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  • Function pointer demo

    - by AKN
    Hi, Check the below code void functionptrdemo() { typedef int *(funcPtr) (int,int); funcPtr ptr; ptr = add; //IS THIS CORRECT? (*ptr)(2,3); } In the place where I try to assign a function to function ptr with same function signature, it shows a compilation error as error C2659: '=' : function as left operand

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  • ClassCastExcpetion Linq to SQL

    - by BitFiddler
    I have a column definition in my generated Dbml file: <Column(Storage:="_Low", DbType:="Decimal(18,2)", UpdateCheck:=UpdateCheck.WhenChanged)> Public Property Low() As System.Nullable(Of Decimal) When I try to assign: With someObject .Low = 21.33D End With I get a ClassCastException when I call db_context.SubmitChanges(). Anyone have an idea why this is? Thanks

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  • Assigning keyboard shortcut to get path of selected item in windows explorer

    - by Juha
    I don't know if this is even possible, but how can I bind some key combination to a (C#)program, so that when that keyboard shortcut is pressed with some file selected in windows explorer, it calls specific function with path of that file as a parameter. Or can I assign some keyboard shortcut so that windows explorer opens selected file in my program(that way I could pass the path to already running instance) thanks

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  • Vim + OmniCppComplete: Completing on Class Members which are STL containers

    - by Robert S. Barnes
    Completion on class members which are STL containers is failing. Completion on local objects which are STL containers works fine. For example, given the following files: // foo.h #include <string> class foo { public: void set_str(const std::string &); std::string get_str_reverse( void ); private: std::string str; }; // foo.cpp #include "foo.h" using std::string; string foo::get_str_reverse ( void ) { string temp; temp.assign(str); reverse(temp.begin(), temp.end()); return temp; } /* ----- end of method foo::get_str ----- */ void foo::set_str ( const string &s ) { str.assign(s); } /* ----- end of method foo::set_str ----- */ I've generated the tags for these two files using: ctags -R --c++-kinds=+pl --fields=+iaS --extra=+q . When I type temp. in the cpp I get a list of string member functions as expected. But if I type str. omnicppcomplete spits out "Pattern Not Found". I've noticed that the temp. completion only works if I have the using std::string; declaration. How do I get completion to work on my class members which are STL containers? Edit I found that completion on members which are STL containers works if I make the follow modifications to the header: // foo.h #include <string> using std::string; class foo { public: void set_str(const string &); string get_str_reverse( void ); private: string str; }; Basically, if I add using std::string; and then remove the std:: name space qualifier from the string str; member and regenerate the tags file then OmniCppComplete is able to do completion on str.. It doesn't seem to matter whether or not I have let OmniCpp_DefaultNamespaces = ["std", "_GLIBCXX_STD"] set in the .vimrc. The problem is that putting using declarations in header files seems like a big no-no, so I'm back to square one.

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  • What happens when several Java servlet apps running on the same port ?

    - by Frank
    Something strange happened to my servlets and I think I've figured out why, yet I'm more confused. I used Netbean6.7 to develop a Paypal IPN (Instant Payment Notification) message servlet, it listens on port 8080 by default for Paypal IPN messages. I used some sample Java code from it's web site, but when it ran, only about 1 in 10 messages came through, and they looked correct, but why 1 in 10 ? Not 100% or none ? So I asked some questions here and got some advices, one in particular points me to Google's App Engine, so I downloaded it and ran the demo guestbook while my IPN servlet is still running on Netbeans, the strange thing happened, after I entered "appengine-java-sdk-1.3.2\bin\dev_appserver.cmd appengine-java-sdk-1.3.2\demos\guestbook\war" from the command prompt, I went to the following url on my browser "http://localhost:8080/", I thought I would see the Google demo guestbook page, NO, what I saw was another servlet I developed 2 years ago : "Web Academy", online course registration app. How can that happen ? I never started it, and I haven't touch that project for years. I guess because it's also listening on port 8080, so now I understand why the IPN messages only came through 1 in 10 times, because another servlet was also listening on that port and could have got the messages intended for IPN, or some how those two servlets' processes mixed up and therefore couldn't respond to Paypal properly, and failed. In order to verify some of my guesses, I turn off Netbeans, and ran the Google guestbook again at the prompt, this time on my browser http://localhost:8080/ points to the demo guestbook page. My Urls look like this : [A] Paypal IPN : http://localhost:8080/PayPal_App/PayPal_Servlet [B] Web Academy : http://localhost:8080/ So now, my questions are : <1> Why the "Web Academy" servlet was auto started when I ran the Paypal servlet ? <2> If I change the IPN listening port to 8083, would that mean I can run both of them on my PC at the same time without affecting each other ? <3> But I still don't understand, [A] and [B] look different, if a page for [A] is refreshed, it should show the Paypal content, and another page looking at [B] should show the Web Academy content, and that's exactly what happens when I started Netbeans to run the Paypal servlet, both pages show their respective content correctly side by side without interfering with each other, how come the IPN messages couldn't get through 100% of the time ? <4> In Netbeans how to assign 8080 to servlet [A] and assign port 8083 to servlet [B] ? <5> How to turn off auto start of Web Academy by Netbeans ?

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  • Extract data from an Array

    - by fireBand
    Hello, I have an array DetailsArray in VB.NET which contains the result of a LINQ query. I have shown below the values of the array. i need to get the "ProjectID" from the array and assign it to 'ProjID' variable DetailsArray (0){Name = "TestProject1", ProjectID = 10} Dim ProjID as Integer = DetailsArray(??) How would I do that? Thanks in advance.

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  • Complicted ActiveRecord Association. Going through a 4th table

    - by Dex
    I have kind of a complicated case and am wondering how this would work in rails: I want to categories the genres of some singers. Singers can belong to more than one genres, and users can assign tags to each genre For example: singers <-- singers_genres -- genres <-- genres_tags -- tags SQL would look something like: SELECT * FROM singers S INNER JOIN singers_genres SG ON S.id=SG.singer_id INNER JOIN genres G ON G.id = SG.genre_id LEFT OUTER JOIN genre_tags GT ON G.id = GT.genre_id INNER JOIN tags T ON GT.tag_id = T.id

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  • fetch value of ipaddress

    - by neha soni
    i want to get ipaddress of mycomputer in a variable this statement prints ipaddress of my computer but i want to assign it in a varible how can i fetch the value of ipaddress from inet_ntoa(inaddrr(ifr_addr.sa_data)) into an variable ip of char* type . printf("IP Address: %s\n", inet_ntoa(inaddrr(ifr_addr.sa_data)));

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  • Drupal form with custom ID

    - by Andrew
    Correct me if I'm wrong, after reading drupal fapi related articles, I got the impression that fapi generates 'id' attributes by itself. It allows developers to assign 'name' attribute only. If that's the case, is there a way I can set desire 'id' value for elements? Because, I want my elements to have meaningful 'id' so that html/jquery code would be easier to read as well as save my time from going through already written jquery code to change those all 'id's that I've used inside. P.S:drupal version - 6.x

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  • How does Java handle multithreading?

    - by badcodenotreat
    How does Java decide which core to assign a thread or a process? Is there any way to control that? to prevent two large threads from executing on the same core? Basically what I am asking is for further information on either how multi-threading works in Java, or how to control it within Java.

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  • How can I disable all images for an JFace menu but leave them enabled in the toolbar

    - by David
    If I create a set of actions to be used in a JFace application and I assign images to those actions, those images show up in both the toolbar (where I want them) and in the menus (where I don't want them). Other than supplying two completely separate sets of actions (which eliminates part of the point of actions in the first place), how can I arrange to have those images displayed ONLY in the toolbar, and have the menus display only text?

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  • Adding a custom option using an extension in Magento

    - by Tom
    I'm creating a custom extension and I would like to add a custom option when a certain item is purchased. For example, when the product "Name Tag" is purchased, the extension would detect that the specific product has been ordered and assign a custom option of "Year" to it. The user does not see this, but the attribute is added and displayed in the admin when viewing the order. Are there any specific listeners our there to accomplish this?

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  • Access browser's page zoom controls with javascript

    - by Bob
    I want to assign the browser's (IE/FF) page zoom controls (Menu: View/Zoom/Zoom In_Zoom Out) to two large "(+)(-)" icons on the web page so that vision impaired visitors can use these controls conveniently. A lot of searching for a suitable script came up empty so here I am. Any code you know that will do this simply? All the best... Bob

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  • How do I use accepts_nested_attributes_for? I cannot use the .build method (!)

    - by Angela
    Editing my question for conciseness and to update what I've done: How do I model having multiple Addresses for a Company and assign a single Address to a Contact, and be able to assign them when creating or editing a Contact? Here is my model for Contacts: class Contact < ActiveRecord::Base attr_accessible :first_name, :last_name, :title, :phone, :fax, :email, :company, :date_entered, :campaign_id, :company_name, :address_id, :address_attributes belongs_to :company belongs_to :address accepts_nested_attributes_for :address end Here is my model for Address: class Address < ActiveRecord::Base attr_accessible :street1, :street2, :city, :state, :zip has_many :contacts end I would like, when creating an new contact, access all the Addresses that belong to the other Contacts that belong to the Company. So here is how I represent Company: class Company < ActiveRecord::Base attr_accessible :name, :phone, :addresses has_many :contacts has_many :addresses, :through => :contacts end Here is how I am trying to create a field in the View for _form for Contact so that, when someone creates a new Contact, they pass the address to the Address model and associate that address to the Contact: <% f.fields_for :address, @contact.address do |builder| %> <p> <%= builder.label :street1, "Street 1" %> </br> <%= builder.text_field :street1 %> <p> <% end %> When I try to Edit, the field for Street 1 is blank. And I don't know how to display the value from show.html.erb. At the bottom is my error console -- can't seem to create values in the address table: My Contacts controller is as follows: def new @contact = Contact.new @contact.address.build # I GET AN ERROR HERE: says NIL CLASS @contact.date_entered = Date.today @campaigns = Campaign.find(:all, :order => "name") if params[:campaign_id].blank? else @campaign = Campaign.find(params[:campaign_id]) @contact.campaign_id = @campaign.id end if params[:company_id].blank? else @company = Company.find(params[:company_id]) @contact.company_name = @company.name end end def create @contact = Contact.new(params[:contact]) if @contact.save flash[:notice] = "Successfully created contact." redirect_to @contact else render :action => 'new' end end def edit @contact = Contact.find(params[:id]) @campaigns = Campaign.find(:all, :order => "name") end Here is a snippet of my error console: I am POSTING the attribute, but it is not CREATING in the Address table.... Processing ContactsController#create (for 127.0.0.1 at 2010-05-12 21:16:17) [POST] Parameters: {"commit"="Submit", "authenticity_token"="d8/gx0zy0Vgg6ghfcbAYL0YtGjYIUC2b1aG+dDKjuSs=", "contact"={"company_name"="Allyforce", "title"="", "campaign_id"="2", "address_attributes"={"street1"="abc"}, "fax"="", "phone"="", "last_name"="", "date_entered"="2010-05-12", "email"="", "first_name"="abc"}} Company Load (0.0ms)[0m [0mSELECT * FROM "companies" WHERE ("companies"."name" = 'Allyforce') LIMIT 1[0m Address Create (16.0ms)[0m [0;1mINSERT INTO "addresses" ("city", "zip", "created_at", "street1", "updated_at", "street2", "state") VALUES(NULL, NULL, '2010-05-13 04:16:18', NULL, '2010-05-13 04:16:18', NULL, NULL)[0m Contact Create (0.0ms)[0m [0mINSERT INTO "contacts" ("company", "created_at", "title", "updated_at", "campaign_id", "address_id", "last_name", "phone", "fax", "company_id", "date_entered", "first_name", "email") VALUES(NULL, '2010-05-13 04:16:18', '', '2010-05-13 04:16:18', 2, 2, '', '', '', 5, '2010-05-12', 'abc', '')[0m

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  • initializing variables in ActiveRecord's classes

    - by Hadi
    How to initialize variables in ActiveRecord class? Variables here is the variables that are outside the scope of database such as: class Product attr_accessor :used end I want to initially assign @used initially to false, later if some person access the product, i will change @used to true First i thought of putting @used=false in initialize method, but it does not get called.

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  • Selenium: How to use stored value in a javascript comparison

    - by dstrube
    I've searched around for the answer to this and found lots of much more complicated questions, but none that gave me insight enough to figure this one out. What I'm doing: 1- open a page with a number that will probably be large 2- get the X Path to where that number is and store it to a variable 3- do a javascript to compare the above stored variable to see if it is bigger than 10, if so, set a new varaible to true; else false (because that is the default value) 4- verify the variable in #3 is true Sounds simple enough, no? Where it goes wrong: At step 3, comparing the variable from step #2 to 10 isn't allowed, at least not the way I'm writing it. Why? Details: <tr> <td>open</td> <td>http://www.google.com/search?hl=en&q=selenium+verifyEval</td> <td></td> </tr> <tr> <td>store</td> <td>/html/body/div[5]/div/p/b[3]</td> <td>resultCount</td> </tr> <tr> <td>storeEval</td> <td>var isMoreThan10 = new Boolean(); isMoreThan10 = (resultCount &gt; 10);</td> <td>isMoreThan10</td> </tr> <tr> <td>verifyExpression</td> <td>${isMoreThan10}</td> <td>true</td> </tr> I just thought of one possible workaround: Exapnd the javascript code to get the value there & assign it to a variable there so I'll be more likely to be able to use that variable in the javascript. Not sure exactly how that would be done- anyone wanna help with that? But surely there is be a better way, isn't there? I must be able to assign a value to a variable in Selenium, then in the next line use that variable in a javascript, right?

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  • siftware to manage applications within business.

    - by Richard Friend
    Hi I have been tasked to either find an off the shelf solution or to build inhouse some software that can maintain a list of all of the applications within our business, assign them to the different business areas that use them and list all the servers, documents, knowledge base etc that relate to the app in question. Does anyone know of any existing software that can do this ? Regards

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  • How to pass an IronPython instance method to a (C#) function parameter of type `Func<Foo>`

    - by Daren Thomas
    I am trying to assign an IronPython instance method to a C# Func<Foo> parameter. In C# I would have a method like: public class CSharpClass { public void DoSomething(Func<Foo> something) { var foo = something() } } And call it from IronPython like this: class IronPythonClass: def foobar(): return Foo() CSharpClass().DoSomething(foobar) But I'm getting the following error: TypeError: expected Func[Foo], got instancemethod

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  • how to get ip address of my computer

    - by asthagoyal
    hello i want to get ipaddress of my computer in variable ip thru this code but it assign nothing in ip char comm[100]; int s=0; char ip[100]; sprintf(comm,"export ip=`/sbin/ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'`"); s=system(comm); printf("\n ip is %s",ip);

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  • Error using a hyphen as an object property name in Flex

    - by John Leonard
    I'm trying to assemble a header object for an api request. One of the headers is 'Content-Type'. The hyphen is causing a compile error. Flex is giving me: 1050 - Cannot assign to a non-reference value. I find it spiteful that they enjoy the use of a hyphen in the error message while I hang my head and come here for answers.

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  • How to increment counters based on a printed array

    - by Sam Liew
    I managed to developed a simple board of 5x5 using random numbers and array. Big achievement for someone like me! :) Now I have to increment the counters depending on the frequency of the numbers. If the value within 0-49 is printed..then nCounter++ If the value within 50-75 is printed..then pCounter++ something like that. The problem is that I don't know how to increase the counters based on the printed board. Here is the code: #include <stdio.h> #include <stdlib.h> #include <time.h> int main() { //Initialize Variables int randomNumber; int rows; int columns; int hdCounter =0; int hCounter = 0; int cCounter = 0; int pCounter = 0; int nCounter = 0; //Declare board size int board[5][5]; //size of board is 5 x 5 //Create the random number generator seed srand(time(NULL)); //Assign the random numbers from 1 - 25 into variable randomNumber //Create the rows for the board for ( rows = 1; rows <= 5 ; rows++ ) { //Create the colimns for the board for ( columns = 1; columns <= 5 ; columns++ ) { //Assign variable randomNumber into variable board randomNumber = rand() %100 + 1; board[rows][columns] = randomNumber; //print the board printf("%d\t", board[rows][columns]); //calculate the frequency of numbers on the printed board if (randomNumber >= 85 && randomNumber <= 100 ) hdCounter++; else if ( randomNumber >= 75 ) hCounter++; else if ( randomNumber >= 65 ) cCounter++; else if ( randomNumber >= 50 ) pCounter++; else if ( randomNumber >= 1 ) nCounter++; else continue; } //Newline after the end of 5th column. printf("\n\n"); } printf( "N \t P \t C \t H \t HD\n\n" ); printf("%d \t %d \t %d \t %d \t %d \t", nCounter, pCounter, cCounter, hCounter, hdCounter); }//end main I tried replacing randomNumber in the if-statement with board[rows][columns] but I seem to get the same undesired results.

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