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• Should I add parameters to instance methods that use those instance fields as parameters?

  - by john smith optional

  I have an instance method that uses instance fields in its work. I can leave the method without that parameters as they're available to me, or I can add them to the parameter list, thus making my method more "generic" and not reliable on the class. On the other hand, additional parameters will be in parameters list. Which approach is preferable and why? Edit: at the moment I don't know if my method will be public or private. Edit2: clarification: both method and fields are instance level.

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• Good and easy way to share files on local machine

  - by jb

  I would like to have a directory that has following properties: Many users can copy files into it These files can be deleted/changed by these users (user A can delete/modify file that was copied into this directory) it cant be done using normal file permissions (because permissions are retained on copy). Here is what I found on the net: brainstorm idea blueprint Some use cases: Sharing music on local machine Simple git repository sharing (just make a bare repository writeable to many people) --- i know that there are solutions like gitosis Allow many developers to modify test instance of php app without giving them root (i guess they would copy files) --- I'm leading a team of nonprofit junior developers and I need to keep that one simple! EDIT AFAIK setting SGID bit is not enugh, it only affects newly created files --- and basic workflow for these use cases ivnolves copying and other operations (which cleave file's gid unchanged)

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• What is the best policy for allowing clients to change email?

  - by Steve Konves

  We are developing a web application with a fairly standard registration process which requires a client/user to verify their email address before they are allowed to use the site. The site also allows users to change their email address after verification (with a re-type email field, as well). What are the pros and cons of having the user re-verify their email. Is this even needed? EDIT: Summary of answers and comments below: "Over-verification annoys people, so don't use it unless critical Use a "re-type email" field to prevent typos Beware of overwriting known good data with potentially good data Send email to old for notification; to new for verification Don't assume that the user still has access to the old email Identify impact of incorrect email if account is compromised

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• The How-To Geek Guide to Audio Editing: Basic Noise Removal

  - by YatriTrivedi

  Laying down some vocals?  Starting your own podcast?  Here’s how to remove noise from a messy audio track in Audacity quickly and easily. This is the second part in our series covering how to edit audio and create music using your PC. Be sure to check out the first part in the series, where we covered the basics of using Audacity, and then check out how to add MP3 format support as well Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 Take Better Panoramic Photos with Any Camera Make Creating App Tabs Easier in Firefox Peach and Zelda Discuss the Benefits and Perks of Being Kidnapped [Video] The Life of Gadgets in Price and Popularity [Infographic] Apture Highlights Turns Your Cursor into a Search Tool Add Classic Sci-Fi Goodness to Your Desktop with the Matrix Theme for Windows 7

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• lock screen before hibernating [12.04]

  - by Emanuel Ey

  So when i hibernate my laptop the screen doesn't lock automatically. To solve this if changed /etc/acpi/powerbtn.sh to contain: su - myUsername -c "gnome-screensaver-command -l" sudo pm-hibernate exit 0 When running this file from a command line it works as intended (ie, lock the screen and then hibernate). Unfortunately, when pressing the power button, it still just hibernates without locking the screen -what am I missing? EDIT: I've added the line whoami>>~/Desktop/test.txt to verify which user is executing the /etc/acpi/powerbtn.shscript. When pressing the power button, the file test.txt is created, but is empty. From this i conclude that the script is in fact being called when pressing the power button. What i do not understand is how the output of whoami can be empty...

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• Doing an SNES Mode 7 (affine transform) effect in pygame

  - by 2D_Guy

  Is there such a thing as a short answer on how to do a Mode 7 / mario kart type effect in pygame? I have googled extensively, all the docs I can come up with are dozens of pages in other languages (asm, c) with lots of strange-looking equations and such. Ideally, I would like to find something explained more in English than in mathematical terms. I can use PIL or pygame to manipulate the image/texture, or whatever else is necessary. I would really like to achieve a mode 7 effect in pygame, but I seem close to my wit's end. Help would be greatly appreciated. Any and all resources or explanations you can provide would be fantastic, even if they're not as simple as I'd like them to be. If I can figure it out, I'll write a definitive how to do mode 7 for newbies page. edit: mode 7 doc: http://www.coranac.com/tonc/text/mode7.htm

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• Do you actively look for a better job?

  - by Ace

  ...Even though you're basically happy where you are? I've been thinking for a while that it might be a good idea to look around, but how do you go about doing it? Do you hide the fact from your employer? What do you tell the recruiters? Can you play your current employer out against the new recruiter or vice versa, and how do you do that? Any pitfalls? Edit: I've bolded the questions that people haven't really answered yet.

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• Eclipse does not want to use openjdk-7

  - by umop aplsdn

  I am on a new installation of Ubuntu. I install all the updates, and then restart. I then install openjdk-7-jdk from apt, then I restart. Then I install eclipse-platform, eclipse-jdt, and eclipse-cdt. I then launch Eclipse. When I check the build path for my imported projects it decided that during the eclipse-platform installation to install openjdk-6. Okay, cool. The problem is that I can't use openjdk-7 AT ALL. There is no option to use it in the build path library manager. How can I change it so it uses openjdk-7? I tried reinstalling it already, didn't do anything. Just told me it was already installed. EDIT: Failed at the title, fixed.

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• How Can I Get My USB TV Tuner To Work

  - by Foxface

  I have a KWorld UB445-U ATSC Hybrid TV Stick. I've tried MythTV, but it kept crashing when I was trying to set it up, and didn't get anywhere with it. I've tried VLC and just tried Kaffiene. I'm not sure how to work VLC or Kaffeine to accept my TV. Can someone help me with it? EDIT: Code: foxface@Toshiba-Satellite-L775:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 003: ID 04f2:b289 Chicony Electronics Co., Ltd Bus 002 Device 006: ID 1b80:e421 Afatech Bus 003 Device 002: ID 13fd:1e40 Initio Corporation

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• chromium-browser --proxy-server debugging

  - by user3678068

  Many places online have pointed out to configure chromium proxy via command can be achieve with the following line chromium-browser --proxy-server=[username]:[password]@[host]:[port] but I got this result on every request. Here's the output in the command line right after executing the previous command. (They do not appear to be relevant. There are no new command line output when I try to visit a page) libGL error: failed to authenticate magic 30 libGL error: failed to load driver: vboxvideo ATTENTION: default value of option force_s3tc_enable overridden by environment. [29551:29551:0606/160459:ERROR:sandbox_linux.cc(268)] InitializeSandbox() called with multiple threads in process gpu-process I have double checked that the proxy credential works with the foxyproxy chrome plugin. What else can I try to figure this out? [Edit] Going to chrome://net-internals/#proxy and reading "Effective proxy settings" if I do chromium-browser with no flags, I get Use DIRECT connections. Source: GSETTINGS if chromium-browser --proxy-server=[host]:[port], I get a message box requesting to login, and under "Effective proxy settings": Proxy server: [host]:[port] if chromium-browser --proxy-server=[user]:[pass]@[host]:[port], "Effective proxy settings" shows: Use DIRECT connections

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• AABB > AABB collision response?

  - by Levi

  I'm really confused about how to fix this in 3d? I want it so that I can slide along cubes but without getting caught if there's 2 adjacent cubes. I've gotten it so that I can do x collision, with sliding, and y, and z, but I can't do them together, probably because I don't know how to resolve it correctly. e.g. [] [] []^ []O [] O is the player, ^ is the direction the player is moving, with the methods which I was trying I would get stuck between the cubes because the z axis was responding and kicking me out :/. I don't know how to resolve this in all 3 direction, like how would I go about telling which direction I have to resolve in. My previous methods involved me checking 4 points in a axis aligned square around the player, I was checking if these points where inside the cubes and if they where fixing my position, but I couldn't get it working correctly. Help is appreciated. edit: pretend all the blocks are touching.

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• Is there a way to display navmesh agent path in Unity?

  - by Antoine Guillien

  I'm currently making a prototype for a game I plan to develop. As far as I did, I managed to set up the navigation mesh and my navmeshagents. I would like to display the path they are following when setDestination() is fired. I did some researches but didn't find anything about it. EDIT 1 : So I instantiate an empty object with a LineRenderer and I have a line bewteen my agent and the destination. Still I've not all the points when the path has to avoid an obstacle. Furthermore, I wonder if the agent.path does reflect the real path that the agent take as I noticed that it actually follow a "smoothier" path. Here is the code so far : GameObject container = new GameObject(); container.transform.parent = agent.gameObject.transform; LineRenderer ligne = container.AddComponent<LineRenderer>(); ligne.SetColors(Color.white,Color.white); ligne.SetWidth(0.1f,0.1f); //Get def material ligne.gameObject.renderer.material.color = Color.white; ligne.gameObject.renderer.material.shader = Shader.Find("Sprites/Default"); ligne.gameObject.AddComponent<LineScript>(); ligne.SetVertexCount(agent.path.corners.Length+1); int i = 0; foreach(Vector3 v in p.corners) { ligne.SetPosition(i,v); //Debug.Log("position agent"+g.transform.position); //Debug.Log("position corner = "+v); i++; } ligne.SetPosition(p.corners.Length,agent.destination); ligne.gameObject.tag = "ligne"; So How can I get the real coordinates my agent is going to walk throught ?

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• {solved}stream TV audio through mic input?

  - by Drew S

  I have a gaming headset and use it with a few devices and am looking for a way to stream my audio through my pc from tv through the mic jack and then through the optical out. the system is detecting sound from the mic port. I would put this directly through the headset but that port is being used by my ps3. So I would like a way as I said to stream it through my pc to my headset, and it be great to have an integrated volume option in the sound drop down too. [TV - mic - Ubuntu - headset(optical out)] Ubuntu 13.04 EDIT I found part of a solution. Solution by installing pavucontrol and using "pactl load-module module-loopback latency_msec=1" I can stream the audio through my pc.

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• How can I remove gradients from Elementary theme?

  - by John

  I really don't like the gradients in the Elementary theme and I was wondering if there is a way to remove them from applications like Nautilus-Elementary, Postler, Dexter, etc. I've tried commenting out the Apps/[Application].rc in /usr/share/themes/elementary/gtk-2.0/gtkrc but it doesn't work. It still leaves the gradients in their place. I'm a big fan of the other controls in the theme: the scroll bar, the way it borders gedit and the buttons, and I'd like to keep these features, but I don't like the way it styles its windows. EDIT: The gradients I'm talking about are the ones at the top of the window. Some examples: Nautilus-Elementary: Postler: Rhythmbbox: Transmission: I'd like to create a sort of matte look, similar to this, which was done using Orta: Nautilus-Elementary: Postler: Rhythmbox: Transmission: I'd like a flat color, preferably without the line separating the top part of the application with the bottom.

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• Where can I get a cheap database, no web hosting needed

  - by PhilipK

  I'm building an application which requires a fairly small online MySQL database. I don't need any web hosting. What are some cheap options for an online database? *Edit(a bit more about what I'll be using it for) The database itself is very small it contains market statistics for 5 weeks of time. Once a week the data will be updated, so that it always contains the most recent 5 weeks. Then I will use the data in that to create an XML file which is generated with PHP. The XML file will need to be accessed hundreds-thousands of times per month.*

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• How to disable touchpad while using trackpoint on a Thinkpad?

  - by January

  Thinkpads (e.g. X230 that I'm using) have both a trackpoint and a touchpad. The touchpad is disabled when typing. However, when I'm using the trackpoint, I often touch the touchpad as well, and generate mouse clicks I'd like to avoid. Does anyone have an idea how disable mouse-clicks on touchpad when trackpoint is in use? EDIT: also, can someone explain how the option of disabling touchpad when typing works? What is being done behind the scenes? Is it an xinput configuration command, and if yes, which one?

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• How would it be if browsers natively *hosted* JavaScript frameworks? [closed]

  - by João Ramos

  More than 20 million websites nowadays are running jQuery and more than 1/5 of the top million websites are also doing so. What if we, as designers and developers, could take advantage of locally cached JavaScript libraries like jQuery, Prototype, script.aculo.us, etc? Wouldn't it be great if we could provide users with faster websites and experiences? EDIT: My apologies, I ment to ask how hould it be if browsers hosted JavaScript frameworks, not support them. Actually, there's no sense in my previous question. Sorry for that.

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• How to avoid HDD spin up at system start? (Ubuntu from SSD)

  - by Oliver

  Thanks to hdparm -B1 /dev/sdb my HDD does no longer spin up when powered up on boot. But after completing the BIOS POST messages and starting Ubuntu the HDD gets a signal over the SATA data cable and spins up. Leaving the data cable (but still with plugged in SATA power cable) let the system boot up completely from my SSD without spinning up the HDD. What causes the HDD to spin up? Maybe Grub2? Edit: nope, doesn't seem to be Grub2 that spins up the drive. I just set up Grub to show its menu without timer. Nothings happens until I hit the Ubuntu standard boot option, then a few seconds later the drive spins up.

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• Naming boolean field that is a verb

  - by dnhang

  In Java, by convention getter and setter for boolean fields will be isField() and setField(). This works perfectly fine with field names that are adjectives like active, visible, closed, etc. But how do I name a field that has meaning of a verb, like haveChildren? Add _ing to the verb (havingChildren), maybe? Edit: to clarify, I don't have control of the method names (getter and setter), they are auto-generated by the IDE. So what I need is an appropriate field name so that when the IDE generate a getter for it, it make senses. For example, hasChildren is a perfect field name, but when the IDE generate the getter for the field it would be isHasChildren. How do I solve this?

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• Applying languages / locale selectively: is it possible?

  - by Aron Rotteveel

  I am a Dutch user and prefer the my local date & time format, system wide. I have no trouble speaking or understanding English and find it very useful to have the rest of my system configured in English to make my life easier when I need to Google a term, for example. Is it possible to apply the a local date/time/currency/etc. format to the system, while maintaining English menu & dialog captions? EDIT: output from locale and posted screens of current settings: LANG=en_US.utf8 LANGUAGE=en LC_CTYPE="en_US.utf8" LC_NUMERIC="en_US.utf8" LC_TIME="en_US.utf8" LC_COLLATE="en_US.utf8" LC_MONETARY="en_US.utf8" LC_MESSAGES="en_US.utf8" LC_PAPER="en_US.utf8" LC_NAME="en_US.utf8" LC_ADDRESS="en_US.utf8" LC_TELEPHONE="en_US.utf8" LC_MEASUREMENT="en_US.utf8" LC_IDENTIFICATION="en_US.utf8" LC_ALL=

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• Rain effect looks like snowfall effect?

  - by Nikhil Lamba

  i am making a game in that game i want rain effect i am little bit far from this right now i am doing like below particleSystem.addParticleInitializer(new ColorInitializer(1, 1, 1)); particleSystem.addParticleInitializer(new AlphaInitializer(0)); particleSystem.setBlendFunction(GL10.GL_SRC_ALPHA, GL10.GL_ONE); particleSystem.addParticleInitializer(new VelocityInitializer(2, 2, 20, 10)); particleSystem.addParticleInitializer(new RotationInitializer(0.0f, 30.0f)); particleSystem.addParticleModifier(new ScaleModifier(1.0f, 2.0f, 0, 150)); particleSystem.addParticleModifier(new ColorModifier(1, 1, 1, 1f, 1, 1, 1, 3)); particleSystem.addParticleModifier(new ColorModifier(1, 1, 1f, 1, 1, 1, 1, 6)); particleSystem.addParticleModifier(new AlphaModifier(0, 1, 0, 3)); particleSystem.addParticleModifier(new AlphaModifier(1, 0, 1, 125)); particleSystem.addParticleModifier(new ExpireModifier(50, 50)); scene.attachChild(particleSystem); But its looks like snowfall effect what changes i can do for make it rain effect please correct me EDIT : here is link for snapshot http://i.imgur.com/bRIMP.png

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• How do I teach bash in Ubuntu some curse words?

  - by NitinAb

  When bash encounters an unknown command(word?) it does this : The program 'hello' can be found in the following packages: * hello * hello-debhelper Try: sudo apt-get install <selected package> what I would like to know is how this is done so I can edit it or add something before it to cross check the unknown word from a home grown dictionary which would have phrase:reply pairs that can then be sent to output. I am guilty of not looking enough for it around .. but the few bash guides I tried digging up didn't have anything on this. Maybe I am looking at the wrong places .. any pointers? And yes I am doing this so every time I type wtf when a program fails , I want something nice thrown back at me...

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• Ubuntu 12.04 GTK Problem

  - by Dana Holt

  I am running Ubuntu 12.04 and compiled and installed GTK 3.4 to go through some GTK developer tutorials. Installing this version of GTK has caused problems with Unity. All system dialogs and top bar now have a different (older) look, and when I try to launch Nautilus I get the following message: Gtk-Message: Failed to load module "canberra-gtk-module" Initializing nautilus-open-terminal extension Initializing nautilus-dropbox 1.4.0 Initializing nautilus-gdu extension nautilus: symbol lookup error: nautilus: undefined symbol: ubuntu_menu_proxy_get I have run make uninstall on the newer version of GTK and reinstalled just about every package I can think of, but I am still having the same problem. How can I repair the default Ubuntu GTK libraries? EDIT Also, I noticed that my desktop icons are gone (launcher works), and I can't interact with the desktop. I can't drag any shortcuts to it, etc.

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• Is eCPMs dropping by about 50% in January a usual behavior on Google AdSense?

  - by Andrew G. Johnson

  So I just got semi-serious about running some AdSense sites over the past 6 months and the eCPM's have hovered between 1.38 and 1.42 [yes it's that close] when I look at the eCPM for each month. Obviously some deviation day to day but pretty damn close to a buck forty in aggregate. So far for January I am sitting at 0.80 for an eCPM. I know it's not a huge sample size but the daily pageviews are fairly consistent [actually a bit higher] than where they were in December. I am trying to justify this by thinking that somehow a lot of ad buyers buy inventory for the year and have to get setup to do another big buy now that it's a new calendar year but that thought isn't close to comforting. Is this happening to anyone else? EDIT: I run a lot of websites and the ratios of pageviews are about the same this month to last month but just to be clear the eCPM I posted is for 20 websites in a variety of niches, it doesn't accurately depict any one domain.

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• Do we set the bar too high by requiring that code tests not suffer from buffer overflow?

  - by brice

  We are currently recruiting for a Junior Developer position working mainly in C on Linux. As part of the process, we require candidates to complete a code test at their leisure in C. So far we have rejected two candidates on the basis that their code, although readable and in one case rather idiomatic, suffered from buffer overflow errors due to unbounded buffer writes. Are buffer overflows acceptable from a graduate developer? Are we setting the bar too high? What is the expected capability of graduate/Junior engineers? [Edit]: We explicitly ask for error-checked, production quality code. We provide a test & build framework for the candidates

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