Search Results

Search found 3850 results on 154 pages for 'newbie cpp'.

Page 66/154 | < Previous Page | 62 63 64 65 66 67 68 69 70 71 72 73  | Next Page >

• Accessing initialized variable on different class C++

  - by d0pe

  I'm having some difficulties with this problem. The main idea is, I initialized a variable of class type B in class A, class A.h has the variable Z declared as public, like B *Z; In class A.cpp, I initialized it as Z = new B(); Now, I want to access that variable from class C and I'm unable to do so. C.h includes A.h and B.h

  Read the article

• curl problems in c++ class

  - by Danilo

  I read a few articles on c++ / curl here on stackoverflow and assembled the following. The main goal is to handle the whole request in an instance of a class -- and maybe later in a secondary thread. My problem is: "content_" seems to stay empty though its the same addr and HttpFetch.h: class HttpFetch { private: CURL *curl; static size_t handle(char * data, size_t size, size_t nmemb, void * p); size_t handle_impl(char * data, size_t size, size_t nmemb); public: std::string content_; static std::string url_; HttpFetch(std::string url); void start(); std::string data(); }; HttpFetch.cpp: HttpFetch::HttpFetch(std::string url) { curl_global_init(CURL_GLOBAL_ALL); //pretty obvious curl = curl_easy_init(); content_.append("Test"); std::cout << &content_ << "\n"; curl_easy_setopt(curl, CURLOPT_URL, &url); curl_easy_setopt(curl, CURLOPT_WRITEDATA, &content_); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &HttpFetch::handle); //curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); //tell curl to output its progress curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L); //std::cout << &content_ << "\n"; } void HttpFetch::start() { curl_easy_perform(curl); curl_easy_cleanup(curl); } size_t HttpFetch::handle(char * data, size_t size, size_t nmemb, void * p) { std::string *stuff = reinterpret_cast<std::string*>(p); stuff->append(data, size * nmemb); std::cout << stuff << "\n"; // has content from data in it! return size * nmemb; } main.cpp: #include "HttpFetch.h" int main(int argc, const char * argv[]) { HttpFetch call = *new HttpFetch("http://www.example.com"); call.start(); ::std::cout << call.content_ << "\n" } Thanks in advance

  Read the article

• Problem installing build-essential and upgrading g++ on Ubuntu 8.04

  - by ehsanul

  I'm having some trouble with dependencies it seems, but myself don't really know how to resolve the issue. Here's the output: ~:) sudo apt-get install build-essential Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation: The following packages have unmet dependencies: build-essential: Depends: g++ (>= 4:4.3.1) but 4:4.2.3-1ubuntu6 is to be installed E: Broken packages ~:) sudo apt-get install g++ Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation: The following packages have unmet dependencies: g++: Depends: cpp (>= 4:4.3.1-1ubuntu2) but 4:4.2.3-1ubuntu6 is to be installed Depends: gcc (>= 4:4.3.1-1ubuntu2) but 4:4.2.3-1ubuntu6 is to be installed Depends: g++-4.3 (>= 4.3.1-1) but it is not going to be installed Depends: gcc-4.3 (>= 4.3.1-1) but it is not installable E: Broken packages ~:) Edit: I just tried aptitude instead of apt-get, as suggested. Doesn't work, had other problems: ~:) sudo aptitude install build-essential [sudo] password for ehsanul: Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done Building tag database... Done The following packages are BROKEN: g++ g++-4.3 libstdc++6-4.3-dev The following packages have been automatically kept back: dpkg-dev fakeroot libdns35 libisc35 linux-libc-dev patch The following NEW packages will be automatically installed: libgmp3c2 libmpfr1ldbl The following packages have been kept back: adobe-flashplugin bind9-host dnsutils gvfs gvfs-backends gvfs-fuse libatm1 libbind9-30 libgvfscommon0 libisccc30 libisccfg30 liblwres30 libnautilus-extension1 linux-headers-2.6.24-24 linux-headers-2.6.24-24-generic linux-image-2.6.24-24-generic nautilus nautilus-data The following NEW packages will be installed: libgmp3c2 libmpfr1ldbl The following packages will be upgraded: build-essential The following partially installed packages will be configured: timidity 2 packages upgraded, 4 newly installed, 0 to remove and 24 not upgraded. Need to get 775kB/6265kB of archives. After unpacking 20.3MB will be used. The following packages have unmet dependencies: libstdc++6-4.3-dev: Depends: gcc-4.3-base (= 4.3.2-1ubuntu11) which is a virtual package. Depends: libstdc++6 (>= 4.3.2-1ubuntu11) but 4.2.4-1ubuntu4 is installed. g++-4.3: Depends: gcc-4.3-base (= 4.3.2-1ubuntu11) which is a virtual package. Depends: gcc-4.3 (= 4.3.2-1ubuntu11) which is a virtual package. Depends: libc6 (>= 2.8~20080505) but 2.7-10ubuntu4 is installed. g++: Depends: cpp (>= 4:4.3.1-1ubuntu2) but 4:4.2.3-1ubuntu6 is installed. Depends: gcc (>= 4:4.3.1-1ubuntu2) but 4:4.2.3-1ubuntu6 is installed. Depends: gcc-4.3 (>= 4.3.1-1) which is a virtual package. Resolving dependencies... The following actions will resolve these dependencies: Keep the following packages at their current version: build-essential [11.3ubuntu1 (hardy, now)] g++ [4:4.2.3-1ubuntu6 (hardy-updates, now)] g++-4.3 [Not Installed] libstdc++6-4.3-dev [Not Installed] Score is -9852 Accept this solution? [Y/n/q/?]

  Read the article

• Use Evernote’s Secret Debug Menu to Optimize and Speed Up Searching

  - by The Geek

  If your Evernote installation has become sluggish after adding thousands of notes, you might be able to speed it up a bit with this great tip from Matthew’s TechInch blog that uncovers a secret debug menu in the latest Windows client. It’s important to note that Evernote runs database optimization in the background automatically, so this really shouldn’t be necessary, but if your database is sluggish, anything is worth a shot, right Latest Features How-To Geek ETC How to Upgrade Windows 7 Easily (And Understand Whether You Should) The How-To Geek Guide to Audio Editing: Basic Noise Removal Install a Wii Game Loader for Easy Backups and Fast Load Times The Best of CES (Consumer Electronics Show) in 2011 The Worst of CES (Consumer Electronics Show) in 2011 HTG Projects: How to Create Your Own Custom Papercraft Toy Firefox 4.0 Beta 9 Available for Download – Get Your Copy Now The Frustrations of a Computer Literate Watching a Newbie Use a Computer [Humorous Video] Season0nPass Jailbreaks Current Gen Apple TVs IBM’s Jeopardy Playing Computer Watson Shows The Pros How It’s Done [Video] Tranquil Juice Drop Abstract Wallpaper Pulse Is a Sleek Newsreader for iOS and Android Devices

  Read the article

• Visual Studio 2008 Solution Setup

  - by Ben Griswold

  In this screencast, Noah and I demonstrate preferred practices around .NET solution setup, naming conventions and version control.  I consider this an introductory video.  If you’ve been around the block, you might want to skip this episode but if you’re a .NET/Visual Studio newbie, it may be worth a look.    YouTube - Visual Studio 2008 Solution Setup   This is one of our first screencasts.  Actually it is the very first.  If you have feedback, I’d love to hear it.

  Read the article

• Eloqua API Full Code Example in JAVA

  - by Shawn Spencer

  Is there anyone out there who has mastered to retrieve some data programmatically from Eloqua? First of all, I'm more or less a newbie, as far as JAVA. I can follow tutorials, take directions and will Google till my fingers bleed. I understand the basics and am slightly familiar with OOP. My main problem is that I have a Friday deadline (and tomorrow is Thanksgiving). At any rate, all the Eloqua code snippets (that I've been able to find) illustrate one aspect of a specific issue, and that's it. In my case, I would greatly appreciate a JAVA project of some sort, with all the necessary files to do web services (WSDL, SOAP and perhaps WSIT) and the main class and all that included. No, I don't want you to do my work for me! Just give me enough to find my way around, enter the information I need to retrieve and all that. I'll take it from there. Any pointers, links or suggestions?

  Read the article

• Annoying mistake when create web template in SharePoint 2010

  - by ybbest

  I get the error    Error occurred in deployment step ‘Add Solution’: Exception from HRESULT: 0x8107026E when deploying my web template project. It turns out that your name for the Web template name has to match the name of you WebTemplate section in the element.xml file. Please see the screenshot below, the highlighted two needs to be the same. It took me so long to figure out and I will keep here in case everybody else struggle. If you are a newbie with web template in SharePoint 2010, this blog post explains the details.

  Read the article

• Display problem with fresh install of 12.04

  - by Dan

  Just intalled Ubuntu 12.04 from CD and install went with no problems. After rebooting, I get the initial purple screen and then a black screen with mouse pointer and a few stray pixels at the bottom left of screen. Occasionally during the boot process, the purple screen comes back momentarily but then back to the black screen with the mouse pointer. When I finally give up and press the power button, the purple screen returns with the Shut Down box visible as it is shutting down. Any ideas? I have tried adding nomodeset after quiet splash, but no change. Possibly not doing it correctly, since I am somewhat of a newbie to linux. Thanks! Dan

  Read the article

• Second display running off laptop VGA not correctly positioned (offset left and up)

  - by Filthy Pazuzu

  I have black bars on the right and bottom of my display! I'm running my laptop's VGA output to an recognized as a It is 20", but the assumed 3" difference does not account for the incorrect position. Everything displays fine. It runs high-res video beautifully. But it's 3/4" offset left and an unreasonably annoying 1/4" offset up. I've tried going through the display's annoying & useless menu, but it doesn't have any way to adjust the position. I'm certainly no linux newbie, but on this Ubuntu (Pangolin, BTW) I can't figure out how to make simple positional display changes on Ubuntu. It's not only frustrating, it's a bit humiliating! So. Does anyone know of an app that will allow me to make basic display position alterations? ("App" - annoyingly trendy, but a useful word - no matter how grating.) Thanks, & Cheers, Paz

  Read the article

• Apache Prefork Configuration

  - by user1618606

  I'm newbie on VPS configuration. So, I've installed apache, php and mysql and now I need to know how to configure Prefork to optimize Apache. The system configuration is: CPU Cores 2 x 2 Ghz @ 4 Ghz RAM Memory 2304 MB DDR3 Burst Memory 3 GB DDR3 Disk Space 30 GB SSD Bandwidth 3 TB SwitchPort 1 Gbps Actually, after linux, mysql, apache and php, there are 250 MB memory in use. Well, I don't have idea to calculate. I saw in some websistes, some vars like: KeepAlive On KeepAliveTimeout 1 MaxKeepAliveRequests 100 StartServers 15 MinSpareServers 15 MaxSpareServers 15 MaxClients 20 MaxRequestsPerChild 0 or StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 How I could to do: Prefork or worker? Where and how the vars are placed? In httpd.conf?

  Read the article

• Compiler Dependencies [closed]

  - by asghar ashgari

  I'm a newbie researcher who's passion is programming languages (Web era). I'm wondering why all the Web frameworks and Web-based general purposes languages, have a huge number of dependencies when you want to install and then use (e.g., extend, alternate, etc.) their compilers. For example, Ruby on Rails or Scala. If I want to download their source code, and try to build it again, to me at least, feels like a can of worms. I have a MAC, so I need to install MACports, then update my XCode, then get the compiler source code that has bunch of other dependencies, then its hard to set things up; just to see the installed open-source compiler works fine.

  Read the article

• Tiled game: how to correct load background image ?

  - by stighy

  Hi, i'm a newbie. I'm trying to develop a 2d game (top-down view). I would like to load a standard background, a textured ground... My "world" is big, for example 3000px X 3000px. I think it is not a good idea to load a 3000px x 3000px image and move it... So, how is the best practice ? To load a single small image (64x64) and repeat it for N times ? If yes, ok, but how i can manage the "background" movement ? Thanks Bye!

  Read the article

• Why is there still so much offer for Perl programmers?

  - by user491444

  A quick search on monster.com on different scripting languages resulted on Perl having much more job opportunities than Python and Ruby (in Europe, I didn't check for the rest of the world), and since I'm just a newbie programmer I was wondering why is this? I've read everywhere that Python and Ruby are much better languages, and much more organized. Having coded in python and php myself, Perl's code seems so alien to me. Anyways, sorry for my poor English, it's my second language, and this is not a critique on the Perl language, I was just wondering whether it's a good idea to learn it at this point or not.

  Read the article

• MySQL fails to start after upgrade to 12.04?

  - by radek

  I'm a newbie on MySQL ground so bear with me. I've just finished upgrading 11.10 to 12.04. Everything seemed to work without any hiccups and all my software and settings are working fine. Apart from MySQL. When I try: sudo start mysql I receive an error: start: Job failed to start Where can I possibly diagnose what the problem is? And (hopefully) - how to sort it out? (I disabled automatic start following advice here if that is of some importance) Update 1: Both outputs of: cat /var/log/mysql.err cat /var/log/mysql.log are empty. Output of dmesg | grep mysql: [ 1401.785141] type=1400 audit(1335619832.181:25): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=16165 comm="apparmor_parser" [ 1401.791089] init: Failed to spawn mysql main process: unable to execute: No such file or directory Update 2: As indicated by AWinter below - it seemed that MySQL disappeared automagically after upgrade and had to be reinstalled.

  Read the article

• j2ee implementing security and using a framwork pros and cons

  - by Ismail Marmoush

  I'm a newbie to j2ee security, and i'm not j2ee expert either, though i'm really willing to put some effort and learn I've an application that i'm about to develop on Google App Engine (GAE) --with no time constraints. As you know GAE handles a lot of web container security issues for you, also I will be using openID for authentication exclusively (sessions will be handled by provider). GAE supports SSL which will help with confidentiality and integrity maybe. Authorization can be done through filters. I know reinventing the wheel is a mess, but I was looking forward to learn something about security and implement that in my new app. so what the pros and cons of using a framework like shiro, spring security, jguard etc or filling the rest of gaps on my own ?

  Read the article

• Setting up SANED with sane-test

  - by Enoon

  I'm trying to setup a network service for running saned (running the sane-test backend) on Ubuntu 12.10, running it on a virtualbox. I followed the directions found here: https://help.ubuntu.com/community/ScanningHowTo and i got to the point where if i use a front-end like xsane, or use the command scanimage -d test i get the desired behaviour. (i get the test image). But when i try to use the network demon to access the backend (from the localhost) i get Failed to connect. I used telnet on 127.0.0.1 6566 and i got the following error: saned: symbol lookup error: saned: undefined symbol: sanei_w_init I'm a linux newbie, so i could be making some stupid mistake. Any ideas on how to fix this? Thanks [update]After posting this question i logged out, logged back in and it worked. After a few days i tried again and it gave the same error as before. Any help?

  Read the article

• How to find data usage of a user on my website?

  - by Dharmik

  I have a website (project) where users get logged in, do their work and then they log out. I need to build a report that displays how much each person has used of data. (bandwidth, how much was downloaded in Kb, etc) So the process may be like counting start of usage from user login to user logout. I have seen a little about Webalizer and AWStats for something like this, But I am not sure how they work. I have tried Content-Length but some pages don't send content-length.I have also seen mod_bandwidth but still I am little confused. This process is needed for my site because now, our company is thinking of charging per usage and also bandwidth allocation for each users (according to their membership). I haven't worked with this type of tools, I am newbie in this matter. I have done only simple websites not any setting like this in Apache or Linux. My project is in Codeigniter.

  Read the article

• How to make a disk image and restore from it later?

  - by Torben Gundtofte-Bruun

  I'm a new Linux user. I've reinstalled my Wubi from scratch at least ten times the last few weeks because while getting the system up and running (drivers, resolution, etc.) I've broken something (X, grub, unknowns) and I can't get it back to work. Especially for a newbie like me, it's easier (and much faster) to just reinstall the whole shebang than try to troubleshoot several layers of failed "fixing" attempts. Coming from Windows, I expect that there is some "disk image" utility that I can run to make a snapshot of my Linux install (and of the boot partition!!) before I meddle with stuff. Then, after I've foobar'ed my machine, I would somehow restore my machine back to that working snapshot. What's the Linux equivalent of Windows disk imagers like Acronis True Image or Norton Ghost? Note: I found a similar question here.

  Read the article

• Permission denied after creating home partition

  - by Magnus

  I have recently created a separate home partition following this tutorial https://help.ubuntu.com/community/Partitioning/Home/Moving. Since I’m still a newbie in the Linux (struggling to learn) I felt happy when every thing seemed to work smooth. How ever, I realised after a while that I had lost all permission to my subfolders in the my home folder. I still can read/write the files placed directly in /home/magnus but I'm denied access to any of the subfolders. I just realised one more disturbing thing, probably related to home-partition story above: When I try cd ~/Music/ I get the message bash: cd: /home/magnus/Music/: Permission denied When I try: sudo cd ~/Music/ I get the result sudo: cd: command not found Seems strange that the cd command have been lost? What have I done wrong and is there a way to fix this? btw: I use Ubuntu 12.04 LTS Thanks for all the help! Magnus

  Read the article

• Ubuntu One Bookmark sync not working.

  - by Rob

  Everything in Ubuntu One sync works great except bookmark sync. I tried the wiki answer that said to run: killall beam.smp beam rm ~/.config/desktop-couch/desktop-couchdb.ini dbus-send --session --dest=org.desktopcouch.CouchDB --print-reply --type=method_call / org.desktopcouch.CouchDB.getPort This is what my terminal came back with: robin@robin-MIDWAY:~$ killall beam.smp beam beam: no process found robin@robin-MIDWAY:~$ rm ~/.config/desktop-couch/desktop-couchdb.ini rm: cannot remove `/home/robin/.config/desktop-couch/desktop-couchdb.ini': No such file or directory robin@robin-MIDWAY:~$ dbus-send --session --dest=org.desktopcouch.CouchDB --print-reply --type=method_call / org.desktopcouch.CouchDB.getPort Error org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. robin@robin-MIDWAY:~$ I'm a computer "newbie" so it's possible I'm doing something wrong, are there any tutorials out there on how to use the CouchDB? I have Bindwood installed.

  Read the article

• My VPS cannot send email

  - by ifdion

  Webmaster Newbie Question I have a low end vps (128MB RAM)running on Debian.I used a bash script by ilevkov to setup the site. After some trial and error, I managed to set up a WordPress on it. Just now I found out that my VPS can't send any email. I tested using the WordPress reset password email, and it shows The e-mail could not be sent. Possible reason: your host may have disabled the mail() function... After some Google session I noticed that I can send email from ssh. So I tried mail [email protected] Subject: Halo dion some message . and the result said EOT /usr/lib/sendmail: No such file or directory "/root/dead.letter" 9/243 . . . message not sent. The question How can I fix my VPS mail setting?

  Read the article

• Reviewing the "Oracle Coherence 3.5" Book

  - by [email protected]

    I received the "Oracle Coherence 3.5" book in ebook format from Packt. I have been going through the ebook and I am really amazed with it. It is definitely a great guide for both experienced users and newbies. It is extremely well structured, and it's easy to read and understand. Additionally, the book contains a lot of useful information, including basic and advanced concepts, best practices, very useful tips and very good examples too.   In summary, if you want to become a Coherence expert, even if you are a Coherence newbie, this book is the way to go!   Further information about the book can be seen at Packt.  

  Read the article

• Question about Target parameter of Matrix.CreateLookAt

  - by manning18

  I have a newbie question that's causing me a little bit of confusion when experimenting with cameras and reading other peoples implementations - does this parameter represent a point or a vector? In some examples I've seen people treat it like a specific point they are looking at (eg a position in the world), other times I see people caching the orientation of the camera in a rotation matrix and simply using the Matrix.Forward property as the "target", and other times it's a vector that's the result of targetPos - camPos and also I saw a camPos + orientation.Forward I was also just playing around with hard-coded target positions with same direction eg 1 to 10000 with no discernible difference in what I saw in the scene. Is the "Target" parameter actually a position or a direction (irrespective of magnitude)? Are there any subtle differences in behaviors, common mistakes or gotchas that are associated with what values you provide, or HOW you provide this paramter? Are all the methods I mentioned above equivalent? (sorry, I've only recently started and my math is still catching up)

  Read the article

• Exception while running an EJB program [closed]

  - by rajesh

  I'm a newbie to JEE. I'm trying a sample EJB3 program given in this website. while trying to run the client program, I get an exception like this [JBossManagedConnectionPool] Throwable while attempting to get a new connection: null org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.jboss.resource.JBossResourceException: Failed to register driver for: com.mysql.jdbc.Driver; - nested throwable: (java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from BaseClassLoader@4c19dd{VFSClassLoaderPolicy@35fd58{name=vfszip:/home/rajesh/workspace/jboss-5.1.0.GA/server/default/deploy/FirstJPAproject.jar/ domain=ClassLoaderDomain@17380fc{name=DefaultDomain parentPolicy=BEFORE parent=org.jboss.bootstrap.NoAnnotationURLClassLoader@76cbf7} roots=[MemoryContextHandler@9160338[path= context=vfsmemory://3j001-rho3wm-h8v3wfs4-1-h8v5pkwn-9u real=vfsmemory://3j001-rho3wm-h8v3wfs4-1-h8v5pkwn-9u], DelegatingHandler@25335794[path=FirstJPAproject.jar context=file:/home/rajesh/workspace/jboss-5.1.0.GA/server/default/deploy/ real=file:/home/rajesh/workspace/jboss-5.1.0.GA/server/default/deploy/FirstJPAproject.jar] I'm using Jboss5.1.0 and ejb 3.0 Please help me to get rid of this.

  Read the article

• How to configure Ubuntu with Standard TV?

  - by Ryan Wyan

  Ubuntu 8 version nVidia card with driver 96.43.10-0ubuntu1 /etc/X11/xorg.conf Section "Screen" Identifier "Television Screen" Device "Television Device" Monitor "Television" DefaultDepth 24 Option "TVOutFormat" "COMPONENT" Option "TVStandard" "PAL-B" SubSection "Display" Depth 24 Modes "640x480@40" EndSubSection EndSection Section "Module" Load "glx" Disable "dri2" EndSection Section "Device" Identifier "Default Device" Driver "nvidia" EndSection Television is Sharp FlatX Standard TV, its specifications can be found at http://www.amazon.com/Sharp-X-Flat-32F630-Flat-Screen-32/dp/B0000AKVAV There were other screen sections which I removed. The TV shows just distorted image with just particles of different colors. I tried different resolution but did not figure out. Kindly help me how to setup TV with Ubuntu. I am newbie to this and not aware of subtle technicalities. Thanks indeed.

  Read the article

< Previous Page | 62 63 64 65 66 67 68 69 70 71 72 73  | Next Page >