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• Very large log files, what should I do?

  - by Masroor

  (This question deals with a similar issue, but it talks about a rotated log file.) Today I got a system message regarding very low /var space. As usual I executed the commands in the line of sudo apt-get clean which improved the scenario only slightly. Then I deleted the rotated log files which again provided very little improvement. Upon examination I find that some log files in the /var/log has grown up to be very huge ones. To be specific, ls -lSh /var/log gives, total 28G -rw-r----- 1 syslog adm 14G Aug 23 21:56 kern.log -rw-r----- 1 syslog adm 14G Aug 23 21:56 syslog -rw-rw-r-- 1 root utmp 390K Aug 23 21:47 wtmp -rw-r--r-- 1 root root 287K Aug 23 21:42 dpkg.log -rw-rw-r-- 1 root utmp 287K Aug 23 20:43 lastlog As we can see, the first two are the offending ones. I am mildly surprised why such large files have not been rotated. So, what should I do? Simply delete these files and then reboot? Or go for some more prudent steps? I am using Ubuntu 14.04.

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• What alternative is better to diagram this scenario?

  - by Mosty Mostacho

  I was creating and discussing a class diagram with a partner of mine. To simplify things, I've modify the real domain we're working on and made up the following diagram: Basically, a company works on constructions that are quite different one from each other but are still constructions. Note I've added one field for each class but there should be many more. Now, I thought this was the way to go but my partner told me that if in the future new construction classes appear we would have to modify the Company class, which is correct. So the new proposed class diagram would be this: Now I've been wondering: Should the fact that in no place of the application will there be mixed lists of planes and bridges affect the design in any way? When we have to list only planes for a company, how are we supposed to distinguish them from the other elements in the list without checking for their class names? Related to the previous question, is it correct to assume that this type of diagram should be high-level and this is something it shouldn't matter at this stage but rather be thought and decided at implementation time? Any comment will be appreciated.

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• Using EC2 instance as main development platform

  - by David

  My problem I am working as a consultant for various companies. Each company provides me with a laptop with their software on and I also have my own, where I have my development environment. I tend to buy a new laptop every second year and find myself spending lots of time configuring and installing software. I also spend a lot of time waiting for my laptop to process things. To solve all these issues, I am now considering using EC2 (running windows instances) as my main development platform and just access this from any PC I happen to be at. I calculated that running the Large instance (cheapest 64-bit) for 8 hours a day for a year costs me 960$ per year, which is acceptable. I imagine that when I approach the workplace each day, I will make a single tap on my phone to fire up the instance, so it is ready when I get to work. I should have different icons on my phone to fire up the various instance types. The same software should of course automatically be loaded on the various hardware (sometimes I would even need their instance with 68.4 GB of memory). Another advantage is that if I am having a specific problem with my instance, I could fire up another instance and have someone look into the problem and update the image. My question: Does anyone have experience with such a setup on EC2? What kind of problems do you foresee?

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• (Abstract) Game engine design

  - by lukeluke

  I am writing a simple 2D game (for mobile platforms) for the first time. From an abstract point of view, i have the main player controlled by the human, the enemies, elments that will interact with the main player, other living elements that will be controlled by a simple AI (both enemies and non-enemies). The human player will be totally controlled by the player, the other actors will be controlled by AI. So i have a class CActor and a class CActorLogic to start with. I would define a CActor subclass CHero (the main player controlled with some input device). This class will probably implement some type of listener, in order to capture input events. The other players controlled by the AI will be probably a specific subclass of CActor (a subclass per-type, obviously). This seems to be reasonable. The CActor class should have a reference to a method of CActorLogic, that we will call something like CActorLogic::Advance() or similar. Actors should have a visual representation. I would introduce a CActorRepresentation class, with a method like Render() that will draw the actor (that is, the right frame of the right animation). Where to change the animation? Well, the actor logic method Advance() should take care of checking collisions and other things. I would like to discuss the design of a game engine (actors, entities, objects, messages, input handling, visualization of object states (that is, rendering, sound output and so on)) but not from a low level point of view, but from an high level point of view, like i have described above. My question is: is there any book/on line resource that will help me organize things (using an object oriented approach)? Thanks

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• organization of DLL linked functions

  - by m25

  So this is a code organization question. I got my basic code working but when I expand it will be terrible. I have a DLL that I don't have a .lib for. Therefore I have to use the whole loadLibrary()/getprocaddress() combo. it works great. But this DLL that i'm referencing at 100+ functions. my current process is (1) typedef a type for the function. or typedef short(_stdcall *type1)(void); then (2) assign a function name that I want to use such as type1 function_1, then (3) I do the whole LoadLibrary, then do something like function_1 = (type1)GetProcAddress(hinstLib, "_mangled_funcName@5"); normally I would like to do all of my function definitions in a header file but because I have to do use the load library function, its not that easy. the code will be a mess. Right now i'm doing (1) and (2) in a header file and was considering making a function in another .cpp file to do the load library and dump all of the (3)'s in there. I considered using a namespace for the functions so I can use them in the main function and not have to pass over to the other function. Any other tips on how to organize this code to where it is readable and organized? My goals are to be able to use function_1 as a regular function in the main code. if I have to a ref::function_1 that would be okay but I would prefer to avoid it. this code for all practical purposes is just plane C at the moment. thanks in advance for any advice!

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• Simple algorithm for a sudoku solver java

  - by user142050

  just a quick note first, I originally asked this question on stack overflow but was refered here instead. I've been stuck on this thing for a while, I just can't wrap my head around it. For a homework, I have to produce an algorithm for a sudoku solver that can check what number goes in a blank square in a row, in a column and in a block. It's a regular 9x9 sudoku and I'm assuming that the grid is already printed so I have to produce the part where it solves it. I've read a ton of stuff on the subject I just get stuck expressing it. I want the solver to do the following: If the value is smaller than 9, increase it by 1 If the value is 9, set it to zero and go back 1 If the value is invalid, increase by 1 I've already read about backtracking and such but I'm in the early stage of the class so I'd like to keep it as simple as possible. I'm more capable of writing in pseudo code but not so much with the algorithm itself and it's the algorithm that is needed for this exercise. Thanks in advance for your help guys.

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• Upcoming: Oracle Advanced Benefits Advisor Webcasts Announced

  - by user793553

  Oracle support is pleased to announce a new webcast covering the Open Enrollment functionality in Oracle Advanced Benefits.  The webcast is repeated on three different dates, in order to make attendance easier, whatever timezone you operate in. These one-hour sessions are recommended for technical and functional users who will be having an Open Enrollment cycle in the next 12 months.  The session will review the best proactive practices recommended by Oracle Support regardless of when your Open Enrollment takes place.  It will review planning, patching, data corruption and critical checklists. TOPICS WILL INCLUDE: Planning Ahead for Open Enrollment testing Required Patches Test performance Avoid major patching/updates Data corruption issues A short, live demonstration (only if applicable) and question and answer period will be included.  Below is the schedule for the webcasts.  The same can be found in the MyOracleSupport Document Advisor Webcast Current Schedule Doc ID 740966.1 Please follow the links to register for your chosen session. Webcast Topic and Description Registration Details Date and Time Best Benefits Practices for Open Enrollment Session 3   Doc ID 1489318.1 October 17, 2012 at 16:00 US EST Best Benefits Practices for Open Enrollment Session 4   Doc ID 1489319.1 October 31, 2012 at 16:00 US EST Product Enhancements in R12.1.3 RUP 5 Session 2   Doc ID 1489320.1 November 07, 2012 at 16:00 US EST

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• iOS chat application design, sending/relaying the message over to the end user

  - by AyBayBay

  I have a design question. Let us say you were tasked with building a chat application, specifically for iOS (iOS Chat Application). For simplicity let us say you can only chat with one person at a time (no group chat functionality). How then can you achieve sending a message directly to an end user from phone A to phone B? Obviously there is a web service layer with some API calls. One of the API calls available will be startChat(). After starting a chat, when you send a message, you make another async call, let us call it sendMessage() and pass in a string with your message. Once it goes to the web service layer, the message gets stored in a database. Here is where I am currently stuck. After the message gets sent to the web service layer, how do we then achieve sending/relaying the message over to the end user? Should the web server send out a message to the end user and notify them, or should each client call a receiveMessage() method periodically, and if the server side has some info for them it can then respond with that info? Finally, how can we handle the case in which the user you are trying to send a message to is offline? How can we make sure the end user gets the packet when he moves back to an area with signal?

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• CA For A Large Intranet

  - by Tim Post

  I'm managing what has become a very large intranet (over 100 different hosts / services) and will be stepping down from my role in the near future. I want to make things easy for the next victim person who takes my place. All hosts are secured via SSL. This includes various portals, wikis, data entry systems, HR systems and other sensitive things. We're using self signed certificates which worked o.k. in the past, but are now problematic because: Browsers make it harder for users to understand exactly what is going on when a self signed certificate is encountered, much less accept them. Putting up a new host means 100 phone calls asking what "Add an exception" means What we were doing is just importing the self signed certs when we set up a new workstation. This was fine when we only had a dozen to deal with, but now its just overwhelming. Our I.T. Department has classified this as ya all's problem, all we get from them is support for switch and router configurations. Beyond the user having connectivity, everything else is up to the intranet administrators. We have a mix of Ubuntu and Windows workstations. We'd like to set up our own self signed CA root, which can sign certificates for each host that we deploy on the intranet. Client browsers would of course be told to trust our CA. My question is, would this be dangerous and would we be better off going with intermediate certificates from someone like Verisign? Either way, I still have to import the root for the intermediate CA, so I really don't see what the difference is? Other than charging us money, what would Verisign be doing that we could not, beyond protecting the root CA cert so it can't be used to make forgeries?

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• Location of development solutions on disk - Common or upto the individual

  - by dreza

  In our team meeting today a senior member brought up the proposal that we should be having a common location/structure for our development solutions. A couple of his points were: Making it common meant when talking about projects and emailing stuff everyone is on the same wavelength and knows where to look. If there is ever the need to hard code a location path then it will work across all developers pc's. He had a more few points to back up his suggestion but I unfortunately got distracted during the discussion and so didn't hear all of them. I have no issue with the idea and can see it's merits but I was wondering if it is common or even recommended that all developers place their code in the same folder structure. Or do developers like to have the flexibility of location solutions where-ever they want? We currently use SVN for our version control. In this case his recommendation was to place all code in: c:\Work\Development\<Customer>\<project>\Code\<solution>\ the code I guess actual path is irrelevant for this question but added for completeness.

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• Why doesn't the "scroll bar" on my laptop touchpad work?

  - by Antonio Guzman Belmont

  EDIT, from Google translate: Well buy my laptop with windows 7 and the touchpad has some arrows up and down to q deslises finger on the right side as if the q scroll the scroll bar handles, recently installed Ubuntu 11.10 and there is also served by the touchpad scroll so to speak but then asked me and I did update (late hours) and longer term attempt q dezlizar my finger down the right side of the touchpad and now low, anyone can tell me I can do about q to q and windows function as and ubuntu 11.10, I think now I have ubuntu 4.12 EDIT.2 (minimal tidy-up) I bought my laptop with Windows 7 installed. The touchpad has up/down arrows on the right side, as if this would scroll. When I installed Ubuntu 11.10, I was able to use this touchpad scroll function. I recently did an update (at some late hours) and i can no longer use right side of the touchpad to scroll. Can anyone tell me how to get the same function as I had in Windows and Ubuntu 11.10 ? I think I now have Ubuntu 12.04 Original question: Bueno compre mi lap con windows 7 y en el touchpad tiene unas flechitas arriba y abajo para q deslises el dedo del lado derecho como si fuese el scroll q maneja la barra de desplazamiento, recientemente instale ubuntu 11.10 y ahi servia tambien el scroll del touchpad por asi decirlo pero luego me pidio actualizar y lo hice(tardo horas) y ya q termino intento dezlizar mi dedo para bajar por la parte derecha del touchpad y ahora no baja, alguien me puede decir q puedo hacer al respecto para q funcione como e windows y en ubuntu 11.10, ahora tengo ubuntu 12.04 creo

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• Best way to implement mouse-based movement in MMOG

  - by fiftyeight

  I want to design an MMO where players click the destination they want to walk to with their mouse and the character moves there, similar to Runescape in this manner. I think it should be easier than keyboard movement since the client can simply send the server the destination each time the player clicks on a destination. The main thing I'm trying to decide is what to do when there are obstacles in the way. It's no problem to implement a simple path-finding solution on the client, the question is if the server will do path-finding as well, since it'll probably take too much Computation power from the server. What I though is that when there is an obstacle the client will send only the first coordinate it plans to go to and then when he gets there he'll send the next coordinate automatically. For example if there is a rock in the way the character will decide on a route that is made of two destinations so it goes around the rock and when it arrives at the first destination it sends the next coordinate. That way if the player changes destination is the middle he won't send unnecessary information. Is this a good way to implement it and is there a standard way MMOGs usually do it? EDIT: I should also mention that the server will make sure all movements are legal and there aren't any walls in the way etc. In the way I wrote it should be quite easy since all movements will be sent in straight lines so the server will just check there aren't any obstacles along that line.

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• Checking preconditions or not

  - by Robert Dailey

  I've been wanting to find a solid answer to the question of whether or not to have runtime checks to validate input for the purposes of ensuring a client has stuck to their end of the agreement in design by contract. For example, consider a simple class constructor: class Foo { public: Foo( BarHandle bar ) { FooHandle handle = GetFooHandle( bar ); if( handle == NULL ) { throw std::exception( "invalid FooHandle" ); } } }; I would argue in this case that a user should not attempt to construct a Foo without a valid BarHandle. It doesn't seem right to verify that bar is valid inside of Foo's constructor. If I simply document that Foo's constructor requires a valid BarHandle, isn't that enough? Is this a proper way to enforce my precondition in design by contract? So far, everything I've read has mixed opinions on this. It seems like 50% of people would say to verify that bar is valid, the other 50% would say that I shouldn't do it, for example consider a case where the user verifies their BarHandle is correct, but a second (and unnecessary) check is also being done inside of Foo's constructor.

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• How can rotating release managers improve a project's velocity and stability?

  - by Yannis Rizos

  The Wikipedia article on Parrot VM includes this unreferenced claim: Core committers take turns producing releases in a revolving schedule, where no single committer is responsible for multiple releases in a row. This practice has improved the project's velocity and stability. Parrot's Release Manager role documentation doesn't offer any further insight into the process, and I couldn't find any reference for the claim. My first thoughts were that rotating release managers seems like a good idea, sharing the responsibility between as many people as possible, and having a certain degree of polyphony in releases. Is it, though? Rotating release managers has been proposed for Launchpad, and there were some interesting counterarguments: Release management is something that requires a good understanding of all parts of the code and the authority to make calls under pressure if issues come up during the release itself The less change we can have to the release process the better from an operational perspective Don't really want an engineer to have to learn all this stuff on the job as well as have other things to take care of (regular development responsibilities) Any change of timezones of the releases would need to be approved with the SAs and: I think this would be a great idea (mainly because of my lust for power), but I also think that there should be some way making sure that a release manager doesn't get overwhelmed if something disastrous happens during release week, maybe by have a deputy release manager at the same time (maybe just falling back to Francis or Kiko would be sufficient). The practice doesn't appear to be very common, and the counterarguments seem reasonalbe and convincing. I'm quite confused on how it would improve a project's velocity and stability, is there something I'm missing, or is this just a bad edit on the Wikipedia article? Worth noting that the top voted answer in the related "Is rotating the lead developer a good or bad idea?" question boldly notes: Don't rotate.

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• Is implementing an interface defined in a subpackage an anti-pattern?

  - by Michael Kjörling

  Let's say I have the following: package me.my.pkg; public interface Something { /* ... couple of methods go here ... */ } and: package me.my; import me.my.pkg.Something; public class SomeClass implements Something { /* ... implementation of Something goes here ... */ /* ... some more method implementations go here too ... */ } That is, the class implementing an interface lives closer to the package hierarchy root than does the interface it implements but they both belong in the same package hierarchy. The reason for this in the particular case I have in mind is that there is a previously-existing package that groups functionality which the Something interface logically belongs to, and the logical (as in both "the one you'd expect" and "the one where it needs to go given the current architecture") implementation class exists previously and lives one level "up" from the logical placement of the interface. The implementing class does not logically belong anywhere under me.my.pkg. In my particular case, the class in question implements several interfaces, but that feels like it doesn't make any (or at least no significant) difference here. I can't decide if this is an acceptable pattern or not. Is it or is it not, and why?

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• how to make a continuous machine gun sound-effect

  - by Jan

  I am trying to make an entity fire one or more machine-guns. For each gun I store the time between shots (1.0 / firing rate) and the time since the last shot. Also I've loaded ~10 different gun-shot sound-effects. Now, for each gun I do the following: function update(deltatime): timeSinceLastShot += deltatime if timeSinceLastShot >= timeBetweenShots + verySmallRandomValue(): timeSinceLastShot -= timeBetweenShots if gunIsFiring: displayMuzzleFlash() spawnBullet() selectRandomSound().play() But now I often get a crackling noise (which I assume is when two or more guns are firing at the same time and confuse the sound-device). My question is whether A) This a common problem and there is a well-known solution, maybe to do with the channels or something, or B) I am using a completely wrong approach to the task. I had a look at some sound-assets for other games and they used complete burst with multiple shots. I suppose I could try that, but I would like to have organic little hickups in the gun-fire (that's what the random value is for) to make the game more gritty and dirty. I am using Panda3D, but I had the exact same problem in PyGame and SDL. [edit] Thanks a lot for the answers so far! One more problem with faking it though: Now how do I stop the sound? Let's say I have an effect with 5 bangs... *bang* *bang* *bang* *bang* *bang* And I magically manage to loop it so that there's no gap or overlap if the player fires more than 5 shots. Now, what do I do if the player stops firing halfway through the third bang? How do I know how long to keep playing the sample so that the third bang is completed and I can start playing the rumbling echo of the last shot? Of course I can look up the shot/pause timing of that sound-sample and code accordingly, but it feels extremely hacky.

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• Reinventing the Wheel, why should I?

  - by Mercfh

  So I have this problem, it may be my OCD (i have OCD it's not severe.....but It makes me very..lets say specific about certain things, programming being one of them) or it may be the fact that I graduated college and still feel "meh" at programming. Reading This made me think "OH thats me!" but thats not really my main problem. My big problem is....anytime im using a high level language/API/etc. I always think to myself that im not really "programming". I know I know...it sounds stupid. But Like I feel like....if i can't figure out how to do it at the lowest level then Im not really "understanding" it. I do this for just about every new technology I learn. I look at the lowest level and try to understand it. Sometimes I do.....most of the time I don't, I mean i've only really been programming for 4 years (at college, if you even call it programming.....our university's program was "meh"). For instance I do a little bit of embedded programming (with the Atmel AVR 8bits/Arduino stuff). And I can't bring myself to use the C compiler, even though it's 8 million times easier than using assembly......it's stupid I know... Anyone else feel like this, I think it's just my OCD that makes me feel this way....but has anyone else ever felt like they need to go down to the lowest level of the language to even be satisfied with using it? I apologize for the very very odd question, but I think it really hinders me in getting deep seeded into a programming language and making a real application of my own. (it's silly I know)

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• How to make an Actor follow my finger

  - by user48352

  I'm back with another question that may be really simple. I've a texture drawn on my spritebatch and I'm making it move up or down (y-axis only) with Libgdx's Input Handler: touchDown and touchUp. @Override public boolean touchDown(int screenX, int screenY, int pointer, int button) { myWhale.touchDownY = screenY; myWhale.isTouched = true; return true; } @Override public boolean touchUp(int screenX, int screenY, int pointer, int button) { myWhale.isTouched = false; return false; } myWhale is an object from Whale Class where I move my texture position: public void update(float delta) { this.delta = delta; if(isTouched){ dragWhale(); } } public void dragWhale() { if(Gdx.input.getY(0) - touchDownY < 0){ if(Gdx.input.getY(0)<position.y+height/2){ position.y = position.y - velocidad*delta; } } else{ if(Gdx.input.getY(0)>position.y+height/2){ position.y = position.y + velocidad*delta; } } } So the object moves to the center of the position where the person is pressing his/her finger and most of the time it works fine but the object seems to take about half a second to move up or down and sometimes when I press my finger it wont move. Maybe there's another simplier way to do this. I'd highly appreciate if someone points me on the right direction.

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• Algorithm to shoot at a target in a 3d game

  - by Sebastian Bugiu

  For those of you remembering Descent Freespace it had a nice feature to help you aim at the enemy when shooting non-homing missiles or lasers: it showed a crosshair in front of the ship you chased telling you where to shoot in order to hit the moving target. I tried using the answer from http://stackoverflow.com/questions/4107403/ai-algorithm-to-shoot-at-a-target-in-a-2d-game?lq=1 but it's for 2D so I tried adapting it. I first decomposed the calculation to solve the intersection point for XoZ plane and saved the x and z coordinates and then solving the intersection point for XoY plane and adding the y coordinate to a final xyz that I then transformed to clipspace and put a texture at those coordinates. But of course it doesn't work as it should or else I wouldn't have posted the question. From what I notice the after finding x in XoZ plane and the in XoY the x is not the same so something must be wrong. float a = ENG_Math.sqr(targetVelocity.x) + ENG_Math.sqr(targetVelocity.y) - ENG_Math.sqr(projectileSpeed); float b = 2.0f * (targetVelocity.x * targetPos.x + targetVelocity.y * targetPos.y); float c = ENG_Math.sqr(targetPos.x) + ENG_Math.sqr(targetPos.y); ENG_Math.solveQuadraticEquation(a, b, c, collisionTime); First time targetVelocity.y is actually targetVelocity.z (the same for targetPos) and the second time it's actually targetVelocity.y. The final position after XoZ is crossPosition.set(minTime * finalEntityVelocity.x + finalTargetPos4D.x, 0.0f, minTime * finalEntityVelocity.z + finalTargetPos4D.z); and after XoY crossPosition.y = minTime * finalEntityVelocity.y + finalTargetPos4D.y; Is my approach of separating into 2 planes and calculating any good? Or for 3D there is a whole different approach? sqr() is square not sqrt - avoiding a confusion.

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• Why google return soft 404 when I redirect on signup page?

  - by Hettomei

  Since one month, I've got an increased "soft 404" reported by google webmaster tools but work well for users. I made some fix but can't figure out how to solve it. Configuration (maybe useless): I have a website built with rails 3.1 Authentication is handled by the gem Devise Problem: On this page http://en.bemyboat.com/yacht-charter/9965-sailboat-beneteau-oceanis-43 when you click on "Ask a Boat request" (a simple form, in GET to : http://en.bemyboat.com/boat_requests/new/9965) you are redirected with the http status 302 to sign in, and then sent back to the new page if successfully sign in. Google tells me that the link on "ask a boat request" returns a soft 404. I can't make this form in "POST" (which will solve the problem) because we need to automatically redirect user to the good page after sign in. (the Gem Devise memorize the "get" link) To simplify, the question is: how to protect a private page with authentication, reached with a simple "get" and not to be penalized by google with "soft 404". Thank you. PS : this website suffer a lot about english translation... please don't care.

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• Is there such a thing as "closure" with software work?

  - by Bobby Tables

  I burned out last year (after a decade of fulltime programming jobs) and am on a sabbatical now. With all the self-examination I've started to figure out some of the root causes of my burnout, and one of the major ones is basically this: there was never any real closure in any of the work I've ever done. It was always a case of getting into an open-ended support/maintenance grind and going stale. When I first entered the industry, I had this image of programming work being very project-based. And I expected projects to have a start, beginning, and END. And then you move on and start on something totally new and fresh. Basically I never expected that a lot (most) of software work involves supporting and maintaining the same code base for open-ended long periods of time - years and even decades. That, combined with generally having itchy feet makes me think that burnout is inevitable for me, after 2-3 years, in ANY fulltime software job. All this sounds like I probably should have been a contractor instead of a fulltimer. But when I discuss this with people, a lot of them say that even THEN you can't really escape having to go back and maintain/support the stuff you worked on, over and over (eg. Coming back on support contracts, for example). The nature of software work is simply like that. There is no project closure, unlike in many other engineering fields. So my question is - Is there ANY programming work out there which is based on short to mid term projects/stints and then moving on cleanly? And is there any particular industry domain or specialization where this kind of project work is typical?

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• Recovering from an incorrectly deployed robots.txt?

  - by Doug T.

  We accidentally deployed a robots.txt from our development site that disallowed all crawling. This has caused traffic to dip dramatically, and google results to report: A description for this result is not available because of this site's robots.txt – learn more. We've since corrected the robots.txt about a 1.5 weeks ago, and you can see our robots.txt here. However, search results still report the same robots.txt message. The same appears to be true for Bing. We've taken the following action: Submitted site to be recrawled through google webmaster tools Submitted a site map to google (basically doing everything possible to say "Hey we're here! and we're crawlable!") Indeed a lot of crawl activity seems to be happening lately, but still no description is crawled. I noticed this question where the problem was specific to a 303 redirect back to a disallowed path. We are 301 redirecting to /blog, but crawling is allowed here. This redirect is due to a site redesign, wordpress paths for posts such as /2012/02/12/yadda yadda have been moved to /blog/2012/02/12. We 301 redirect to wordpress for /blog to keep our google juice. However, the sitemap we submitted might have /blog URLs. I'm not sure how much this matters. We clearly want to preserve google juice for URLs linked to us from before our redesign with the /2012/02/... URLs. So perhaps this has prevented some content from getting recrawled? How can we get all of our content, with links pointed to our site from pre-and-post redesign reporting descriptions? How can we resolve this problem and get our search traffic back to where it used to be?

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• Higher resolutions unavailable with 2.6.38-8 kernel

  - by time-wastrel

  After upgrading to Natty and the 2.6.38-8 kernel I could no longer obtain the 1920x1080 resolution available in Maverick with 2.6.35-22. In fact the boot occasionally hung. However, after selecting the remaining 2.6.35-22 kernel, the high resolution was available. I then made the mistake of completely reinstalling, but could never get the higher resolutions with 2.6.38-8, no matter what I did. e.g. trying the nvidia proprietary driver, creating an xorg.conf. Even from the command line using xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync xrandr --addmode DVI-I-1 1920x1080_60.00 xrandr --output DVI-I-1 --mode 1920x1080_60.00 all I would get would be a blank screen and the monitor reporting no input. (Low resolutions displayed fine with xrandr.) I could actually add the 1920x1080 to the already existing probe-reported resolutions in the pool of available resolutions, but choosing it would give the blank screen. In the end I installed the 2.6.35-22 kernel again. The high resolution is back. For a while there, staying up all night and trying many things, I thought that a new video board or monitor might be needed, but deep down, I knew that they were both OK. My question is - "Is this some bug involving the latest kernel, that will go away, or if this persists in future kernels, is there a way to make sure that I can keep my native resolution?"

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• Can non-IT people handle a wiki?

  - by Andrew Heath

  (I'm hoping that some of you will have encountered this issue before and can offer some insights...) My company is looking to improve their market research data management. Current data management style: "Hey Jimbo, where's that picture of our WhatZit 2.0? "yeah I remember that email about that company from that guy, gimme a few minutes to search my Outlook" "who has the newest copy of the Important Competitor's product catalogue? Mine is from '09." ... "Colleen does, and she's on maternity leave. You'll have to call her to get her workstation password..." Desired data management style: data organized neatly by topic (legal, economic, industrial, competitor) for each topic, multiple media types stored together (company product images, press releases, contact info) but still neatly sorted by type data editing histories communal access (no data silos) I was thinking about setting up a department wiki for all users to access. It seems to satisfy the four criteria above, but I'm a little concerned about how user-friendly (read: decipherable to non-technical people) it is for the more advanced features like image galleries, article formatting, and the like. Has anyone here setup a wiki for non-IT people and had it not catch on fire//become a ghost town//look like Geocities? Bonus question: can you see any obvious drawbacks to my choice of MediaWiki (or any other wiki) for solving this problem? Thank you.

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• Class Design - Space Simulator

  - by Peteyslatts

  I have pretty much taught myself everything I know about programming, so while I know how to teach myself (books, internet and reading API's), I'm finding that there hasn't been a whole lot in the way of good programming. So I have two questions: First the broad one: Does anyone have suggestions as to sources for learning about good programming habits and techniques? I'd prefer it if the resource wasn't a 5000 page tome. The more I can read it in installments the better. More specifically: I am finishing up learning the basics of XNA and I want to create a space simulator to test my knowledge. This isn't a full scale simulator, but just something that covers everything I learned. It's also going to be modular so I can build on it, after I get the basics down. One of the early features I want to implement is AI. And I want to take this into account as I'm designing my classes so I can minimize rewriting code. So my question: How should I design ship classes so that both the player and AI can use them? The only idea I have so far is: Create a ship class that contains stats, models, textures, collision data etc. The player and AI would then have the data for position, rotation, health, etc and would base their status off of the ship stats.

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