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  • Programming my first C++ program

    - by Jason H.
    I have a basic understanding of programming and I currently learning C++. I'm in the beginning phases of building my own CLI program for ubuntu. However, I have hit a few snags and I was wondering if I could get some clarification. The program I am working on is called "sat" and will be available via command line only. I have the main.cpp. However, my real question is more of a "best practices" for programming/organization. When my program "sat" is invoked I want it to take additional arguments. Here is an example: > sat task subtask I'm not sure if the task should be in its own task.cpp file for better organization or if it should be a function in the main.cpp? If the task should be in its own file how do you accept arguments in the main.cpp file and reference the other file? Any thoughts on which method is preferred and reference material to backup the reasoning?

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  • Removing surrounding noises from voice recording

    - by Peak Reconstruction Wavelength
    I have a wave file whose frequency spectrum looks like this. http://i.stack.imgur.com/2rRaS.png It contains audio, which I want to keep while removing the rest. The problem is that the surround noise changes, just those distinct voice patterns remain. I marked the voice patterns for clarity: http://i.stack.imgur.com/eLkBl.png What could an algorithm look like / a workflow in adobe audition look like that removes everything but the voice patterns? I think that the main characteristic is the line-shaped form over time. Loudness alone is not enough as the noise is loud aswell.

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  • Issues with nVidia GeForce 210 while watching movies

    - by David ???
    Ever since 10.04 I have been trying to resolve an issue with my graphics card - nVidia GeForce 210. I'm having issues when I watch movies on 10.10 - they are jumping all the time, even with Compiz disabled and when that is the only thing I am doing. I have tried the solution to How to get NVidia GeForce GT 210 drivers working on Lucid Lynx? but it didn't work. How can I fix this? Here are the steps I took: apt-get --purge remove xserver-xorg-video-nouveau edit /etc/default/grub to add the line GRUB_CMDLINE_LINUX="nouveau.modeset=0" sudo update-grub Reboot Download official Linux drivers from nVidia site. sh filename-of-downloaded-driver-package

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  • after upgrade from 10.04 to 10.10, no keyboard, cannot login

    - by avar
    Hello, just did upgrade from kubuntu 10.04 to 10.10.. after all done and reboot, when the login box shows up, my keyboard and laptop pad ( mouse ) dosn't work, (plugged in the usb mouse, it works sometimes) but never keyboard. i went to recovery , the boot hung up when it says : [ 17.704053] EXT4-fs (sda9): mounted filesystem with ordered data mode Begin: Running /scripts/local-bottom ... Done. Done. Begin: Running /scripts/init-bottom ... Done. stuck here. nothing works except ctrl+alt+del i tried booting from livecd and update-grub, also tried booting manually from grub command line, everytime it stuck at lines above .. so it's not grub problem . how to solve this ? if it is important, i have ATI mobility radeon HD 5470 card .

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  • Framework for Everything - Where to begin? [Longer post]

    - by SquaredSoft
    Back story of this question, feel free to skip down for the specific question Hello, I've been very interested in the idea of abstract programming the last few years. I've made about 30 attempts at creating a piece of software that is capable of almost anything you throw at it. I've undertook some attempts at this that have taken upwards of a year, while getting close, never releasing it beyond my compiler. This has been something I've always tried wrapping my head around, and something is always missing. With the title, I'm sure you're assuming, "Yes of course you noob! You can't account for everything!" To which I have to reply, "Why not?" To give you some background into what I'm talking about, this all started with doing maybe a shade of gray hat SEO software. I found myself constantly having to create similar, but slightly different sets of code. I've gone through as many iterations of way to communicate on http as the universe has particles. "How many times am I going to have to write this multi-threaded class?" is something I found myself asking a lot. Sure, I could create a class library, and just work with that, but I always felt I could optimize what I had, which often was a large undertaking and typically involved frequent use of the CRTL+A keyboard shortcut, mixed with the delete button. It dawned on me that it was time to invest in a plugin system. This would allow me to simply add snippets of code. as time went on, and I could subversion stuff out, and distribute small chunks of code, rather than something that encompasses only a specific function or design. This comes with its own complexity, of course, and by the time I had finished the software scope for this addition, it hit me that I would want to add to everything in the software, not just a new http method, or automation code for a specific website. Great, we're getting more abstract. However, the software that I have in my mind comes down to a quite a few questions regarding its execution. I have to have some parameters to what I am going to do. After writing what the perfect software would do in my mind, I came up with this as a list of requirements: Should be able to use networking A "Macro" or "Expression system" which would allow people to do something like : =First(=ParseToList(=GetUrl("http://www.google.com?q=helloworld!"), Template.Google)) Multithreaded Able to add UI elements through some type of XML -- People can make their own addons etc. Can use third party API through the plugins, such as Microsoft CRM, Exchange, etc. This would allow the software to essentially be used for everything. Really, any task you wish to automate, in a simple way. Making the UI was as also extremely hard. How do you do all of this? Its very difficult. So my question: With so many attempts at this, I'm out of ideas how to successfully complete this. I have a very specific idea in my mind, but I keep failing to execute it. I'm a self taught programmer. I've been doing it for years, and work professionally in it, but I've never encountered something that would be as complex and in-depth as a system which essentially does everything. Where would you start? What are the best practices for design? How can I avoid constantly having to go back and optimize my software. What can I do to generalize this and draw everything out to completion. These are things I struggle with. P.s., I'm using c# as my main language. I feel like in this example, I might be hitting the outer limit of the language, although, I don't know if that is the case, or if I'm just a bad programmer. Thanks for your time.

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  • Configuring Network without Default Gateway

    - by Homayoon
    I'm trying to connect my desktop and laptop using an ethernet connection. I usually configure network from the command line but this time I decided to give Network Manager a try, so I went to Network Connections, and selected manual IP configuration. At first I left the default gateway field blank, since I don't need a default gateway. Turned out network manager doesn't let me save the connection unless I enter that field, but entering a phony gateway messes up with my Internet connection. Anyway to do this setup?

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  • How to grub-install ignore specific drive/partition

    - by gsedej
    Is it possible to use grub-install or update-grub to just search on specific disk/partition? (or ignore specific)? I installed Ubuntu 12.04 on my hard drive, but i wished to do some testing on it without harming current installation, so I "rsynced" root partition (the only) to the USB partition (ext4). I did fix /etc/fstab on USB partition. The problem is that when I do grub-install /dev/sdb (usb) GRUB seems to confuse when UUIDs. Whatever I chose in GRUB it always boot from disk. In grub in edit mode I see that in two "UUID" lines are not the same. If I retype UUID from "first" to second "line" it boots from USB (as I wish). Is there any other way than fixing /boot/grub/grub.cfg each time? EDIT: the GRUB generated good when I booted from USB and grub-install from there, but question is still if it's possible ignore drives

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  • 12.10 live dvd no video input

    - by mark kirby
    Hi I have been trying install Ubuntu 12.10, but as soon as it gets past my bios and to the screen with the blinking line in the top left, I get a no video input message on my tv (like when you turn the tv on with nothing connected). I have used live dvd's of both betas, alphas and daily build all with exactly the same results. Has any one else had this ? Is there a fix ? Dose this mean I can never upgrade my Ubuntu again ? (12.04 works ive been using since beta) My pc ,while old, should run this fine CPU = 2x Intel P4 HT @ 3ghz GPU = Nvidia Geforce 310 via HDMI RAM = 2 Gb DDR 2 HDD = 2 x 7200 rpm SATA Please help me I use Ubuntu exclusively on my pc and would like to keep doings so.

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  • Profiling Startup Of VS2012 &ndash; JustTrace Profiler

    - by Alois Kraus
    JustTrace is made by Telerik which is mainly known for its collection of UI controls. The current version (2012.3.1127.0) does include a performance and memory profiler which does cost 614€ and is currently with a special offer for 306€ on sale. It does include one year of free upgrades. The uneven € numbers are calculated from the 799€ and 50% dicsount price. The UI is already in Metro style and simple to use. Multi process, attach, method recording filter are not supported. It looks like JustTrace is like Ants a Just My Code profiler. For stuff where you do not have the pdbs or you want to dig deeper into the BCL code you will not get far. After getting the profile data you get in the All Methods grid a plain list with hit count and own time. The method list for all methods is also suspiciously short which is a clear sign that you will not get far during the analysis of foreign code. But at least there is also a memory profiler included. For this I have to choose in the first window for Profiling Type “Memory Profiler” to check the memory consumption of VS.  There are some interesting number to see but I do really miss from YourKit the thread stack window. How am I supposed to get a clue when much memory is allocated and the CPU consumption is high in which places I should look? The Snapshot summary gives a rough overview which is ok for a first impression. Next is Assemblies? This gives you a list of all loaded assemblies. Not terribly useful.   The By Type view gives you exactly what it is supposed to do. You have to keep in mind that this list is filtered by the types you did check in the Assemblies list. The By Type instance list does only show types from assemblies which do not originate from Microsoft. By default mscorlib and System are not checked. That is the reason why for the first time my By Type window looked like The idea behind this feature is to show only your instances because you are ultimately responsible for the overall memory consumption. I am not sure if I do like this feature because by default it does hide too much. I do want to see at least how many strings and arrays are allocated. A simple namespace filter would also do it in my opinion. Now you can examine all string instances and look who in the object graph does keep a reference on them. That is nice but YourKit has the big plus that you can also look into the string contents.  I am also not sure how in the graph cycles are visualized and what will happen if you have thousands of objects referencing you. That's pretty much it about JustTrace. It can help the average developer to pinpoint performance and memory issues by just looking at his own code and instances. Showing them more will not help them because the sheer amount of information will overwhelm them. And you need to have a pretty good understanding how the GC and the CLR does work. When you have a performance issue at a customer machine it is sometimes very helpful to be able a bring a profiler onto the machine (no pdbs, …) and to get a full snapshot of all processes which are in the problematic use case involved. For these more advanced use cased JustTrace is certainly the wrong tool. Next: SpeedTrace

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  • How to get numpad out of "mouse emulation" mode?

    - by Jonik
    My numeric keypad has somehow got into a "mouse emulation" mode where the number keys just move the mouse pointer around (2 = down; 8 = up, 6 = right, etc). Anyone know how to make it work normally again? None of the other numpad keys work either (I first noticed the whole thing when Ctrl + ÷ (numpad division sign) no longer produced "line comment" in IntelliJ IDEA). Toggling num lock doesn't affect this (though the indicator LED works as usual). I'm using GNOME on Lucid Lynx (10.4).

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  • VMMap - awesome memory analysis tool

    VMMap is a process virtual and physical memory analysis utility. It shows a breakdown of a process's committed virtual memory types as well as the amount of physical memory (working set) assigned by the operating system to those types. Besides graphical representations of memory usage, VMMap also shows summary information and a detailed process memory map. Powerful filtering and refresh capabilities allow you to identify the sources of process memory usage and the memory cost of application features. Besides flexible views for analyzing live processes, VMMap supports the export of data in multiple forms, including a native format that preserves all the information so that you can load back in. It also includes command-line options that enable scripting scenarios. VMMap is the ideal tool for developers wanting to understand and optimize their application's memory resource usage. span.fullpost {display:none;}

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  • OutOfBounds Exception when creating a PolygonShape using jbox2d

    - by B3nGr33ni3r
    So here's the deal, i'm parsing a file that contains the vertices for a polygon, that i want to create in box2d. I create a new PolygonShape() and then call .set() giving it a defined array of Vec, and that defined array's .length property. I expected this to work, since the documentation for jbox2d says this method takes a Vec array, and the count of Vec objects in that array. However, it errors out, and it seems to be unrelated to my code. The error i get is Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 8 at org.jbox2d.collision.shapes.PolygonShape.set(PolygonShape.java:174) and, upon looking at that line in the jbox2d svn repository, i still cannot figure out the issue. Any help is appreciated!

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  • how to find 3g modem signal strength with out AT commands?

    - by neckTwi
    when i try to find signal strength of my modem using AT+CSQ, the usb device is locked by the network manager. To find the signal strength with AT+CSQ i have to first disable network connection using #nmcli nm wwan off to unlock the device inode /dev/ttyUSBX. Is there any nmcli option to get signal strength or any other option? EDIT The gdbus object for NetworkManager don't have any method like getSignalStrength. Network manager is locking device file preventing to use AT commands. nm-applet was able to display signal strength in system tray. so there should be a way to get signal strength form network manager! nmcli is command line counter part of nm-applet. Can i get signal strength using nmcli? nothing about signal strength is mentioned in its man pages.

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  • Shutdown, Restart, Halt issues, not powering off system

    - by Jalomba
    Before any one says search around, I have, to no avail. I can't seem to get it working after trying every fix out there. So basically, when I turn off my laptop it shuts down fine but the last line is "System will now halt" but power never gets cut, I've tried shutdown -P and shutdown -h same result. Then when I try restart it goes through the same process but hangs on "System will now restart" But I can't figure it out, I am running full Ubuntu with no other Operating Systems. Any tips?

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  • Do you find it a challenge diagnosing issues with creating Requisitions to Purchase Orders Automatically?

    - by LindaJ-Oracle
    Do you find it a challenge diagnosing issues when there are problems with creating Requisitions to Purchase Orders automatically?  Well it has become much easier with the newly enhanced 'CREATEPO Workflow - Data Collection Script' available in Doc ID 1415918.1.Run the diagnostic and the output will include all the necessary information for problem solving; including: 1) Profile Option Values2) Default values for CREATEPO attributes3) Requisition header and line information4) Document Setup for requisitions5) Requisition approval workflow activity, attributes, errors and validation checks6) CREATEPO overall workflow activity, attributes, errors and validation checks7) CREATEPO requisition processing workflow activity, attributes, errors and validation checks8) CREATEPO approval workflow activity, attributes, errors and validation checks9) PO_WF_DEBUG messages10) Purchase order / Blanket release informationMore importantly now valuable errors and warnings are provided with links to the solutions!So you can potentially resolve the issue on your own, or if you still need Supports help proactively run the diagnostic before logging a Service Request and the data collection will be available for the analyst immediately.  Add Doc ID 1415918.1 to your favorites today.

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  • IntelliTrace collector error Some or all identity references could not be translated

    - by Tarun Arora
    If you are running the IntelliTrace stand alone collector to collect the trace against an Application Pool which is running under the identity “.\<username>” then you are likely to run into the following exception, Start-IntelliTraceCollection : Some or all identity references could not be translated. At line:1 char:29 + Start-IntelliTraceCollection <<<<  "FabrikamFiber.Web" C:\IntelliTraceCTP\collection_plan.ASP.NET.trace.xml C:\Intell iTraceLogs     + CategoryInfo          : NotSpecified: (:) [Start-IntelliTraceCollection], IdentityNotMappedException     + FullyQualifiedErrorId : System.Security.Principal.IdentityNotMappedException,Microsoft.VisualStudio.IntelliTrace    .PowerShell.StartIntelliTraceCollectionCommand   Steps to reproduce the issue The application pool “FabrikamFiber.Web” is using the identity “.\Admin”   Workaround Change the identity of the application pool to <MachineName|Domain>\<UserName>. So, in the above work around if I change the identity to “Production\Admin” then the IntelliTrace does not throw an exception. This error has been reported to Microsoft and it is expected that it will be fixed in one of the future releases. Enjoy!

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  • Build & Deployment Guide for Service Bus Relay Project

    - by Michael Stephenson
    Ive recently published a sample guide based on a real-world project where we implemented an on-premise WCF routing solution to connect SAAS applications to our on premise line of business applications. The guide will discuss: How we configured and setup the infrastructure How we setup the on-premise server to listen to the service bus What software we used How we configured Windows Azure This contains some useful contextual information around the reference scenario and hopefull this will be very useful to others undertaking similar projects. Ive also included this on the technet wiki page for Windows Azure Service Bus resources: http://social.technet.microsoft.com/wiki/contents/articles/13825.windows-azure-service-bus-resources.aspx

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  • Programmaticaly change lightdm autologin session type

    - by marcinpz
    I have problem with lightdm setting autologin session type (using my config tool). Lightdm logs into previously selected session. I see that autologin-session is UNIMPLEMENTED in version 1.2.1. Maybe I can somehow cheat lightdm? but it seems program writes actual state when stopping and overwrites my changes to /home/user/.dmrc and /var/cache/lightdm/user.dmrc. At the current I have two sessions: default and kiosk. in /etc/lightdm/lightdm.conf I have line: user-session=desktop but after I logged into kiosk session it starts all the time. Changing .dmrc and /var/cache/lightdm/dmrc/user.dmrc doesn't work.

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  • How can I install an old version of libc on 12.04 and is it safe to do so?

    - by mathematician1975
    I am building an application on 12.04 and I need to run it on an embedded device. The device has libc-2.8.90.so on it and my dev machine has libc-2.15.so on it. I would like to install libc-2.8.90 onto my dev machine and attempt to link it to my application. I have searched at the Ubuntu software centre for libc-2.8.90 but I cannot find anything resembling it. Is there a way to install this on my machine from command line?? Also will my system be safe having 2 installed versions of libc at the same time? Can it lead to any instability?

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  • Why does 'quickly package' fail with "An error has occurred when creating debian packaging"?

    - by slashcrack
    I've got a big problem with packing my quickly application for the Ubuntu App Showdown. When I try to package or submit my application, I get some warnings: quickly package ........ ---------------------------------- WARNING: syntax errors in facebook/FacebookWindow.py: encoding declaration in Unicode string (FacebookWindow.py, line 0) WARNING: the following files are not recognized by DistUtilsExtra.auto: AUTHORS~ facebook/AboutFacebookDialog.py~ facebook/FacebookWindow.py~ facebook/PreferencesFacebookDialog.py~ facebook/__init__.py~ facebook_lib/AboutDialog.py~ facebook_lib/Builder.py~ facebook_lib/PreferencesDialog.py~ facebook_lib/Window.py~ facebook_lib/__init__.py~ facebook_lib/facebookconfig.py~ facebook_lib/helpers.py~ setup.py~ ---------------------------------- An error has occurred when creating debian packaging ERROR: can't create or update ubuntu package ERROR: package command failed Aborting What does the second warning mean? How do I solve those warnings? I want to submit my app to the Ubuntu App developer Showdown into my PPA and it doesn't work. Thanks for any answer.

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  • Gnome question> Nautilus only starts as root user

    - by user7978
    Hello. I am running Ubuntu 10.04 62-bit. When I attempt to start Nautilus from the command line, it does not appear -- although a PID is generated. As root/sudo, I can start Nautilus fine. One note: I run e16 as the windows manager, so I do not use Nautilus to draw my desktop. However, even under this configuration, Nautilus used to run fine as a "regular" user. The permissions for Nautilus are the same as the other packages in /usr/bin. I believe this is a Gnome issue, but I'm fumbling at this point.

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  • How to auto mount partition on startup xubuntu?

    - by Bas
    I want to auto mount all my partitions on startup. But i can't get it to work as i'm new to xubuntu. This is how my fstab file looks like: proc /proc proc nodev,noexec,nosuid 0 0 #Entry for /dev/sda1 : UUID=3bf842ea-923b-43fe-b5f9-066fc920aaec / ext4 errors=remount-$ #Entry for /dev/sdb1 : UUID=F0C859BDC8598330 /media/Bas ntfs-3g defaults,locale=en_US.UTF-8 $ #Entry for /dev/sda3 : UUID=146213A76D02F7AD /media/sda3 ntfs-3g defaults,locale=en_US.UTF-8 $ UUID=1C33A98704D941F1 /media/sda3 ntfs-3g defaults,locale=en_US.UTF-8 $ #Entry for /dev/sda5 : UUID=ba48c631-5652-4ce7-85a3-bda96b353ca7 none swap sw 0 $ The last line I added myself but it's not working. I spend the whole day trying to figure this out without success. So can anyone help me with this? Thanks in advance

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  • Why I switch from Asana.com

    - by Anirudha
    Originally posted on: http://geekswithblogs.net/anirugu/archive/2013/10/24/why-i-switch-from-asana.com.aspxI used Asana.com from 1-2 years. have nice experience to use it. it’s not so easy. When I started using it it’s make many confusion. Now I switch from it.   When I first time see I really didn’t understand how to make a private list. There is a icon on top click on it and make it private. After doing that I still not sure if this is working. There is a lot of confusion made that time. I discuss too much to figure out small small things. The UI is interesting but so hard to understand.  What I am looking for is just a list that I can hold private. I would like to share it only if I put them shared and put email address of person to hold them same list. Few days ago I see that My Win8 phone have a app that call Microsoft OneNote. The good thing of this MS app is that I can record my voice in the app. If someone want to make a list for future then he just need to say and this can be recorded.  This is awesome when you feel that Mobile keypad is just not so fast as a normal regular keyboard.   Google docs are another good option to handle this thing. Just make a word file and use it. share it with friend with many option. One best thing is this app have very simply UI then any other apps.   One more alternative is https://trello.com which you hear from joel on their blog http://www.joelonsoftware.com/items/2011/09/13.html There are many html5 and browser based, mobile based app. Many of them support multi platform feature. this means you can have them from PC to your Pocket. One good thing we all wanted is offline. if you are not online thing will be saved and push back to server when you will be online.   The biggest problem with some apps are they are attractive easy but hard to learn. Their one feature are not clearly defined what he does. This make frustration and confusion to user. When app are not simple to use people start stop trying to learn it. That’s all the problem I have with asana.com If you don’t want to try anything then what about Sticky Notes that is part of Windows 7. This app are still usable since you can store the text on it. If you know any good app to make a task list that provide access from tablet/mobile then put comment here. In the whole world of app there is a lot of app for doing this same thing differently. I mention few of them here. I hope this is nice to describe it.   Thanks for read my post.

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  • upgrade from ubuntu 12.04 to 12.10 failed, now loads "grub rescue"

    - by Greg
    I attempted to upgrade from 12.04 to 12.10 last night. Installation seemed to go fine, and this morning I had a message like "restart now to complete installation". So I restart, get an initial "Loading Operating System ..." message, followed by "error: file not found. Then it kicks into "grub rescue" mode. Previously I have this running as a dual boot (window 7) and I just ran the upgrade to 12.10 via the update manager in ubuntu. Any ideas on what is going on here, or what the error means? I know my way around the command line, but this is above my pay grade. Thanks for any advice.

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  • Java Error Using Loops [migrated]

    - by Shaun
    I am facing a error in Java using the method Loops. I am a basic user learning Java and I am following a book with teaches you the basics of Java. I have this problem when I use this code in my Java Program. It gives me an red line under my code. Here's my code: public class Game{ public static void main(String[] args){ for (int dex = 0; dex < 1000; dex++) { if (dex % 12 == 0) { System.out.println(“#: “ + dex); } } } } I have been following the tutorials correctly. I am a bit lost where I have gone or done wrong. I have my public static codes and such as you'd require in any Java programming. Here's are the error given): Cannot resolve method: 'Println(? , ?)' Expression expected ',' or ')' expected Unexpected Token ';' expected

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