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• GregorianCalander

  - by namitjain23

  Hey guys, i know this is a very simple question but i am new to Java so please bare with me. I have create a program that can calculate the time a book is due to come back after being issed! So please help me out Here is the piece of code that i have: public void loan(int numOfDays) { if( onLoan == true) { System.out.println("Already on Loan, Return Date : "+Calendar.DATE ); } else { due.set( numOfDays, Calendar.DATE ); System.out.println("Available"); onLoan = true; } } // Mark the book as having been returned Basically i need to replace that Calendar.DATE to get me calculations right. I need to calculate the date passed by the TEST file and calulate the date it will be returned. This project needs to be submitted TOMORROW, so please please help me out!

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• Ant command line arguments

  - by js7354

  Program works fine when run with eclipse run configurations, but when run with ant, it is unable to parse int from args[0], which I do not understand. Full code is available here https://gist.github.com/4108950/e984a581d5e9de889eaf0c8faf0e57752e825a97 I believe it has something to do with ant, target name="run" description="run the project"> java dir="${build.dir}" classname="BinarySearchTree" fork="yes"> <arg value="6 in.txt"/> /java> /target> the arg value will be changed via the -D flag, as in ant -Dargs="6 testData1.txt" run. Any help would be much appreciated, it is very frustrating.

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• Obtaining frame pointer in C

  - by assketchum

  I'm trying to get the FP in my C program, I tried two different ways, but they both differ from what I get when I run GDB. The first way I tried, I made a protocol function in C for the Assembly function: int* getEbp(); and my code looks like this: int* ebp = getEbp(); printf("ebp: %08x\n", ebp); // value i get here is 0xbfe2db58 while( esp <= ebp ) esp -= 4; printf( "ebp: %08x, esp" ); //value i get here is 0xbfe2daec My assembly code getEbp: movl %ebp, %eax ret I tried making the prototype function to just return an int, but that also doesn't match up with my GDB output. We are using x86 assembly. EDIT: typos, and my getEsp function looks exactly like the other one: getEsp: movl %esp, %eax ret

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• Subtle C++ mistake, can you spot it?

  - by aaa

  I ran into a subtle C++ gotcha, took me while to resolve it. Can you spot it? class synchronized_container { boost::mutex mutex_; std::vector <T> container_; void push_back(const T &value) { boost::scoped_lock(mutex_); // raii mutex lock container_.push_back(value); } ... }; scoped lock is a raii mutex lock, obtains lock on constructor, release lock in destructor. The program will work as expected in serial, but will may occasionally produce weird stuff with more than one thread.

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• Setting language/culture for reporting services report rendered through C#

  - by Chris Latta

  I have written a report renderer in C# that runs and attaches reports to an email. This is all working great, except the date format of the parameters are incorrect when listed in the report title. All the reports have their language set to =User!Language and the parameters are output using the FormatDateTime function to format according to the user's regional settings. I am basically using the rendering method described here on MSDN. This all works great when the reports are run through the browser. However, when I render the report from C# it uses en-US date format. The report server's regional settings are set appropriately to the correct region as are the regional settings of the computer the C# progam is running on.. What property do I need to set in my C# program for the report to be rendered using my appropriate language/culture?

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• Problem with SDL 1.2 when setting videomode with SDL_SetVideoMode

  - by user574911

  I have a very simple program, in which I am initialising with SDL_Init(flags) and using SDL_SetVideoMode but It fails by returning null. I think I am missing some config parameters/options, if any one knows about this erro please let me know. My code is as below : if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) { fprintf(stderr, "Could not initialize SDL\n"); exit(1); } screen = SDL_SetVideoMode(640, 480, 0, 0); if(!screen) { fprintf(stderr, "SDL: could not set video mode - exiting\n"); exit(1); }

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• Compare to a defined constants in C?

  - by J.W.

  I am trying to compare to a defined constants in C, and I have simplified my program to the following.. #include "stdio.h" #include "stdlib.h" #define INVALID_VALUE -999; int main(int argc, const char* argv[]) { int test=0; if(test==INVALID_VALUE) //The error line.. return INVALID_VALUE; return 0; }; And when I use gcc to compile. it gives out error "error: expected ‘)’ before ‘;’ token" Any reason that this cannot be done.

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• how to form an array of numbers , taken input from a file in C

  - by mekasperasky

  The program should be able to make an array of numbers from a text file which reads like this The data is given as this 123 2132 1100909 3213 89890 my code for it is char a; char d[100]; char array[100]; a=fgetc(fp) // where fp is a file pointer if (a=='') { d[count1]='/0'; strcpy(&array[count],d); count=count+1; memset(d,'\0',100) count1=0; } else { d[count1]=a; count1=count1+1; } a=fgetc(fp);

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• programming help

  - by user208639

  class Person holds personal data Its constructor receives 3 parameters, two Strings representing first and last names and an int representing age public Person(String firstName, String lastName, int age) { its method getName has no parameters and returns a String with format "Lastname, Firstname" its method getAge takes no parameters and returns an int representing the current age its method birthday increases age value by 1 and returns the new age value Create the class Person and paste the whole class into the textbox below public class Person { public Person(String first, String last, int age) { getName = "Lastname, Firstname"; System.out.print(last + first); getAge = age + 1; return getAge; System.out.print(getAge); birthday = age + 1; newAge = birthday; return newAge; } } im getting errors such as "cannot find symbol - variable getName" but when i declare a variable it still not working, i also wanted to ask if i am heading in the right direction or is it all totally wrong? im using a program called BlueJ to work on.

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• Can EventMachine recognize all threads are completed?

  - by philipjkim

  I'm an EM newbie and writing two codes to compare synchronous and asynchronous IO. I'm using Ruby 1.8.7. The example for sync IO is: def pause_then_print(str) sleep 2 puts str end 5.times { |i| pause_then_print(i) } puts "Done" This works as expected, taking 10+ seconds until termination. On the other hand, the example for async IO is: require 'rubygems' require 'eventmachine' def pause_then_print(str) Thread.new do EM.run do sleep 2 puts str end end end EventMachine.run do EM.add_timer(2.5) do puts "Done" EM.stop_event_loop end EM.defer(proc do 5.times { |i| pause_then_print(i) } end) end 5 numbers are shown in 2.x seconds. Now I explicitly wrote code that EM event loop to be stopped after 2.5 seconds. But what I want is that the program terminates right after printing out 5 numbers. For doing that, I think EventMachine should recognize all 5 threads are done, and then stop the event loop. How can I do that? Also, please correct the async IO example if it can be more natural and expressive. Thanks in advance.

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• about event handle-function in JavaScript

  - by T_t

  hi! In my program,i write like this: function handleFuc( event ){ var a = event.pageX; var b = event.pageY; var tempdiv = document.createElement("div"); tempdiv.onmouseout = function(){ var x = event.pageX; // 1 var y = event.pageY; // } } var div = document.getElementById( "id" ); div.onmouseover = function(){ handleFuc( event ); } now,in function handleFuc, how could i distinguish the two "event"? Thanks! :)

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• Windows 7 application issue - only appears in taskbar

  - by tylercomp

  I have an issue where a program that runs fine under windows xp has stopped working with windows 7. The application appears to start fine then disappears with only the taskbar icon remaining. If you hover over the taskbar icon you can see the application and it kind of looks correct but selecting it does nothing. I cannot seem to get the application to actually appear. Has anyone experienced anything like this and is aware of any possible solutions? Recent builds have worked with windows 7 in the past and I don't believe any significant changes were made before this issue arrived. 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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• Make network changes permanent - C++

  - by pparescasellas

  I need to allow an external client to change the IP of the Linux machine where the program is running (C++). I already know how to list all the local interfaces and the current IPs assigned to them. I also know how to programatically change said IPs. What I need to know is how to make this change permanent so, if the machine reboots, it keeps the same network configuration. What's the best way to do this? Manually parsing /etc/network/interfaces? Calling some linux command? Edit: I'm using Debian. Thanks!

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• C: Comparing two long integers (very strange)

  - by Kyle

  Hi, I have following situation (unix) : x is a long and has value 300 y is a long and has value 50000 if (x <= y) printf("Correct."); if (x > y) printf("Ouch."); Now I always get "Ouch". That means the program keeps telling me that 300 is greater than 50000! It only works again when I do if ((int)x <=(int) y) printf("Correct."); if ((int)x > (int)y) printf("Ouch."); So what is wrong with the comparison operators?

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• Using AttachConsole, user must hit enter to get regular command line.

  - by Clangon

  I have a progaram that can be ran both as a winform, or from command line. If it is invoked from a command line I call AttachConsole(-1) to attach to parent console. However, after my program ends, the user must hit enter to get back the standard command prompt ("c:\"). is there a way to avoid that need? Thanks. I could wrap it in a cmd file to avoid that issue, but I would like to do it from my exe.

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• Get records in particular date range

  - by developer

  Hi All, I have a column in database that shows DateCreated. Now I want to filter records depending on the date range selected. Eg, Created within 60 days, created withing year, etc. I have a variable dateCreated that shows me what the user has selected as the range.i.e., whether it is Created within 60 days, created withing year. if (datecreated == "Created within 60 days") { DateTime CurrTime = DateTime.Now; if (prg.Subscriber.Username == CurrentUsername && prg.Program.DateCreated<=DateTime.Now - 60) { UserPrgList.Add(new ProgramSubscriptionViewModel(prg)); } } But the above code wont work..what would be the syntax to get the records within a particular range??

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• Will the template argument's destructor to a templated class be called on deletion?

  - by Mutmansky

  If you have a templated base class as in the following example: class A{ A(); virtual ~A(); }; template <class T> class B : public T { B(); virtual ~B(); }; typedef B<A> C; class D : public C { D(); virtual ~D(); }; When you delete an instance of D, will the destructor of A be called? I'll probably create a test program to find out what happens, but just thinking about it, I wasn't sure what should happen.

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• Windows Batch script - For /L not working -- simple

  - by XoronioX

  need some quick help. This is a university program, everything is working fine except when I call my :forLoop method to iterate through 100 numbers (1,1,100) starting at 1 going by 1 til 100 and doing the iteration % 5 (i%%5). for some reason I cannot get this to work. appreciate any help or direction. When I echo %%A it is iterating through all the number perfect. When I echo %result% I get a blank "" (nothing inside) :forLoop FOR /L %%A IN (1,1,100) DO ( set /A result=%%A %% 2 echo "%%A" echo "%result%" ) Correct code is :forLoop setlocal ENABLEDELAYEDEXPANSION FOR /L %%A IN (1,1,100) DO ( set /A result=%%A %% 5 echo !result! >> results.txt set /A total=!total!+!result! echo !total! )

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• How can I determine if a specified string is in a specific MySQL column? (and also perhaps a tutoria

  - by Rob

  This is a fairly simple question. Basically, I'm having a program send HardWare ID's to my PHP script as GET data. I need the PHP script check to make sure that HardWare ID is in a specific MySQL column, and if it is, { continue the script, } else { exit(); } Problem is I'm not too good with MySQL and have no idea how to do this. However, I feel that I should know this by now, so if someone could also link me to a good tutorial site for MySQL, that kind of keeps it "humanized" if you know what I mean. One that "dumbs it down." I'm not dumb or anything, I just get sidetracked easily, and if all its doing is showing me code and not explaining it, I won't pick it up. If you don't have any tutorial sites off the top of your head, I'll settle for help with the first question, and try to hunt down a tutorial later.

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• Respond to a UDP message

  - by JDCAce

  I have a pair of very simple C# programs (server and client). The client's user enters an IP address, and the client sends a UDP message to the server. The server uses UDPClient.Receive() to listen to IPAddress.Any, prints out the message it received and where it was sent from (the client's IP address), then sends a UDP message back to the client. The problem is in that last part: my client is not receiving any message. It listens only to the server, instead of IPAddress.Any. The SendUdpMessage() and WaitForMessage() methods are identical, except for the IPAddress.Any part. I cannot find what's wrong! I can post the code if I need to, but I don't know which part is relevant, and I don't want to post the entire program (about 150 lines combined).

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• convert object to in

  - by hoora

  hello! i'm beginner and i want to write a java code in eclipse! this program take two linkedlist of integers(for exp:a & b) and make a linkedlist (for exp:d) that every elements of it are summation of elements of that linkedlist! but i can't add this two element of linkedlist because these are Object!! please help me!! exp: a=[3,4,6,7,8] b=[4,3,7,5,3,2,1] d=[7,7,13,12,11,2,1] THANK YOU VERY VERY VERY MUCH!

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• Can set_intersection be used with hash_set in C++?

  - by R S

  I am calculating intersection, union and differences of sets. I have a typedef of my set type: typedef set<node_type> node_set; When it is replaced with typedef hash_set<node_type> node_set; The results are different. It's a complicated program, and before I start debugging - am I doing it right? When I use functions like this: set_intersection(v_higher.begin(), v_higher.end(), neighbors[w].begin(), neighbors[w].end(), insert_iterator<node_set>(tmp1, tmp1.begin())); should they work seamlessly with both set and hash_set?

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• headfile conflict let every line becomes "not declared"

  - by altria

  I have a.h a.cpp b.h and a library for b. The thing is, if I choose to include b.h in either a.h or a.cpp, it will let complier return "was not declared in this scope" for every line of a.h. The same program works fine on another computer, although Makefile might be different. I have to admit, I think I may have change some settings, but I forgot which one I changed. Is there anybody have any idea? I am using linux and gcc.

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• Why does the return statement not print anything to the console?

  - by dyoverdx

  I Googled it and I didn't hit anything useful, so I decided to ask on here. I can't use System.out.println for the project that I am working on, so I used the return statement. Everything compiles just fine, but my return statement doesn't print anything to the console, the program just terminates. All I have in the code is just an if-else statement that returns true or false. Why don't I see anything on the console? I am using Eclipse Juno's Console by the way.

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