  • sorting content of a text file in python

    - by rabidmachine9
    I have this small script that sorts the content of a text file # The built-in function `open` opens a file and returns a file object. # Read mode opens a file for reading only. try: f = open("tracks.txt", "r") try: # Read the entire contents of a file at once. # string = f.read() # OR read one line at a time. #line = f.readline() # OR read all the lines into a list. lines = f.readlines() lines.sort() f = open('tracks.txt', 'w') f.writelines(lines) # Write a sequence of strings to a file finally: f.close() except IOError: pass the only problem is that the text is displayed at the bottom of the text file everytime it's sortened... I assume it also sorts the blank lines...anybody knows why? thanks in advance

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  • Avoiding Nested Queries

    - by Midhat
    How Important is it to avoid nested queries. I have always learnt to avoid them like a plague. But they are the most natural thing to me. When I am designing a query, the first thing I write is a nested query. Then I convert it to joins, which sometimes takes a lot of time to get right. And rarely gives a big performance improvement (sometimes it does) So are they really so bad. Is there a way to use nested queries without temp tables and filesort

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  • Manually Writing the HTML in TWebBrowser

    - by nomad311
    I am using the strategy suggested here: http://cc.embarcadero.com/Item/23992 to get my HTML in the TWebBrowser, but I get a bunch of JavaScript errors when the page loads. If I click yes enough times I can see a page with no formatting and I'm guessing the page does nothing. My theory is that because the links in the HTML are relative, the browser can't load any of it. I have switch from passing the URL, 'about:blank' to the navigate function, to passing the servers home page - in the hopes that some internal mechanism will be able to generate full paths, but no luck. Any one successfully been able to manually write HTML to the TWebBrowser.

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  • help with array

    - by JohnWong
    You will write a program that evaluates the integral of sin(x) using the left-hand rectangle rule with 2000 subintervals, over 10 intervals. The intervals to test are [0, 1), [1, 2), …, [8, 9), [9, 10). You will declare an array of type double that can hold 10 elements, and you will use this array to hold all 10 results you get from evaluating each interval. I am in testing my code, what should be the output? For example, [0, 1)? Any idea? Thanks.

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  • Difficulty to start up with basic unit test (Sample from my book -- SportsStore)

    - by Richard77
    Hello, I'm really new in TDD and, actually, I'm trying to follow the sample from my book (SportsStore -- Pro ASP.NET MVC Framework/Steve Sanderson/APRESS). I'm on pages 103-105. Although there are more on this, as new to all of this, I'm concerned with the following statements. ProductsController controller = new ProductsController(repository); var result = controller.List(2); //... regarding the above statements, when I write this (as in the book), var products = result.ViewData.Model as IList<Product>; I get a compiler error "System.Web.MVC.ActionResult" does not contain a definition for ViewData ..." But, when I remove the List() from the statement, then the compiler error disapear. var result = controller.List(2);//Doesn't work var result = controller;//It works Is something wrong there? I checked Apress website for that book, but there is nothing listed as Errata or issue. So I'm really lost. Thanks for helping

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  • Display array values from web service method

    - by chupinette
    Hello all! I'm new to web services and im actually trying to learn how to develop one in C#. I have the following method in my web service which actually displays an array of int when i test it. [WebMethod] public int[] FindID(string str1,string str2) { Customer obj = new Customer(); obj.FindMatch(str1,str2); return obj.customer_id; } Now in my web application in which i have a button, the code is as below: Dim obj As localhost.Service = New localhost.Service Dim str1 As String = Session("str1") Dim str2 As String = Session("str2") Response.Write(obj.FindID(str1, str2)) The problem is that only the first value from the array is being displayed. Can anyone please help me to solve this problem?

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  • How do you verify the correct data is in a data mart?

    - by blockcipher
    I'm working on a data warehouse and I'm trying to figure out how to best verify that data from our data cleansing (normalized) database makes it into our data marts correctly. I've done some searches, but the results so far talk more about ensuring things like constraints are in place and that you need to do data validation during the ETL process (E.g. dates are valid, etc.). The dimensions were pretty easy as I could easily either leverage the primary key or write a very simple and verifiable query to get the data. The fact tables are more complex. Any thoughts? We're trying to make this very easy for a subject matter export to run a couple queries, see some data from both the data cleansing database and the data marts, and visually compare the two to ensure they are correct.

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  • Creating/Handling events for controls when added during runtime.

    - by AllStar11
    I am using a Repeater which contains a placeholder. The placeholder is bound to my database and each ItemTemplate contains 1-6 radiobuttons depending on what the database returns. What I need to do is somehow keep track of which one of the radiobuttons is checked for each question so I can write the user's answers to the database when they complete the test, any ideas?? <asp:Repeater ID="Repeater1" OnItemDataBound="R1_ItemDataBound" runat="server"> <ItemTemplate> <asp:PlaceHolder ID="phAnswers" runat="server"> </asp:PlaceHolder> </ItemTemplate> </asp:Repeater> Sub R1_ItemDataBound(ByVal Sender As Object, ByVal e As RepeaterItemEventArgs) Dim tempPH As PlaceHolder tempPH = e.Item.FindControl("phAnswers") For x As Integer = 0 To (t_MC.Count - 1) newRadio = New RadioButton newRadio.ID = "Answer" + x.ToString newRadio.GroupName = "Answer" + tempQuestion.ID.ToString newRadio.Text = t_MC(x).Value newRadio.Width = 800 tempPH.Controls.Add(newRadio)

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  • Are there any nasty side affects if i lock the HttpContext.Current.Cache.Insert method

    - by Ekk
    Apart from blocking other threads reading from the cache what other problems should I be thinking about when locking the cache insert method for a public facing website. The actual data retrieval and insert into the cache should take no more than 1 second, which we can live with. More importantly i don't want multiple thread potentially all hitting the Insert method at the same time. The sample code looks something like: public static readonly object _syncRoot = new object(); if (HttpContext.Current.Cache["key"] == null) { lock (_syncRoot) { HttpContext.Current.Cache.Insert("key", "DATA", null, DateTime.Now.AddMinutes(5), Cache.NoSlidingExpiration, CacheItemPriority.Normal, null); } } Response.Write(HttpContext.Current.Cache["key"]);

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  • Websphere CE issue in Eclipse EE

    - by Moev4
    I have downloaded the Websphere 2.1 App Server and verified that it works fine. I now wanted to use eclipse EE to manage it by adding the server to the server tab. Everything seems to work fine when going through the setup but when I go to start the server I get the error message: ERROR [GBeanInstanceState] Error while starting; GBean is now in the FAILED state: abstractName="org.apache.geronimo.framework/j2ee-system/2.1.4/car?ServiceModule=org.apache.geronimo.framework/j2ee-system/2.1.4/car,j2eeType=AttributeStore,name=AttributeManager" java.io.IOException: Unable to write manageable attribute files to directory /opt/IBM/WebSphere/AppServerCommunityEdition/var/config at org.apache.geronimo.system.configuration.LocalAttributeManager.ensureParentDirectory(LocalAttributeManager.java:573) at org.apache.geronimo.system.configuration.LocalAttributeManager.load(LocalAttributeManager.java:327) .... I was wondering if anyone had experience with this particular issue?

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  • Workaround for abstract attributes in Java

    - by deamon
    In Scala I would write an abstract class with an abstract attribute path: abstract class Base { val path: String } class Sub extends Base { override val path = "/demo/" } Java doesn't know abstract attributes and I wonder what would be the best way to work around this limitation. My ideas: a) constructor parameter abstract class Base { protected String path; protected Base(String path) { this.path = path; } } class Sub extends Base { public Sub() { super("/demo/"); } } b) abstract method abstract class Base { // could be an interface too abstract String getPath(); } class Sub extends Base { public String getPath() { return "/demo/"; } } Which one do you like better? Other ideas? I tend to use the constructor since the path value should not be computed at runtime.

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  • Can't get results from a IQueryable.

    - by StackPointer
    Hi! I have the following code in Linq to Entity: var policy= from pol in conn.Policy where pol.Product.DESCRIPTION=="someProduct" SELECT pol; Then, the table Policy, has some dependencies for a table called Entity. If I do this: foreach(Policy p in policy){ if(!p.Entity.IsLoaded) p.Entity.Load(); IEnumerable<Entity> entities= from ent in p.Entity Where ent.EntityType.DESCRIPTION=="SomeEntityType" select ent; Console.Writeline(entities.ElementAt(0).NAME); } It says, "Object not set to an instance", but if I do: foreach(Policy p in policy){ if(!p.Entity.IsLoaded) p.Entity.Load(); foreach(Entity et in p.Entity)Console.Write(et.NAME); } It works! Can anyone tell me why? Thank you, Best regards.

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  • .net MVC 3 multiple columns

    - by Teodor
    i want to display a list in more columns with 5 items/column my code now doesn't work as expected: @{ var c=0; } <div > @foreach (var item in Model) { c += 1; @Html.ActionLink(item.Judet , "Browse", new { judet = item.Judet }) <br /> if (c == 5){ Response.Write("</div><div style='border: 1px solid red;'>"); c = 0; } } </div>

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  • What are the typical reasons Javascript developed on Firefox fails on IE?

    - by karlthorwald
    I developed some javascript enhanced pages that run fine on recent Firefox and Safari. I missed to check in Internet Explorer, and now I find the pages don't work on IE 6 and 7 (so far). The scripts are somehow not executed, the pages show as if javascript wasn't there, although some javascript is executed. I am using own libraries with dom manipulation, from YUI 2 I use YUI-Loader and the XML-Http-Request, and on one page I use "psupload", which depends on JQuery. I am installing Microsoft Script Editor from Office XP and will now debug. I will also write specific tests now. What are the typical failing points of IE? What direction I can keep my eyes open. I found this page, which shows some differences: http://www.quirksmode.org/compatibility.html Can you from your experience name some typical things I should look for first? I will also ask more questions here for specific tasks later, but for now I am interested in your experience why IE usually fails on scripts that run fine in Firefox

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  • best practice for passing many arguments to method ?

    - by Tony
    Occasionally , we have to write methods that receive many many arguments , for example : public void doSomething(Object objA , Object objectB ,Date date1 ,Date date2 ,String str1 ,String str2 ) { } When I encounter this kind of problem , I often encapsulate arguments into a map. Map<Object,Object> params = new HashMap<Object,Object>(); params.put("objA",ObjA) ; ...... public void doSomething(Map<Object,Object> params) { // extracting params Object objA = (Object)params.get("objA"); ...... } This is not a good practice , encapsulate params into a map is totally a waste of efficiency. The good thing is , the clean signature , easy to add other params with fewest modification . what's the best practice for this kind of problem ?

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