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• Can rpmbuild ingore files in buildroot?

  - by Noah Campbell

  I have a target directory that is checked into svn. I use the target as the --buildroot when I run rpmbuild. This causes rpmbuild to loose it mind because of the .svn directories in each directory. Is there a way to tell rpmbuild to relax? I looked at svn export target target-build, but it only knows about files tracked by rpm. Perhaps not a bad way to do it, but I'm not quite sure that is the best way.

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• Filter chain halted as [:login_required] rendered_or_redirected

  - by Magicked

  Hopefully I can explain this well enough, but please let me know if more information is needed! I'm building a form where a user can create an "incident". This incident has the following relationships: belongs_to: customer (customer has_many incidents) belongs_to: user (user has_many incidents) has_one: incident_status (incident_status belongs to incident) The form allows the user to assign the incident to a user (select form) and then select an incident status. The incident is nested in customer. However, I'm getting the following in the server logs: Processing IncidentsController#create (for 127.0.0.1 at 2010-04-26 10:41:33) [POST] Parameters: {"commit"=>"Create", "action"=>"create", "authenticity_token"=>"YhW++vd/dnLoNV/DSl1DULcaWq/RwP7jvLOVx9jQblA=", "customer_id"=>"4", "controller"=>"incidents", "incident"=>{"title"=>"Some Bad Incident", "incident_status_id"=>"1", "user_id"=>"2", "other_name"=>"SS01-042310-001"}} User Load (0.3ms) SELECT * FROM "users" WHERE ("users"."id" = 2) LIMIT 1 Redirected to http://localhost:3000/session/new Filter chain halted as [:login_required] rendered_or_redirected. Completed in 55ms (DB: 0) | 302 Found [http://localhost/customers/4/incidents] It looks to me like it's trying to gather information about the user, even though it already has the id (which is all it needs to create the incident), and the user may not have permission to do a select statement like that? I'm rather confused. Here is the relevant (I think) information in the Incident controller. before_filter :login_required, :get_customer def new @incident = @customer.incidents.build @users = @customer.users @statuses = IncidentStatus.find(:all) respond_to do |format| format.html # new.html.erb format.xml { render :xml => @incident } end end def create @incident = @customer.incidents.build(params[:incident]) respond_to do |format| if @incident.save flash[:notice] = 'Incident was successfully created.' format.html { redirect_to(@incident) } format.xml { render :xml => @incident, :status => :created, :location => @incident } else format.html { render :action => "new" } format.xml { render :xml => @incident.errors, :status => :unprocessable_entity } end end end Just as an FYI, I am using the restful_authentication plugin. So in summary, when I submit the incident creation form, it does not save the incident because it halts. I'm still very new to rails, so my skill at diagnosing problems like this is still very bad. I'm going in circles. :) Thanks in advance for any help. Please let me know if more information is needed and I'll edit it in!

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• Computer science final year project ideas

  - by roul

  I'm a Computer Science undergraduate student in UK and should be deciding the subject of my final year project soon. The school is pretty flexible with the subject... "The topic can be any area of the subject which is of mutual interest to both the student and supervisor. Topics can range from purely theoretical studies to practical work building a system for some third party, although most projects aim to provide a balance between the theoretical and practical aspects of the subject." ...so I'm a bit lost since I want to do something in software engineering but have no idea what (subject) or with what (languages)! :) a) Languages: I've had experience with Java, C# and ASP.NET mostly but I would definitely be interested in learning new languages/frameworks. I'm kind of drawn by the idea of dynamic languages at the moment so IronPython seems likely. b) Subject: Anything that will keep me interested through the year and will give me the opportunity to learn a lot of stuff. Maybe something that has to do with music, or a fancy website, or a website about music :P anything really. Open to any thoughts/ideas, geeky or cool! Edit: Professors do usually supervise projects in their research areas but I currently have the choice to approach any of them according to my interest - whatever that is.

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• WPF: ListView inside LIstViewItem: How to support button_click

  - by Bartek

  Hi I have problem with using buttons that are placed in the itemtemplate of the listview which is placed in the itemtemplate of the outer listview. I'll try to simplify the code to show only the idea. I have a objects collection which looks like this: Main object contains a list of innerObjects. Every innerObject contains a list of objects that contain some strings. mainObject listItem innerListItem string string innerListItem string string listItem innerListItem string string I set a mainObject as a itemsSource to the ListView. This listView has a ItemTemplate. This ItemTemplate contains some buttons and inner ListView. Inner ListView also has the item template that contains a button (deleteButton). Pressing this deleteButton I want to delete items (innerListItem) for which this button was created. I can use such functionality when I have a sigle listView. private void clearAndList_Click(object sender, RoutedEventArgs e) { DependencyObject dep = (DependencyObject)e.OriginalSource; while ((dep != null) && !(dep is System.Windows.Controls.ListViewItem)) { dep = VisualTreeHelper.GetParent(dep); } if (dep == null) { return; } ANDconditionsList andList = (ANDconditionsList)ConditionsList.ItemContainerGenerator.ItemFromContainer(dep); orConditionsList.RemoveConditionsSet(andList); } I can't use the same functionality because I can only use the name of the ConditionsList which is the mail listview. The idea is to find the innerlistview and use it instead of ConditionsList, however I don't know if it will work. If anyone have some samples concerning using listview in listview or how to operate the button in a different way please help me

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• format ugly c# source code

  - by Fred F.

  I found a C# game http://www.codeproject.com/KB/game/BattleField.aspx that does what I need to learn. The source code is not formatted good and hard to follow. I used visual studios format document, but the format is still bad. How do I reformat the source code to make it easer to read?

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• Django: How to get current user in admin forms

  - by lazerscience

  In Django's ModelAdmin I need to display forms customized according to the permissions an user has. Is there a way of getting the current user object into the form class, so that i can customize the form in its __init__ method? I think saving the current request in a thread local would be a possibility but this would be my last resort think I'm thinking it is a bad design approach....

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• How to disable personal contact form option in drupal user account creation.

  - by Behrooz Karjooravary

  I am a drupal beginner. When a user creates his account he/she has the option to have a personal contact form. Where do I go to disable that? It's not in permissions. It's not a bad option but I know it will confuse the hell out of my site's users. It may even scare some away!

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• Haskell newbie on types

  - by garulfo

  I'm completely new to Haskell (and more generally to functional programming), so forgive me if this is really basic stuff. To get more than a taste, I try to implement in Haskell some algorithmic stuff I'm working on. I have a simple module Interval that implements intervals on the line. It contains the type data Interval t = Interval t t the helper function makeInterval :: (Ord t) => t -> t -> Interval t makeInterval l r | l <= r = Interval l r | otherwise = error "bad interval" and some utility functions about intervals. Here, my interest lies in multidimensional intervals (d-intervals), those objects that are composed of d intervals. I want to separately consider d-intervals that are the union of d disjoint intervals on the line (multiple interval) from those that are the union of d interval on d separate lines (track interval). With distinct algorithmic treatments in mind, I think it would be nice to have two distinct types (even if both are lists of intervals here) such as import qualified Interval as I -- Multilple interval newtype MInterval t = MInterval [I.Interval t] -- Track interval newtype TInterval t = TInterval [I.Interval t] to allow for distinct sanity checks, e.g. makeMInterval :: (Ord t) => [I.Interval t] -> MInterval t makeMInterval is = if foldr (&&) True [I.precedes i i' | (i, i') <- zip is (tail is)] then (MInterval is) else error "bad multiple interval" makeTInterval :: (Ord t) => [I.Interval t] -> TInterval t makeTInterval = TInterval I now get to the point, at last! But some functions are naturally concerned with both multiple intervals and track intervals. For example, a function order would return the number of intervals in a multiple interval or a track interval. What can I do? Adding -- Dimensional interval data DInterval t = MIntervalStuff (MInterval t) | TIntervalStuff (TInterval t) does not help much, since, if I understand well (correct me if I'm wrong), I would have to write order :: DInterval t -> Int order (MIntervalStuff (MInterval is)) = length is order (TIntervalStuff (TInterval is)) = length is and call order as order (MIntervalStuff is) or order (TIntervalStuff is) when is is a MInterval or a TInterval. Not that great, it looks odd. Neither I want to duplicate the function (I have many functions that are concerned with both multiple and track intevals, and some other d-interval definitions such as equal length multiple and track intervals). I'm left with the feeling that I'm completely wrong and have missed some important point about types in Haskell (and/or can't forget enough here about OO programming). So, quite a newbie question, what would be the best way in Haskell to deal with such a situation? Do I have to forget about introducing MInterval and TInterval and go with one type only? Thanks a lot for your help, Garulfo

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• How can I add headers to DualList control wpf

  - by devnet247

  Hi all I am trying to write a Dual List usercontrol in wpf. I am new to wpf and I am finding it quite difficult. This is something I have put together in a couple of hours.It's not that good but a start. I would be extremely grateful if somebody with wpf experience could improve it. The aim is to simplify the usage as much as possible I am kind of stuck. I would like the user of the DualList Control to be able to set up headers how do you do that. Do I need to expose some dependency properties in my control? At the moment when loading the user has to pass a ObservableCollection is there a better way? Could you have a look and possibly make any suggestions with some code? Thanks a lot!!!!! xaml <Grid ShowGridLines="False"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*"/> <ColumnDefinition Width="25px"></ColumnDefinition> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="*"></RowDefinition> </Grid.RowDefinitions> <StackPanel Orientation="Vertical" Grid.Column="0" Grid.Row="0"> <Label Name="lblLeftTitle" Content="Available"></Label> <ListView Name="lvwLeft"> </ListView> </StackPanel> <WrapPanel Grid.Column="1" Grid.Row="0"> <Button Name="btnMoveRight" Content=">" Width="25" Margin="0,35,0,0" Click="btnMoveRight_Click" /> <Button Name="btnMoveAllRight" Content=">>" Width="25" Margin="0,05,0,0" Click="btnMoveAllRight_Click" /> <Button Name="btnMoveLeft" Content="&lt;" Width="25" Margin="0,25,0,0" Click="btnMoveLeft_Click" /> <Button Name="btnMoveAllLeft" Content="&lt;&lt;" Width="25" Margin="0,05,0,0" Click="btnMoveAllLeft_Click" /> </WrapPanel> <StackPanel Orientation="Vertical" Grid.Column="2" Grid.Row="0"> <Label Name="lblRightTitle" Content="Selected"></Label> <ListView Name="lvwRight"> </ListView> </StackPanel> </Grid> Client public partial class DualListTest { public ObservableCollection<ListViewItem> LeftList { get; set; } public ObservableCollection<ListViewItem> RightList { get; set; } public DualListTest() { InitializeComponent(); LoadCustomers(); LoadDualList(); } private void LoadDualList() { dualList1.Load(LeftList, RightList); } private void LoadCustomers() { //Pretend we are getting a list of Customers from a repository. //Some go in the left List(Good Customers) some go in the Right List(Bad Customers). LeftList = new ObservableCollection<ListViewItem>(); RightList = new ObservableCollection<ListViewItem>(); var customers = GetCustomers(); foreach (var customer in customers) { if (customer.Status == CustomerStatus.Good) { LeftList.Add(new ListViewItem { Content = customer }); } else { RightList.Add(new ListViewItem{Content=customer }); } } } private static IEnumerable<Customer> GetCustomers() { return new List<Customer> { new Customer {Name = "Jo Blogg", Status = CustomerStatus.Good}, new Customer {Name = "Rob Smith", Status = CustomerStatus.Good}, new Customer {Name = "Michel Platini", Status = CustomerStatus.Good}, new Customer {Name = "Roberto Baggio", Status = CustomerStatus.Good}, new Customer {Name = "Gio Surname", Status = CustomerStatus.Bad}, new Customer {Name = "Diego Maradona", Status = CustomerStatus.Bad} }; } } UserControl public partial class DualList:UserControl { public ObservableCollection<ListViewItem> LeftListCollection { get; set; } public ObservableCollection<ListViewItem> RightListCollection { get; set; } public DualList() { InitializeComponent(); } public void Load(ObservableCollection<ListViewItem> leftListCollection, ObservableCollection<ListViewItem> rightListCollection) { LeftListCollection = leftListCollection; RightListCollection = rightListCollection; lvwLeft.ItemsSource = leftListCollection; lvwRight.ItemsSource = rightListCollection; EnableButtons(); } public static DependencyProperty LeftTitleProperty = DependencyProperty.Register("LeftTitle", typeof(string), typeof(Label)); public static DependencyProperty RightTitleProperty = DependencyProperty.Register("RightTitle", typeof(string), typeof(Label)); public static DependencyProperty LeftListProperty = DependencyProperty.Register("LeftList", typeof(ListView), typeof(DualList)); public static DependencyProperty RightListProperty = DependencyProperty.Register("RightList", typeof(ListView), typeof(DualList)); public string LeftTitle { get { return (string)lblLeftTitle.Content; } set { lblLeftTitle.Content = value; } } public string RightTitle { get { return (string)lblRightTitle.Content; } set { lblRightTitle.Content = value; } } public ListView LeftList { get { return lvwLeft; } set { lvwLeft = value; } } public ListView RightList { get { return lvwRight; } set { lvwRight = value; } } private void EnableButtons() { if (lvwLeft.Items.Count > 0) { btnMoveRight.IsEnabled = true; btnMoveAllRight.IsEnabled = true; } else { btnMoveRight.IsEnabled = false; btnMoveAllRight.IsEnabled = false; } if (lvwRight.Items.Count > 0) { btnMoveLeft.IsEnabled = true; btnMoveAllLeft.IsEnabled = true; } else { btnMoveLeft.IsEnabled = false; btnMoveAllLeft.IsEnabled = false; } if (lvwLeft.Items.Count != 0 || lvwRight.Items.Count != 0) return; btnMoveLeft.IsEnabled = false; btnMoveAllLeft.IsEnabled = false; btnMoveRight.IsEnabled = false; btnMoveAllRight.IsEnabled = false; } private void MoveRight() { while (lvwLeft.SelectedItems.Count > 0) { var selectedItem = (ListViewItem)lvwLeft.SelectedItem; LeftListCollection.Remove(selectedItem); RightListCollection.Add(selectedItem); } lvwRight.ItemsSource = RightListCollection; lvwLeft.ItemsSource = LeftListCollection; EnableButtons(); } private void MoveAllRight() { while (lvwLeft.Items.Count > 0) { var item = (ListViewItem)lvwLeft.Items[lvwLeft.Items.Count - 1]; LeftListCollection.Remove(item); RightListCollection.Add(item); } lvwRight.ItemsSource = RightListCollection; lvwLeft.ItemsSource = LeftListCollection; EnableButtons(); } private void MoveAllLeft() { while (lvwRight.Items.Count > 0) { var item = (ListViewItem)lvwRight.Items[lvwRight.Items.Count - 1]; RightListCollection.Remove(item); LeftListCollection.Add(item); } lvwRight.ItemsSource = RightListCollection; lvwLeft.ItemsSource = LeftListCollection; EnableButtons(); } private void MoveLeft() { while (lvwRight.SelectedItems.Count > 0) { var selectedCustomer = (ListViewItem)lvwRight.SelectedItem; LeftListCollection.Add(selectedCustomer); RightListCollection.Remove(selectedCustomer); } lvwRight.ItemsSource = RightListCollection; lvwLeft.ItemsSource = LeftListCollection; EnableButtons(); } private void btnMoveLeft_Click(object sender, RoutedEventArgs e) { MoveLeft(); } private void btnMoveAllLeft_Click(object sender, RoutedEventArgs e) { MoveAllLeft(); } private void btnMoveRight_Click(object sender, RoutedEventArgs e) { MoveRight(); } private void btnMoveAllRight_Click(object sender, RoutedEventArgs e) { MoveAllRight(); } }

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• To static or not to static

  - by Idsa

  I really like to use static methods (especially for helpers classes). But as static methods are not stubbable, eventually they are a bad practice, aren't they? So I have to choose between static methods usage convenience and testability. Is there any compromise?

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• Code Complete 2ed, composition and delegation.

  - by Arlukin

  Hi there. After a couple of weeks reading on this forum I thought it was time for me to do my first post. I'm currently rereading Code Complete. I think it's 15 years since the last time, and I find that I still can't write code ;-) Anyway on page 138 in Code Complete you find this coding horror example. (I have removed some of the code) class Emplyee { public: FullName GetName() const; Address GetAddress() const; PhoneNumber GetWorkPhone() const; ... bool IsZipCodeValid( Address address); ... private: ... } What Steve thinks is bad is that the functions are loosely related. Or has he writes "There's no logical connection between employees and routines that check ZIP codes, phone numbers or job classifications" Ok I totally agree with him. Maybe something like the below example is better. class ZipCode { public: bool IsValid() const; ... } class Address { public: ZipCode GetZipCode() const; ... } class Employee { public: Address GetAddress() const; ... } When checking if the zip is valid you would need to do something like this. employee.GetAddress().GetZipCode().IsValid(); And that is not good regarding to the Law of Demeter ([http://en.wikipedia.org/wiki/Law_of_Demeter][1]). So if you like to remove two of the three dots, you need to use delegation and a couple of wrapper functions like this. class ZipCode { public: bool IsValid(); } class Address { public: ZipCode GetZipCode() const; bool IsZipCodeValid() {return GetZipCode()->IsValid()); } class Employee { public: FullName GetName() const; Address GetAddress() const; bool IsZipCodeValid() {return GetAddress()->IsZipCodeValid()); PhoneNumber GetWorkPhone() const; } employee.IsZipCodeValid(); But then again you have routines that has no logical connection. I personally think that all three examples in this post are bad. Is it some other way that I haven't thougt about? //Daniel

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• catching a deadlock in a simple odd-even sending

  - by user562264

  I'm trying to solve a simple problem with MPI, my implementation is MPICH2 and my code is in fortran. I have used the blocking send and receive, the idea is so simple but when I run it it crashes!!! I have absolutely no idea what is wrong? can anyone make quote on this issue please? there is a piece of the code: integer,parameter::IM=100,JM=100 REAL,ALLOCATABLE ::T(:,:),TF(:,:) CALL MPI_COMM_RANK(MPI_COMM_WORLD,RNK,IERR) CALL MPI_COMM_SIZE(MPI_COMM_WORLD,SIZ,IERR) prv = rnk-1 nxt = rnk+1 LIM = INT(IM/SIZ) IF (rnk==0) THEN ALLOCATE(TF(IM,JM)) prv = MPI_PROC_NULL ELSEIF(rnk==siz-1) THEN NXT = MPI_PROC_NULL LIM = LIM+MOD(IM,SIZ) END IF IF (MOD(RNK,2)==0) THEN CALL MPI_SEND(T(2,:),JM+2,MPI_REAL,PRV,10,MPI_COMM_WORLD,IERR) CALL MPI_RECV(T(1,:),JM+2,MPI_REAL,PRV,20,MPI_COMM_WORLD,STAT,IERR) ELSE CALL MPI_RECV(T(LIM+2,:),JM+2,MPI_REAL,NXT,10,MPI_COMM_WORLD,STAT,IERR) CALL MPI_SEND(T(LIM+1,:),JM+2,MPI_REAL,NXT,20,MPI_COMM_WORLD,IERR) END IF as I understood even processes are not receiving anything while the odd ones finish sending successfully, in some cases when I added some print to observe what is going on I saw that the variable NXT is changing during the sending procedure!!! for example all the odd process was sending message to process 0 not their next one!

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• Allowed unicode characters in IDN host labels

  - by Roland Franssen

  Hi all, Im currently working on a "proper" URI validator and currently it all comes down to hostname validation, the rest isnt that tricky. Im stuck at IDN hostname labels (e.g. containing unicode; possible punycode encoded strings have been decoded at this point). My first idea was basicly a regex for TLD's not supporting IDN and one for those who do (http://www.mozilla.org/projects/security/tld-idn-policy-list.html (?)). Respectively; ^[a-zA-Z0-9-]+$ and ^[a-zA-Z0-9-\p{L}]+$ However this is not an ideal situation, since every IDN registrar can decide which characters to allow and which not. What im looking for is a proper, consistent, up2date data table of unicode characters allowed in various TLD's; im getting this idea i have to find all the data myself at russian and chinese registry sites (which is quite difficult). So before spitting down the web.. i wondered is there such a list? Or are there better approaches, best/common practices etc? (I want the validation to be as strict as possible.) Any help is welcome! // Roland

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• Using Valgrind tool how can I detect which object trying to access 0x0 address ?

  - by Davit Siradeghyan

  I have this output when trying to debug Program received signal SIGSEGV, Segmentation fault 0x43989029 in std::string::compare (this=0x88fd430, __str=@0xbfff9060) at /home/devsw/tmp/objdir/i686-pc-linux-gnu/libstdc++-v3/include/bits/char_traits.h:253 253 { return memcmp(__s1, __s2, __n); } Current language: auto; currently c++ Using valgrind I getting this output ==12485== Process terminating with default action of signal 11 (SIGSEGV) ==12485== Bad permissions for mapped region at address 0x0 ==12485== at 0x1: (within path_to_my_executable_file/executable_file)

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• Why is my code signing (MS authenticode) verification failing?

  - by Tim

  I posted this question and have a freshly minted code signing cert from Thawte. I followed the instructions (or so I thought) and the code signing claims to be done right, however when I try to verify the tool shows an error. I have no idea what it means and no idea how to fix this. Any comments would be appreciated. Command line to sign exe: signtool sign /f mdt.pfx /p password /t http://timestamp.verisign.com/scripts/timstamp.dll test.exe Results: The following certificate was selected: Issued to: [my company] Issued by: Thawte Code Signing CA Expires: 4/23/2011 7:59:59 PM SHA1 hash: 7D1A42364765F8969E83BC00AB77F901118F3601 Done Adding Additional Store Attempting to sign: test.exe Successfully signed and timestamped: test.exe Number of files successfully Signed: 1 Number of warnings: 0 Number of errors: 0 Note that there are no errors or warnings. Now, when I try to verify imagine my surprise: signtool verify /v test.exe results in: Verifying: test.exe SHA1 hash of file: 490BA0656517D3A322D19F432F1C6D40695CAD22 Signing Certificate Chain: Issued to: Thawte Premium Server CA Issued by: Thawte Premium Server CA Expires: 12/31/2020 7:59:59 PM SHA1 hash: 627F8D7827656399D27D7F9044C9FEB3F33EFA9A Issued to: Thawte Code Signing CA Issued by: Thawte Premium Server CA Expires: 8/5/2013 7:59:59 PM SHA1 hash: A706BA1ECAB6A2AB18699FC0D7DD8C7DE36F290F Issued to: [my company] Issued by: Thawte Code Signing CA Expires: 4/23/2011 7:59:59 PM SHA1 hash: 7D1A42364765F8969E83BC00AB77F901118F3601 The signature is timestamped: 4/27/2010 10:19:19 AM Timestamp Verified by: Issued to: Thawte Timestamping CA Issued by: Thawte Timestamping CA Expires: 12/31/2020 7:59:59 PM SHA1 hash: BE36A4562FB2EE05DBB3D32323ADF445084ED656 Issued to: VeriSign Time Stamping Services CA Issued by: Thawte Timestamping CA Expires: 12/3/2013 7:59:59 PM SHA1 hash: F46AC0C6EFBB8C6A14F55F09E2D37DF4C0DE012D Issued to: VeriSign Time Stamping Services Signer - G2 Issued by: VeriSign Time Stamping Services CA Expires: 6/14/2012 7:59:59 PM SHA1 hash: ADA8AAA643FF7DC38DD40FA4C97AD559FF4846DE Number of files successfully Verified: 0 Number of warnings: 0 Number of errors: 1

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• function getting wrong values

  - by frankie

  so i have this function in C to calculate a power, and i'm using visual c++ 2010 power.h void power(); float get_power(float a, int n); power.c void power() { float a, r; int n; printf("-POWER-\n"); printf("The base: "); scanf("%f", &a); n = -1; while (n < 0) { printf("The power: "); scanf("%d", &n); if (n < 0) { printf("Power must be equal or larger than 0!\n"); } else { r = get_power(a, n); printf("%.2f ^ %d = %.2f", a, n, r); } }; } float get_power(float a, int n) { if (n == 0) { return 1; } return a * get_power(a, n-1); } not the best way to do it, i know, but that's not it when i debug it the values are scanned correctly (that is, the values are correct until just before the function call) but then upon entering the function a becomes 0 and n becomes 1074790400, and you can guess what happens next... the first function is being called from the main file, i included the full code because i really have no idea what could be going on, and i can't even think on how to google for it... strangely, i wrote the function in a single file and it works fine, but it definitely should work both ways any idea why this is happening?

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• How to send raw data over a network?

  - by youllknow

  Hi everyone! I've same data stored in a byte-array. The data contains a IPv4 packet (which contains a udp-packet). I want to send these array raw over the network using C# (preferred) or C++. I don't want to use C#'s udp-client for example. Does anyone know how to perform this? Sorry for my bad English and thanks for your help in advance!!!

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• What Issue Tracking System to select?

  - by Mikee

  What Issue Tracking Sytem is the most appropriate for fast, big, multilingual and international websites? The system has to handle both technical and content/editorial issues. What's the size and type of your site do you run? Whart System are you using for the keeping it state of the art? Thanks a lot for sharing your good or bad experience.

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• Best practices for model driven development using LiveCycle Data Services

  - by Adnan

  What are your advises on using model driven development in developing enterprise applications. Adobe's LiveCycle Data Services looks very promising, I have found numerous tutorials/videos that shows how fast an application can be build by having methods/functions auto-generated. What are the best-practices, is it good/bad to use those auto-generated methods, they can really save a lot of time. All suggestions are welcome, also if you know some existing blog/discussion please let me know.

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• Problem in setting path for android sdk in ubuntu

  - by piemesons

  export PATH=${/home/mohit/}:<android-sdk-linux_86>/tools this is what i am using.. error:-- bash: PATH=${/home/mohit/}:: bad substitution this is the path of sdk mohit@mohit-laptop:~/android-sdk-linux_86$ pwd /home/mohit/android-sdk-linux_86

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• ACL architechture for a Software As a service in Spring 3.0

  - by geoaxis

  I am making a software as a service using Spring 3.0 (Spring MVC, Spring Security, Spring Roo, Hibernate) I have to come up with a flexible access control list mechanism.I have three different kinds of users System (who can do any thing to the system, includes admin and internal daemons) Operations (who can add and delete users, organizations, and do maintenance work on behalf of users and organizations) End Users (they belong to one or more organization, for each organization, the user can have one or more roles, like being organization admin, or organization read-only member) (role like orgadmin can also add users for that organization) Now my question is, how should i model the entity of User? If I just take the End User, it can belong to one or more organizations, so each user can contain a set of references to its organizations. But how do we model the users role for each organization, So for example User UX belongs to organizations og1, og2 and og3, and for og1 he is both orgadmin, and org-read-only-user, where as for og2 he is only orgadmin and for og3 he is only org-read-only-user I have the possibility of making each user belong to one organization alone, but that's making the system bounded and I don't like that idea (although i would still satisfy the requirement) If you have a better extensible ACL architecture, please suggest it. Since its a software as a service, one would expect that alot of different organizations would be part if the same system. I had one concern that it is not a good idea to keep og1 and og2 data on the same DB (if og1 decides to spawn a 100 reports on the system, og2 should not suffer) But that is some thing advanced for now and is not directly related to ACL but to the physical distribution of data and setup of services based on those ACLs This is a community Wiki question, please correct any thing which you wish to do so. Thanks

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• New to Linux Kernel/Driver development...

  - by CVS-2600Hertz-wordpress-com

  Recently, i began developing a driver of an embedded device running linux. Until now i have only read about linux internals. Having no prior experience in driver devlopment, i am finding it a tad difficult to land my first step. I have downloaded the kernel source-code (v2.6.32). I have read (skimped) Linux Device Drivers (3e) I read a few related posts here on StackOverflow. I understand that linux has a "monolithic" approach. I have built kernel (included existing driver in menuconfig etc.) I know the basics of kconfig and makefile files so that should not be a problem. Can someone describe the structure (i.e. the inter-links) of the various folders in the kernel-source code. In other words given a source-code file, which other files would it refer to for related code (The "#include"-s provide a partial idea) Could someone please help me in getting a better idea? Any help will be greatly appreciated Thank You.

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• best practice for directory polling

  - by Hieu Lam

  Hi all, I have to do batch processing to automate business process. I have to poll directory at regular interval to detect new files and do processing. While old files is being processed, new files can come in. For now, I use quartz scheduler and thread synchronization to ensure that only one thread can process files. Part of the code are: application-context.xml <bean id="methodInvokingJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean" <property name="targetObject" ref="documentProcessor" / <property name="targetMethod" value="processDocuments" / </bean DocumentProcessor ..... public void processDocuments() { LOG.info(Thread.currentThread().getName() + " attempt to run."); if (!processing) { synchronized (this) { try { processing = true; LOG.info(Thread.currentThread().getName() + " is processing"); List xmlDocuments = documentManager.getFileNamesFromFolder(incomingFolderPath); // loop over the files and processed unlock files. for (String xmlDocument : xmlDocuments) { processDocument(xmlDocument); } } finally { processing = false; } } } } For the current code, I have to prevent other thread to process files when one thread is processing. Is that a good idea ? or we support multi-threaded processing. In that case how can I know which files is being process and which files has just arrived ? Any idea is really appreciated.

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• Migrating data from Plone to Liferay, or how could I retrieve information from Plone's Data.fs

  - by brandizzi

  Hello, all. I need to migrate data from a Plone-based portal to Liferay. Has anyone some idea on how to do it? Anyway, I am trying to retrieve data from Data.fs and store it in a representation easier to work, such as JSON. To do it, I need to know which objects I should get from Plone's Data.fs. I already got the Products.CMFPlone.Portal.PloneSite instance from the Data.fs, but I cannot get anything from it. I would like to get the PloneSite instance and do something like this: >>> import ZODB >>> from ZODB import FileStorage, DB >>> path = r"C:\Arquivos de programas\Plone\var\filestorage\Data.fs" >>> storage = FileStorage.FileStorage(path) >>> db = DB(storage) >>> conn = db.open() >>> root = conn.root() >>> app = root['Application'] >>> plone_site = app.getChildNodes()[13] # 13 would be index of PloneSite object >>> a = plone_site.get_articles() >>> for article in a: ... print "Title:", a.title ... print "Content:", a.content Title: <some title> Conent: <some content> Title: <some title> Conent: <some content> Of course, it did not need to be so straightforward. I just want some information about the structure of PloneSite and how to recover its data. Has anyone some idea? Thank you in advance!

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• Is there something like a "long running offline transaction" for NHibernate or any other ORM?

  - by Vilx-

  In essence this is a followup of this question. I'm beginning to feel that I should give up the whole idea, but I'll give it one more shot. What I want is pretty much like a DB transaction. It should track my changes to the DB and then in the end allow me to either commit or rollback them. If I insert an object, I should get it back in my next (appropriate) SELECT query. If I delete it, future SELECT queries should not return it. Etc. But there is one catch - this transaction would be very long running. It would start when the user opened a form (I'm talking about Windows Forms here), and the commit/rollback would be when the user closed it(with OK/Cancel). So it could take anywhere between seconds and days. This requirement rules out a standard DB transaction because that would lock the tables/rows it touched, and other users wouldn't be able to use the system. Also the transaction should not commit ANY changes to the DB until it was really committed. So if one user makes some changes, others don't see them until OK button is hit. This prevents errors in case the computer crashes or is disconnected from the network. I'm quite OK if the solution puts constraints on my model (I'm using MSSQL 2008, btw). I can design the DB/code any way I like. I'm also fine with the idea that a commit could fail because someone already modified one of the objects my transaction touched. Is there anything like this? I looked at NHibernate.Burrow, but I'm not sure that that's the thing I want. Added: It's the very beginning of the project so I'm not tied to NHibernate. I started out with it but I can still change easily.

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