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• List Question in Java

  - by TiNS

  Hello All, I have a following ArrayList, [Title,Data1,Data2,Data3] [A,2,3,4] [B,3,5,7] And I would like to convert this one like this, [Title,A,B] [Data1,2,3] [Data2,3,5] [Data3,4,7] I'm bit confused with the approach. Any hint would be much appreciated. Thanks.

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• really basic cPanel question?

  - by Haroldo

  I'm trying to install imageMagick but i've got practically zero server knowledge, i don't get what this means: You can easily install Imagemagick on a cPanel by using cPanel script. /scripts/installimagemagick will do it for you. what is this /scripts business, where do i type it? do i type it? what's this all about?!!! http://geobaby.in/installing-imagemagick-on-a-cpanel-server/

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• Java inheritance question

  - by user247866

  So I have 3 classes. Abstract class A Class B extends class A independent Class C In class D that contains the main method, I create a list of instances of class B List<B> b = method-call();` // the method returns a list of instances of class B Now in class C I have one method that is common to both A and B, and hence I don't want to duplicate it. I want to have one method that takes as input an instance of class A, as follows: public void some-method(LIst<A> a) However, when I do: C c = new C(). c. some-method(b) I get an error that some-method is not applicable for the argument List, instead it's expecting to get List. Is there a good way to fix this problem? Many thanks!

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• SQL Server replication question.

  - by schar

  I had inherited this SQL Server where we put data in a table (Call TableA) on a database (DB-A). I can see the tableA in another database on the same server ( DB-B) gets the same data right away. Any ideas how this is implemented? I am trying to see the trace but so far no luck. Any one has an idea? At this stage I am not sure if its replication. This is a guess

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• Classification question

  - by adam

  If php and ruby are languages, and cake and rails are frameworks, how do CMS like drupal and joomla fit into the scheme... can you use them in any language and any framework?

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• Question about Null vs zero

  - by Mike

  I have this function: void ToUpper(char * S) { while (*S!=0) { *S=(*S >= 'a' && *S <= 'z')?(*S-'a'+'A'):*S; S++; } } What does it mean for *S != 0, should it be null instead?

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• Question regarding synchronization

  - by mousey

  Using synchronization slows down the execution of a program. Is there a way to improve the speed of execution ?

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• Question about referencec in java

  - by kuang

  I want to know what the difference between : String s = "text"; and : String s = new String("text");

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• Database Design Question

  - by Soo

  Ok SO, I have a user table and want to define groups of users together. The best solution I have for this is to create three database tables as follows: UserTable user_id user_name UserGroupLink group_id member_id GroupInfo group_id group_name This method keeps the member and group information separate. This is just my way of thinking. Is there a better way to do this? Also, what is a good naming convention for tables that link two other tables?

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• question about comlen function in java

  - by davit-datuashvili

  in c or c++ function comlen is defined such int comlen(char *p,char *q){ int i=0; while *p && (*p++==*q++) i++; return i; is this code equivalent of this function int comlen(String s,String m){ int i=0; while (i<s.length() && s.charAt(i)==m.charAt(i)){ i++; } return i; ? please help

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• perl look behind question

  - by sfgroups

  Hi, I am trying extract number, from line has 'copies : 5' string. this look behind expression not working. echo "copies : 5" |perl -ne 'print $1 if /(\d+)(? Thanks

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• iphone threading question - looping?

  - by Brodie4598

  i want to have a background thread in my app that changes an image every 5 seconds for as long as the app is being run. Can someone point me in the direction of how this works? I am new to threads.

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• Another C++ question, delete not working?

  - by kyeana

  New to c++, and am having a problem with delete and destructor (I am sure i am making a stupid mistake here, but haven't been able to figure it out as of yet). When i step through into the destructor, and attepmt to call delete on a pointer, the message shows up "Cannot access memory at address some address." The relevant code is: /* * Removes the front item of the linked list and returns the value stored * in that node. * * TODO - Throws an exception if the list is empty */ std::string LinkedList::RemoveFront() { LinkedListNode *n = pHead->GetNext(); // the node we are removing std::string rtnData = n->GetData(); // the data to return // un-hook the node from the linked list pHead->SetNext(n->GetNext()); n->GetNext()->SetPrev(pHead); // delete the node delete n; n=0; size--; return rtnData; } and /* * Destructor for a linked node. * * Deletes all the dynamically allocated memory, and sets those pointers to 0. */ LinkedListNode::~LinkedListNode() { delete pNext; // This is where the error pops up delete pPrev; pNext=0; pPrev=0; }

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• a simple question on css

  - by chris

  forgive me,I have one div and i don't wish to inherit any formatting from any other stylesheets- i want to start fresh with this div, how do i do it?

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• Question About Classic MVC

  - by kernix

  Hello, In classic MVC the model notifies the view about changes made on it. In C# this means I have to subclass the View I'm interested in and in the subclassed class register to the model's event. For example, if I were to implement MVC using C# and Winforms, I had to subclass TextBox class and then register inside the MyTextBox's constructor for the model events. Am I correct? How was this issued in Smalltalk? Does one also need to subclass every View in order to register the model's events, or is there some way to dynamically add events to the views on the fly? Thanks

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• C# design question (Connections)

  - by David

  Hello, I would like to hear your suggestions on kind of design problem which I have in c#. So, I am making a program where people can meet and draw in the same window over the internet or LAN. I am drawing into a bitmap and than I set it to a pictureBox component. I have a hard time to decide how to send updates to each user, what is the best way to do it. Should I send coordinates of mouse and than do the drawing on each users screen or stream the image to each. Maybe you know better solution to keep it synchronized and efficient. Thank you.

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• Yet another div height question

  - by cf_PhillipSenn

  Over the years, I've struggled with this. This year, there might be a solution. I need a header, content and footer. I would like the footer to be at the bottom of the page, the header at the top, and the content in between. I would like the content to have a scroll bar. Q: Is that too much to ask?

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• Oracle/SQL table attribute question

  - by UnceRawr

  I have been given a context schema for a database i need to make for my coursework but some of the attributes (column names) contain letters in brackets at the end of them such as: *x_Number (Adm) *x_Number (A) *x_Number (P) The problem is i have no idea what these letters mean! Can anyone help?

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• memory management question -- releasing an object which has to be returned

  - by ulag

  Hi, I have an NSMutableArray called playlist. This is in a method called getAllPlaylists. The code is something like this: -(NSMutableArray *)getAllPlaylists { //playlist is an instance variable playlist = [[NSMutableArray alloc] init]; //memory leak here . . //some code here which populates the playlist array [playlist addObject: object1]; . . return playlist; } The array allocation step of playlist is causing a memory leak. In such a scenario where can i release this array? Or can i avoid allocation n initialization of playlist here by doing something else?

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• Send mass emails php (probably a shell question?)

  - by Rob

  I've got 80,000 users on my site and i've recently turned away from the forum script i've been using and built something very simple myself that works just as well (the forum script was too bloated and resource intensive for my simple site) The only thing i've lost is the ability to mass email all my members. So i'm looking to come up with a script to do it myself. After looking around (including questions on here) I decided using Swift Mailer would be a good idea. However i've been through all the documentation and can't see how to send say "100 at a time" and i'm not sure how to go about it. To put it simply. I have an admin panel with a form with two inputs "subject" and "message". When I click submit what is the safest way for me to send 80,000 emails without crashing my server or being marked as spam? I'm on quite a beefy dedicated server so don't have the problems associated with shared servers. Thanks in advance for any advice!

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• F# "if" expression question

  - by Here

  Hi, I test some simple F# code for "if" expression, but the result is unexpected for me: > let test c a b = if c then a else b;; val test : bool -> 'a -> 'a -> 'a However > test true (printfn "a") (printfn "b");; a b val it : unit = () I'd expect only "a" is printed out but here I got both "a" and "b". I wonder why it comes out this way? Thanks!

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• "if" expression question

  - by Here

  Hi, I test some simple F# code for "if" expression, but the result is unexpected for me: > let test c a b = if c then a else b;; val test : bool -> 'a -> 'a -> 'a However > test true (printfn "a") (printfn "b");; a b val it : unit = () I'd expect only "a" is printed out but here I got both "a" and "b". I wonder why it comes out this way? Thanks!

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• question about sizeof

  - by davit-datuashvili

  can anybody explain me what will be equivalent of this in java? for (i =(sizeof(num)*8-1); i; i–)

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• A question about c/c++ syntax

  - by user198729

  I don't have the c++ environment yet right now. It seems to me that a function must be declared/defined first to be called in c. I mean, the declared/defined part should be ahead of the calling part. Is it the same in c++? Finally, it seems c++ is adding new features to itself, what about c, has it stopped being developed?

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• Stupid Question Regarding If-Else's Simultaneous Execution in C++ or C

  - by Kerb_z

  In C or C++ if ( x ) statement1; else statement 2; for what value of x both statements will be executed?? I know we can execute if-else together like this: if(1){ goto ELSE; } else{ ELSE: } Is there any way, like a value? (Which i think is not possible. Asking because someone is arguing!)

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