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  • Use unnamed object to invoke method or not?

    - by Chen OT
    If I have a class with only only public method. When I use this class, is it good to use unnamed object to invoke its method? normal: TaxFileParser tax_parser(tax_file_name); auto content = tax_parser.get_content(); or unnamed object version: auto content = TaxFileParser(tax_file_name).get_content(); Because I've told that we should avoid temporary as possible. If tax_parser object is used only once, can I call it a temporary and try to eliminate it? Any suggestion will be helpful.

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  • How to access shared folders in Ubuntu VM(Oracle Virtualbox) and link them to the home folder(Answered)

    - by Njihia
    I have configured a shared folder between the Windows host and Ubuntu guest. The folder mounts at start up but its empty(It also has a padlock sign.). I have to run the command below to access its content(the padlock sign disappears). sudo mount.vboxsf media ~/media How can i configure it to be run automatically at start up. I've tried adding to the start up programs but nothing happens. Am new to Linux so try to put your answer in a layman's language. Thanks.

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  • Painfully Slow iPhone Backup?

    - by Christopher House
    And now for something completely different... For the past couple of weeks, I've not been able to sync my iPhone.  What happens is that I plug it in to my computer, start the sync and two hours later, iTunes shows it's about 75% complete.  After some googling, I tried a few things like deleting old backups, changing some settings, etc, but nothing seemed to help.  Tonight I decided I'd try deleting all the photos and videos on my phone.  Sure enough, that did the trick.  I'm now able to successfully sync in a reasonable amount of time.

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  • Pros and Cons of Session Replication

    - by techsjs2012
    Do I really need Session Replication? I am working on a number of web projects for a firm. Most of the projects are about one or two pages of input and then doing a save to a mysql database. Very Basic projects. My SA's are pushing to try to get session replication working in JBoss but I don't really see any need for it and all of its overhead. We need load balancing and clustering so if the server does go down we can move the new requests to the backup service but I am not to big in session replication. This is very low volume projects. In my eyes what is the odds of a user being in the project as the server goes down on the one or two pages. I need to convince the SAs that session replication is an un-necessary complication in this instance. I am looking for pros and cons of session replication so that I can better structure my argument.

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  • Was a Big Fish in a Little Pond, Am Now a Little Fish in a Big Pond. How Do I Grow? [closed]

    - by Ziv
    I've finished high school where I was in the top three in my class, I studied a little and there too I was pretty much Big Fish in a bigger pond than high school. Now I got into my first job in a very big company, there are some incredibly talented programmers and researchers here (mostly in departments not related to mine) and for the first time I really feel like I'm incredibly average - I do not want to be average. I read technical books all the time, I try to code on my personal time but I don't feel like that's enough. What can I do to become a leading programmer again in this big company? Is there anything specifically that can be done to make myself known here? This is a very big company so in order to advance you must be very good and shine in your field.

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  • Installed 7zip. Not working. And when removing, it says to remove Fileroller as well

    - by rainlover
    I installed 7zip today from software centre but it won't showed up in launch bar (side bar). I did a lot but failed to open 7zip "window" from any where. I clicked it in dash but then I was sent to software center showing that it is installed. I just don't know how to start it. Nor it is showing in right-click menu. I actually wanted to open flareget which is in .tar.gz. Ubuntu's default archive opener isn't opening it and showing me this: And if I try to remove 7zip, it's saying file-roller should also be removed: What's going on and what's solution?

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  • No Sound from Shared Media

    - by Travis
    I have a shared media folder that I have all of my mp3's in. When I try to play them using Ubuntu, I get no sound, but the media player (Rhythmbox, Exaile, etc) display that they are playing the file, it looks like everything is playing but no sound. I have checked and rechecked the volume levels of the system and each application and I see no issues. If I move a file to the local drive, it plays just fine. I do sound checks while the file is playing and I get audio (front left, front right) from the test but not from the media file that I am playing. Any help would be greatly appreciated.

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  • I don't have the password to update Ubuntu

    - by Steve
    I have bought a laptop with Ubuntu 12.04, which runs fine but wants to update. I don't have the password and it won't let me update anything. I have downloaded 12.04 in order to re-install it and it tells me it isn't suitable for my processor. The machine is a Dell latitude D505. I tried downloading the i386 version and on booting with the disc, I get: This kernel requires features not present on CPU. pae. Unable to boot. All I'm trying to do is to let software updater do it's stuff but as it asks for a password, I can't proceed. I've tried changing password in root shell but that doesn't work. Any ideas? Nothing seems to be working with this problem, so maybe I'll just wait for the next official release and try again.

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  • I've changed my URL schema. How do I tell Google to index the new schema and forget the old one?

    - by growse
    I had a site where the urls were constructed like this /index.php/Topic /index.php/AnotherTopic These were indexed in google, and search results returned that pointed to these. However, I've recently replatformed that site, and reconfigured it so the above urls would be: /index.php?title=Topic /index.php?title=AnotherTopic The original urls are returning 404s. The site is linking to the correct URL schema internally, but Google is retaining the original schema in its search results. I've updated and resubmitted the sitemap which only contains the new schema. Also, Google's webmasters tool is going slightly bananas at the fact there's now a spike in 404 errors in its crawl results. What would be the best approach to get Google to 'forget' about the old schema, and instead index the new schema? Should I try blocking /index.php/ in robots.txt? Should I be returning 301 codes instead of 404 for the original urls?

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  • Override Built-In Maverick Keyboard Shortcuts

    - by jrc03c
    Having used the Command+M keyboard shortcut to minimize windows in OS X, I'd like to use the same functionality in Ubuntu 10.10. When I try, though, it only brings up the "communications" section of the indicator applet; like so: In the Keyboard Shortcuts preferences, I have set as the minimize shortcut "Mod4+M", which I got by capturing the Apple "Command" key and the "M" key. I find no other shortcut using this key combination in Keyboard Shortcuts, and yet I cannot get the window to minimize when using it. Does anyone know how to override Ubuntu's default usage of this key combination? Thanks!

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  • Nautilus uses different permissions for mounted drives

    - by farhad0011
    I've written two bash scripts to give read-only or read/write access to my NTFS partition: read-only access: sudo umount /media/Data_Drive/ sudo mount -t ntfs-3g -o ro,user,auto,nls=utf8,umask=0000,uid=1000 /dev/sda2 /media/Data_Drive read/write access: sudo umount /media/Data_Drive/ sudo mount -t ntfs-3g -o rw,user,auto,nls=utf8,umask=0000,uid=1000 /dev/sda2 /media/Data_Drive It works perfectly if I only use terminal to work with the files. It also works with Nautilus in read-only mode but not in the read/write mode. In fact, Nautilus gives me an error when I try to copy a file to Data_Drive saying "The destination is read-only". More funny, when I look at the permissions (by right-clicking on Data_Drive and then properties-permissions) I have all the required permissions to write a file in Data_Drive! I am so confused why Nautilus behaves strangely. I appreciate if anybody could solve the mystery!

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  • Self-Executing Anonymous Function vs Prototype

    - by Robotsushi
    In Javascript there are a few clearly prominent techniques for create and manage classes/namespaces in javascript. I am curious what situations warrant using one technique vs. the other. I want to pick one and stick with it moving forward. I write enterprise code that is maintained and shared across multiple teams, and I want to know what is the best practice when writing maintainable javascript ? I tend to prefer Self-Executing Anonymous Functions however I am curious what the community vote is on these techniques. Prototype : function obj() { } obj.prototype.test = function() { alert('Hello?'); }; var obj2 = new obj(); obj2.test(); Self-Closing Anonymous Function : //Self-Executing Anonymous Function (function( skillet, $, undefined ) { //Private Property var isHot = true; //Public Property skillet.ingredient = "Bacon Strips"; //Public Method skillet.fry = function() { var oliveOil; addItem( "\t\n Butter \n\t" ); addItem( oliveOil ); console.log( "Frying " + skillet.ingredient ); }; //Private Method function addItem( item ) { if ( item !== undefined ) { console.log( "Adding " + $.trim(item) ); } } }( window.skillet = window.skillet || {}, jQuery )); //Public Properties console.log( skillet.ingredient ); //Bacon Strips //Public Methods skillet.fry(); //Adding Butter & Fraying Bacon Strips //Adding a Public Property skillet.quantity = "12"; console.log( skillet.quantity ); //12 //Adding New Functionality to the Skillet (function( skillet, $, undefined ) { //Private Property var amountOfGrease = "1 Cup"; //Public Method skillet.toString = function() { console.log( skillet.quantity + " " + skillet.ingredient + " & " + amountOfGrease + " of Grease" ); console.log( isHot ? "Hot" : "Cold" ); }; }( window.skillet = window.skillet || {}, jQuery )); //end of skillet definition try { //12 Bacon Strips & 1 Cup of Grease skillet.toString(); //Throws Exception } catch( e ) { console.log( e.message ); //isHot is not defined } I feel that I should mention that the Self-Executing Anonymous Function is the pattern used by the jQuery team. Update When I asked this question I didn't truly see the importance of what I was trying to understand. The real issue at hand is whether or not to use new to create instances of your objects or to use patterns which do not require constructors of the use of the new keyword. I added my own answer, because in my opinion we should make use of patterns which don't use the new keyword. For more information please see my answer.

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  • wkhtmltopdf displaying text as blocks

    - by making3
    We're using wkhtmltopdf in a web project (nodejs/compoundjs). We've gotten it working how we wanted on our machines (using the --use-xserver switch). However, when I try to run this on our Ubuntu server 12.04 (without the ubuntu-desktop package), the PDF cannot use the switch. When we disable the switch, the PDF displays any characters as blocks (image below). How do I resolve this without installing ubuntu-desktop and running x server? I've found liberation fonts, which installing ttf-liberation and fonts-liberation did not help. And urw-fonts, but I have yet to find an Ubuntu equivalent. EDIT: It just hit me, this doesn't matter if I'm on the server or not. On my development machine (Ubuntu 13.04 desktop), I can run the following, which produces the same blocks: wkhtmltopdf http://google.com google1.pdf While this prints out the pdf properly: wkhtmltopdf --use-xserver http://google.com google2.pdf My version of wkhtmltopdf is 0.12.0.

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  • Wireless very slow. Changed mode from Infracstructure to Ad-hoc

    - by Dan
    This is my first time using Linux so go easy on me :) I downloaded and installed Mint 11 couple of days ago and I was having trouble connecting to internet with wifi. Actually it says it connects but does not load any webpages. I tried to get help from this model of laptop owners (Asus G73SW) who uses mostly Ubuntu but they said they never had any problem right from install. So I decided to try out Ubuntu 11.04. Same thing. BUT now I get internet after going into Network Connection edit and changing the Mode from Infracstructure to Ad-Hoc. I get load pages but very slow. And if I'm not mistaken, as I was writing this paragraph, I might have been disconnected. However the wifi bar is full. Please help me this newb because I really want to keep using Ubuntu but I might just have to go back to W7 if nothing can be done. Thank you!

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  • NVidia control panel SSAO not working

    - by János Turánszki
    I am just before implementing screen space ambient occlusion in my game, but first I wanted to try enabling it from NVidia control panel only to find out that it is greyed out so that I can not enable it. With this I could enable SSAO for some other games, but not every one. I know this technique requires the depth buffer and (optionally) a normal map texture to sample information from which I already have access to given I have a deferred renderer working. After that I actually thought to roll back to a previous version of my game which still uses forward rendering so the depth buffer is actually bound to the backbuffer which I render to from the get-go so that maybe the NVidia control panel would somehow make use of it. It was not working with forward rendering either. (I also tried FXAA in the control panel and that works - but it doesn't need any depth or normal texture) So my question is that how can I enable this function so that it would work by enabling it in the NVidia control panel?

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  • How do I install Adobe Acrobat Pro From Web Premium CS4,....?

    - by RedBunny
    I am Running the new Ubuntu 12.04 Beta 2, and am looking to install Adobe Acrobat Pro from My CS4 Web Premium CD. Whenever I try and install the setup.exe I get the following error: Internal Error - invalid parameters recieved. in a Wine Program Crash box. I am running wine 1.5 and have tried 1.4 also. I have used winetricks and PlayOnLinux, and cannot get it to install with either program. Any help would be appreciated,.... Also If I cant get it installed does anyone know any programs that can link .PDF files to MySql databases in Linux ,....? I really need this to be able to host some web forms for work. Thanx in Advance,..... ~RedBunny

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  • What is supposed to happen when you install Gmail webapp?

    - by ubuntico
    I have installed Gmail (and other Google as well) webapps into Ubuntu 14.04 64-bit. After that I rebooted the system hoping that webapps will integrate into the system. But after logging back to the system, I see no changes. If I click on email envelope (top bar), I don't see my inbox. Also if I try to search email in Dash via gmail keyword, nothing happens as well. Am I using this wrongly or webapps don't work? What was supposed to happen when I install webapps? Note: I did start the Gmail app from Dash and logged in

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  • Getting "System program problem detected" pops up regularly after upgrade

    - by grrrbytes
    This started to happen immediately after I had rebooted the first time after doing a system upgrade. It first starts with a dialogue that says "System program problem detected". Then when I try to hit 'report problem' not much happens. I am led through a dialogue that always ends up the problem cannot be solved. I am aware this is not a lot of information, however I'm not sure which information I need to publish and how should I obtain it to debug this problem. Here's a screenshot!

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  • Tips to Increase PC Performance in Windows 7

    The Windows 7 Task Manager is a solid tool that gives you an overview of what is happening in terms of running processes on your computer. While the Task Manager may appear simple to the naked eye it can be used in several ways to help identify possible sources of problematic performance. This tutorial will offer some tips that you can employ with the Task Manager to help improve your PC s performance.... Rolling out Agile Development? Try now! Explore Agile on an integrated platform for Agile and traditional development

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  • Application starts as Terminal but not as a Desktop entry

    - by Dcm1405
    I just installed SQL Anywhere 12 and can start Sybase Central from the terminal with the command line below without errors: /opt/sqlanywhere12/bin32/scjview However, when I try to start it from a desktop entry I am receiving two error messages that could be something incorrectly defined in the desktop below: #!/usr/bin/env xdg-open [Desktop Entry] Version=1.0 Type=Application Terminal=false Icon[en_US]=gnome-panel-launcher Name[en_US]=Sybase Central Exec=/opt/sqlanywhere12/bin32/scjview Comment[en_US]= Name=Sybase Central Comment= Icon=gnome-panel-launcher Here are the error messages: (unable to post the error images) cannot find libsyblib610_r.so cannot find libulscutil12.so Since the application can be successfully started from a terminal window I was wondering how I could have it setup as a desktop entry as well.

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  • How to remove shells?

    - by MyNameIs...
    I installed few shells that I wanted to try out on Ubuntu 12.04, but none of them worked at all. It could be that I installed them all at the same time, meaning the OS didn't get a chance to work everything out, but either way, they didn't work. I would now like to remove them. The one's that I installed are Fluxbox, OpenBox, XFCE, and MATE. I installed them through the help of this site. Everything seemed to have been working properly until I actually tried to use the shells and nothing loaded at all. Except for Fluxbox, I think that one worked. I want to know of any way to repair or perhaps just remove the packages entirely. I might have already removed them because I did the apt-get remove command on all of them, but they were still in the list on the login screen.

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  • Rules of Holes #5: Seek Help to Get Out of the Hole

    - by ArnieRowland
    You are moving along, doing good work, maintaining a steady pace. All seems to be going well for you. Then BAM!, a Hole just grabbed you. How the heck did that happen? What went wrong? How did you fall into a Hole? Definitely, you will want to do a post-mortem and try to tease out what misteps led you into the Hole. Certainly you will want to use this opportunity to enhance your Hole avoidance skills. But your first priority is to get out of this Hole right NOW.. Consider the Fifth Rule of Holes...(read more)

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  • How to get the Dash and HUD to appear. (and stop Unity spewing error messages.)

    - by Ubuntiac
    I just installed Ubuntu 12.04 on my wifes Dell Inspiron 1501, which uses an R300 ATI graphics chip. Neither the Dash or HUD appear when pushing the appropriate key. When I try unity --reset & in the terminal, I see that over and over it's spitting out: r300: CS space validation failed. (not enough memory?) Skipping rendering. This is just after starting Ubuntu with no apps open, so I find it hard to believe that just rendering the Dash / HUD is completely blowing out the VRAM. Any suggestions on getting this working? /usr/lib/nux/unity_support_test -p shows OpenGL vendor string: X.Org R300 Project OpenGL renderer string: Gallium 0.4 on ATI RS480 OpenGL version string: 2.1 Mesa 8.0.2 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes All sections say "YES"

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  • How to setup Ubuntu as a backup server for my Windows computer?

    - by derek
    I took my old computer (AMD 5600+, 2GB RAM, 880gt, 250GB SATA, etc) and decided to jump and try Ubuntu for the first time. I have very very little knowledge (Red Hat when I was younger) with Linux in general. My main desktop is Windows 7 and my plan is to use the Ubuntu computer as a file server sort of speak. I want to be able to setup back up schedules from my Windows PC to the Ubuntu PC (plan on leaving this on 24/7 to double as a Seedbox) How do I go on to doing this?

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  • What are the biggest barriers to walking the MOTU/developer path?

    - by maco
    For those who are not MOTU (people who maintain the Universe and Multiverse software repositories) and do not have plans of the "I will apply to MOTU by $date" variety: What keeps you and others like you from trying to become MOTU? What makes you think you couldn't become one? I'm referring to both social and technological barriers. EDIT: I'm only saying MOTU because it's a pretty generic group, but "why aren't you packaging / patching and intending to eventually try for upload rights?" is an even more general version.

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