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  • How do i import AWT?

    - by David
    Im teaching myself java and the book i'm looking at just got around to explaining AWT. here is my source code: java.awt.* class obj { public static void main (String[]arg) { Point blank; blank = new Point (3,4) ; int x = blank.x ; System.out.prinln (x) ; } } here is the error i get while trying to compile it: obj.java:1: 'class' or 'interface' expected java.awt.* ^ 1 error What did i do wrong? / whats going wrong here?

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  • The Community-Driven GDB Primer

    - by fbrereto
    I was reading this question and realized it might be helpful for entry- and pro-level developers alike (including myself) to have a common reference for best practices in using gdb. Many questions asked on Stack Overflow could easily be solved by taking some time to step some code in a debugger, and it would be good to have a community-approved resource to "teach them how to fish", so to speak. Even for those seasoned veterans who occasionally find themselves in gdb when they are accustomed to a GUI-tastic debugger might benefit from those who are much more familiar with the command line tool. For starters (both to gdb and to prime this thread) I submit: Ninefinger's gdb primer The gdb quick reference guide, which is useful for telling you what commands are available but not how best to use them. My hope is this thread is a seed planted that is of continued value to the community. If by "continued value" the community decides to nix it altogether, well then the masses have spoken.

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  • User input in perl - Issue with running script in KomodoEdit

    - by golwalkar.rohan
    i wrote this tiny code on gedit and ran it :- #/usr/bin/perl print "Enter the radius of circle: \n"; $radius = <>; chomp $radius; print "radius is: $radius\n"; $circumference = (2*3.141592654) * $radius; print "Circumference of circle with radius : $radius = $circumference\n"; Runs fine using command line.Ran the same code on Komodo Edit: facing an issue i expect first line as output as :- Enter the radius of circle: whearas it waits on the screen i.e waiting for an input and after that runs everything in sequence -- can someone tell me why it runs fine with command line but not Komodo?

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  • convert bitset to string ??

    - by mr.bio
    Hi .. What is wrong with this code ? set<string> nk ; bitset<3> bs1(string("100")); nk.insert(bs1.to_string()); error: no matching function for call to `std::bitset<3u::to_string()' why?!

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  • getting rid of ruby gems that won't die

    - by holden
    I've got a few ruby gems that won't go away. I think it has to do with when I installed them. Occasionally I have forgotten to use "sudo" before doing a gem install, which results in a write error and from what I can gather puts a copy of the gem in my user directory instead of somewhere it can run. But gem uninstall doesn't work. It continually shows up in 'gem list' but can't uninstall it from either gem uninstall, or sudo gem uninstall. I tried directly deleting one gem after finding the path in my 'gem environment', but that still left the gem on the list. Also is it possible just to remove all gems and start from scratch? These are driving me nuts. I'm running OS X. Thanks,

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  • D-Day Calendar has wrong dates when importing from google calendar?

    - by chobo2
    Hi I am using D-Day calendar and I am not sure but I got a weird problem. I basically have this for my code iCalendar iCal = iCalendar.LoadFromStream(file.InputStream); foreach (Event evt in iCal.Events) { DateTime start = evt.DTStart.Date; DateTime end = evt.DTEnd.Date; // loop through it and get values. } Yet when I import a calendar from google calendar the end date is messed up on some of the stuff I am importing. Like for instance I have this Title: should not show When: Sun, March 21(all day). Yet when I import it in. I says the start date is the 21st yet the end date is the 22nd when it should be the 21st. Not sure what is going on. I am not really sure what other info I can give you guys.

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  • Android NDK Question

    - by Kyle
    The NDK does not contain very many shared libraries for you to access. As a result, I must build many sources myself and link them into my shared library via static/shared libraries. I want to compile libpng as a Static Library. Trouble is, I have absolutely no idea how, nor does google instruct you how to do so in their NDK. I'm no expert on the NDK even after reading everything I can find, so I would really appreciate someone who actually knows how this is done. I do have the Android.mk file for libpng, as google's Android OS source contains it. Infact, I got the entire directory on the android OS source for libpng and it's dependent libraries. It was somewhat of a shortcut instead of making one myself. I don't know how to make a particular directory which contains this file, though. Thanks for reading!

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  • CComPtr CoCreateInstance returns 0x80070582 (Class already exists.)

    - by Trevor Balcom
    I have a StartComObjects function called when the user presses the Login button and a StopComObjects function called when the user presses the Cancel button. The StartComObjects function uses CComPtr.CoCreateInstance to create the COM object and sets up some connection points using AfxConnectionAdvise. When the user presses the Cancel button the connection points are disconnected using AfxConnectionUnadvise and the COM object is stopped before calling Release on the CComPtr. When I press the login button a second time the CComPtr.CoCreateInstance returns 0x80070582 (Class already exists). This prevents the COM object from being created on the second call to StartComObjects. I am not sure why this isn't working. Shouldn't CComPtr::Release free the COM object and allow me to create a new one after the old one was stopped? Is there any way to get around this?

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  • Using PHP, how to parse the title and meta tags from a HTML page?

    - by Dylan Taylor
    Hey guys, I need to be able to get the TITLE and DESCIPTION metadata out of a page. I've been trying to do this but I've been getting more errors than actual results. (I have an array of about 10 URLS, usually only about 2 of them give me the descrption. I have yet to get the title). So how do I, in PHP, get the Desc and Title from a remote page, and if there is none or if there's an error, ignore it? -Dylan

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  • String to array or Array to string tips on formats, etc

    - by user316841
    hi, first of all thanks for taking your time! I'm a junior Dev, working with PHP + mysql. My issue: I'm saving data from a form to my database. From this form, there's only need to save the contacts: Name, phone number, address. But, it would be nice to have a small reference to the user answers. Let's say for each question we've got a value betwee 1 and 4. Since there's no need to create a table just for it, because what's needed is just the personal contacts. I'm thinking of recording each question/answer, as a letter and its correspondent value. Example (A2, B1, C5, D3, etc). My question is: Is there a format I could afterwards, handle easily ? Convert to array (string to array) in case the client change ideas, and ask this data, placed in table columns ? Just to prevent this situation! Example, From (A2, B1, C5 ) to array( "A" = "1", "B" = "1", "C" = "5" ) For now I guess, Regex is the answer, but it's allways hard to figure it out and I'm allways getting in troubles =) Thanks!

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  • How do I prepare myself for a summer of working on Python using Linux environment?

    - by Shailesh Tainwala
    Hi, I have used just Windows for programming so far. Now, I have an internship starting in two weeks and I will be using just Linux environment with Python programming language. I've installed Ubuntu on my system but have no exposure to shell scripting. I need some advice on how I can quickly learn to use the Linux terminal quickly. Any books or web resources that you can suggest? Also, is there a particular IDE that is generally preferred for Python programming on Linux, or is Vim preferred? How can I best prepare myself for the internship ahead? Thanks for taking the time.

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  • Member variable pointers to COM objects

    - by drelihan
    Hi Folks, Is there any problem with keeping member variable pointer refernces to COM objects and reussing the reference through out the class in C++. Is anybody aware of a reason why you would want to call .CreateInstance every time you wanted a to use the COM object i.e. you were getting a fresh instance each time. I cannot see any reason who you would want to do this, Thanks, (No is an acceptable answer!!!)

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  • should std::auto_ptr<>::operator = reset / deallocate its existing pointee ?

    - by afriza
    I read here about std::auto_ptr<::operator= Notice however that the left-hand side object is not automatically deallocated when it already points to some object. You can explicitly do this by calling member function reset before assigning it a new value. However, when I read the source code for header file C:\Program Files\Microsoft Visual Studio 8\VC\ce\include\memory template<class _Other> auto_ptr<_Ty>& operator=(auto_ptr<_Other>& _Right) _THROW0() { // assign compatible _Right (assume pointer) reset(_Right.release()); return (*this); } auto_ptr<_Ty>& operator=(auto_ptr<_Ty>& _Right) _THROW0() { // assign compatible _Right (assume pointer) reset(_Right.release()); return (*this); } auto_ptr<_Ty>& operator=(auto_ptr_ref<_Ty> _Right) _THROW0() { // assign compatible _Right._Ref (assume pointer) _Ty **_Pptr = (_Ty **)_Right._Ref; _Ty *_Ptr = *_Pptr; *_Pptr = 0; // release old reset(_Ptr); // set new return (*this); } What is the correct/standard behavior? How do other STL implementations behave?

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  • Why did i get this error?

    - by David
    here's the code: class Acount { int sum ; String owner ; //these seem to make sense //a constructor or two public Acount () { this.sum = 0 ; this.owner = "John Doe" ; } public Acount (String name) {this.sum = 0 ; this.owner = name ; } public Acount (String name, int sum) {this.sum = sum ; this.owner = name ; } //prints an acount in the format "owner" "sum" public static void printAcount (Acount Acount) {System.out.print (Acount.owner) ; System.out.print (" ") ; System.out.println (Acount.sum) ; } public static void main (String[]arg) { Acount Acount1 = new Acount ("david", 100) ; System.out.println ("heres the first acount as it was created:") ; printAcount (Acount1) ; System.out.println ("now i changed one of its instance varaibles with a static method") ; upOne (Acount1) ; printAcount (Acount1) ; } public static Acount upOne (Acount Acount) { Acount.sum = Acount.sum + 1 ; return Acount ; } } here's the error: Exception in thread "main" java.lang.NoClassDefFoundError: Acount/java What went wrong?

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  • GD PHP Base64 Picture (png) error

    - by hogofwar
    This is part of my code: $con = mysql_connect("localhost","username","passs"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("database", $con); if(mysql_num_rows(mysql_query("SELECT name FROM xbox_user WHERE name = '$user'"))){ // Code inside if block if userid is already there $result = mysql_query("SELECT name FROM xbox_user WHERE name = '$user'"); while($row = mysql_fetch_array($result)) { if ($row['date'] > $row['date']+100){ $src = imagecreatefrompng($result['XboxInfo']['TileUrl']); $base64= base64_encode(file_get_contents($result['XboxInfo']['TileUrl'])); $date = date("Ymd"); mysql_query("UPDATE xbox_user SET date = '$date' SET avatar = '$base64' WHERE name = '$user'"); }else{ $encode = $row['avatar']; //echo $encode; $rand = rand(1, 1337); file_put_contents('/tmp/'.$rand.'.png', base64_decode($row['avatar'])); //ERROR LINE $src = imagecreatefrompng('/tmp/'.$rand.'.png'); unlink('/tmp/'.$rand.'.png'); } } }else{ $src = imagecreatefrompng($result['XboxInfo']['TileUrl']); $base64= base64_encode(file_get_contents($result['XboxInfo']['TileUrl'])); $date = date("Ymd"); mysql_query("INSERT INTO xbox_user (name, avatar, date) VALUES ('$user', '$base64', '$date')"); } It comes up with multiple errors but I feel this one should be addressed first as the other could just be caused by the first error: Warning: imagecreatefrompng() [function.imagecreatefrompng]: '/tmp/628.png' is not a valid PNG file in /home/nah/public_html/experiment/xbox/draw3.php on line 60 It also does create an entry in my mysql DB

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  • PHP array taking up too much memory

    - by Dylan Taylor
    I have a multidimensional array. The array itself is fine. My problem is that the script takes up monster amounts of memory, and since I'm running this on my MAMP install on my iBook G4, my computer freezes up. Below is the full script. $query = "SELECT * FROM posts ORDER BY id DESC LIMIT 10"; $result = mysql_query($query); $posts = array(); while($row = mysql_fetch_array($result)){ $posts[$row["id"]]['post_id'] = $row["id"]; $posts[$row["id"]]['post_title'] = $row["title"]; $posts[$row["id"]]['post_text'] = $row["text"]; $posts[$row["id"]]['post_tags'] = $row["tags"]; $posts[$row["id"]]['post_category'] = $row["category"]; foreach ($posts as $post) { echo $post["post_id"]; } Is there a workaround that still achieves my goal (to export the MySQL query rows to an array)? -Dylan

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  • how do i download source code using svn on OS X?

    - by Moshe
    How can I get source code off the internet using SVN? I'm trying to download Oolong game engine for iPhone OS. I am on Mac OS X 10.6 with XCode 3.2.2. svn checkout http://oolongengine.googlecode.com/svn/trunk/ oolongengine-read-only is the command I got from the Oolong Google Code page.

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  • PHP array taking up to much memory

    - by Dylan Taylor
    I have a multidimensional array. The array itself is fine. My problem is that the script takes up monster amounts of memory, and since I'm running this on my MAMP install on my iBook G4, my computer freezes up. Below is the full script. $query = "SELECT * FROM posts ORDER BY id DESC LIMIT 10"; $result = mysql_query($query); $posts = array(); while($row = mysql_fetch_array($result)){ $posts[$row["id"]]['post_id'] = $row["id"]; $posts[$row["id"]]['post_title'] = $row["title"]; $posts[$row["id"]]['post_text'] = $row["text"]; $posts[$row["id"]]['post_tags'] = $row["tags"]; $posts[$row["id"]]['post_category'] = $row["category"]; foreach ($posts as $post) { echo $post["post_id"]; } Is there a workaround that still achieves my goal (to export the MySQL query rows to an array)? -Dylan

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  • Guide for http://www.ch-werner.de/javasqlite java wrapper library for SQlite?

    - by Tom Nielsen
    I'm working on a large computer science school project using java and SQlite. After finding out that the zentus.org wrapper errors on databases with ON DELETE and ON UPDATE clauses set, I have changed to the other wrapper found at http://www.ch-werner.de/javasqlite. However, I find the documentation lacking somewhat when trying to get an overview on how it works and how to use it, and the function descriptions are very very short, and you have to scan through every function and somewhat guess how they work and what they do. I wasn't able to find any guides on google on how to use it. My question: Does anyone know a link for a guide or tutorial for the ch-werner.de/javasqlite wrapper, or else can give me a basic code example, or give a quick overview of querying the database and the most used functions, and how to use them?

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  • C++ -- Is there an implicit cast here from Fred* to auto_ptr<Fred>?

    - by q0987
    Hello all, I saw the following code, #include <new> #include <memory> using namespace std; class Fred; // Forward declaration typedef auto_ptr<Fred> FredPtr; class Fred { public: static FredPtr create(int i) { return new Fred(i); // Is there an implicit casting here? If not, how can we return // a Fred* with return value as FredPtr? } private: Fred(int i=10) : i_(i) { } Fred(const Fred& x) : i_(x.i_) { } int i_; }; Please see the question listed in function create. Thank you // Updated based on comments Yes, the code cannot pass the VC8.0 error C2664: 'std::auto_ptr<_Ty::auto_ptr(std::auto_ptr<_Ty &) throw()' : cannot convert parameter 1 from 'Fred *' to 'std::auto_ptr<_Ty &' The code was copied from the C++ FAQ 12.15. However, after making the following changes, replace return new Fred(i); with return auto_ptr<Fred>(new Fred(i)); This code can pass the VC8.0 compiler. But I am not sure whether or not this is a correct fix.

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