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• How well do graduates from top universities perform and how does it feel compare to the rest of the world?

  - by Amumu

  I always have impressions to those who got admitted into top Universities like MIT, Standford... for studying Engineering. I don't actually know what they are doing in the University or what they will do, but I always feel they can perform higher level tasks with more complexities. I always think that they are good at create and applying mathematical model in real life and I tend to agree: If you can't apply math, it's your problems, not math. I am a junior software engineer on embedded devices. I am learning more on Linux kernel and low level stuffs. Even so, my will is not strong enough to pursue technical path forever, with a final purpose is to create something significant on my own. May I have a chance to get on their level if I keep learning through experience and self-study? In my opinion, Math is the must have requirement, since it seems that programs on those Universities are very Math oriented. Without very strong math skill, how can one perform good in science and researching beyond making regular business products?

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• Algorithm for grouping friends at the cinema [closed]

  - by Tim Skauge

  I got a brain teaser for you - it's not as simple as it sounds so please read and try to solve the issue. Before you ask if it's homework - it's not! I just wish to see if there's an elegant way of solving this. Here's the issue: X-number of friends want's to go to the cinema and wish to be seated in the best available groups. Best case is that everyone sits together and worst case is that everyone sits alone. Fewer groups are preferred over more groups. Sitting alone is least preferred. Input is the number of people going to the cinema and output should be an array of integer arrays that contains: Ordered combinations (most preferred are first) Number of people in each group Below are some examples of number of people going to the cinema and a list of preferred combinations these people can be seated: 1 person: 1 2 persons: 2, 1+1 3 persons: 3, 2+1, 1+1+1 4 persons: 4, 2+2, 3+1, 2+1+1, 1+1+1+1 5 persons: 5, 3+2, 4+1, 2+2+1, 3+1+1, 2+1+1+1, 1+1+1+1+1 6 persons: 6, 3+3, 4+2, 2+2+2, 5+1, 3+2+1, 2+2+1+1, 2+1+1+1+1, 1+1+1+1+1+1 Example with more than 7 persons explodes in combinations but I think you get the point by now. Question is: What does an algorithm look like that solves this problem? My language by choice is C# so if you could give an answer in C# it would be fantastic!

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• Ubuntu 12.04 menu bar, nautilus, terminal, and gtk themes not working after installation of Gimp 2.8

  - by Chris

  I installed gimp2.8 from this ppa: ppa:otto-kesselgulasch/gimp after that, my system began having problems. This is my thought process in trying to fix what's happened and the order in which it happened: I noticed the menu bar at the top changed from an opaque black to perfectly clear and the titles of applications and the hidden buttons reacted slowly. No big deal, restarted to see if it fixed it. It didn't, in fact, when the logon screen came up, the password field was grey and boxy like a default windows 98 theme (that's the best I can describe it) as were all the option buttons for gtk programs. I open terminal to try and reinstall gtk, but the terminal is just a black screen with no ability to input commands. I go to a tty and I reinstalled gtk3 and gtk2 (I have both on my system. I don't think they're in conflict, they hadn't been before hand). I restarted. Nothing doing. Log in, nautilus isn't placing icons on my desktop. I click the launcher. It flashes, but no window opens. Try to open by Alt+f2, nothing. I purge ubuntu-desktop, restart, reinstall ubuntu-desktop. Nothing. I have no clue what to do at this point so I'm asking for any help diagnosing the problem and fixing it.

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• How Do Computers Work? [closed]

  - by Rob P.

  This is almost embarrassing ask...I have a degree in Computer Science (and a second one in progress). I've worked as a full-time .NET Developer for nearly five years. I generally seem competent at what I do. But I Don't Know How Computers Work! Please, bare with me for a second. A quick Google of 'How a Computer Works' will yield lots and lots of results, but I struggled to find one that really answered what I'm looking for. I realize this is a huge, huge question, so really, if you can just give me some keywords or some direction. I know there are components....the power supply, the motherboard, ram, CPU, etc...and I get the 'general idea' of what they do. But I really don't understand how you go from a line of code like Console.Readline() in .NET (or Java or C++) and have it actually do stuff. Sure, I'm vaguely aware of MSIL (in the case of .NET), and that some magic happens with the JIT compiler and it turns into native code (I think). I'm told Java is similar, and C++ cuts out the middle step. I've done some mainframe assembly, it was a few years back now. I remember there were some instructions and some CPU registers, and I wrote code....and then some magic happened....and my program would work (or crash). From what I understand, an 'Emulator' would simulate what happens when you call an instruction and it would update the CPU registers; but what makes those instructions work the way they do? Does this turn into an Electronics question and not a 'Computer' question? I'm guessing there isn't any practical reason for me to understand this, but I feel like I should be able to. (Yes, this is what happens when you spend a day with a small child. It takes them about 10 minutes and five iterations of asking 'Why?' for you to realize how much you don't know)

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• Having extreme issues getting Compiz working on Ubuntu 11.10 (32-bit)

  - by Josh Hornell

  I have been working very hard the past few days to try to get Compiz configured and working correctly but I have been running into a lot of issues. I first installed the CompizConfig Settings Manager and tried different features such as the desktop cube and couldn't get any of them to work. Then I read that I may not have the right graphics card drivers installed (Nvidia GT540m). So I went into the Additional Drivers tool and it shows that 'no proprietary drivers are in use on this system', which struck me as a bit odd as when I very first installed Ubuntu it showed that my Nvidia drivers were installed an active until I downloaded and installed the updates to Ubuntu and since then it's shown empty. I then tried to install my graphics card drivers manually via this article How do I install the latest Nvidia drivers via the Additional Drivers tool?. I rebooted and had no issue although I tried to go back into the CompizConfig Settings Manager and couldn't get anything to work as well as my Additional Drivers tool still showed no drivers installed. I feel like I've tried about everything I can think of and any help would be much appreciated!

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• Can observer pattern be represented by cars and traffic lights?

  - by eeerahul

  I wanted to verify with all of you, if I have a correct Observer Pattern analogy. The scenario is as follows: Consider, at a junction, there is a traffic signal, having red, yellow and green lights respectively. There are vehicles facing the traffic signal post. When it shows red, the vehicles stop, when it shows green, the vehicles move on. In case, it is yellow, the driver must decide whether to go or to stop, depending on whether he/she has crossed the stop line or not. At the same time, there are vehicles that do not care about the signal. They would do as they like. The similarities are that, the Traffic Signal happens to be the subject, notifying its states by glowing the appropriate lights. Those looking at it and following the signal are the ones subscribed to it, and behave according to the state of the subject. Those who do not care about it, are sort-of un-subscribed from the traffic signal. Please tell me, if you think this is a correct analogy or not?

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• How to verify the code that could take a substantial time to compile? [on hold]

  - by user18404

  As a follow up to my prev question: What is the best aproach for coding in a slow compilation environment To recap: I am stuck with a large software system with which a TDD ideology of "test often" does not work. And to make it even worse the features like pre-compiled headers/multi-threaded compilation/incremental linking, etc is not available to me - hence I think that the best way out would be to add the extensive logging into the system and to start "coding in large chunks", which I understand as code for a two-three hours first (as opposed to 15-20 mins in TDD) - thoroughly eyeball the code for a 15 minutes and only after all that do the compilation and run the tests. As I have been doing TDD for a quite a while, my code eyeballing / code verification skills got rusty (you don't really need this that much if you can quickly verify what you've done in 5 seconds by running a test or two) - so I am after a recommendations on how to learn these source code verification/error spotting skills again. I know I was able to do that easily some 5-10 years ago when I din't have much support from the compiler/unit testing tools I had until recently, thus there should be a way to get back to the basics.

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• What should a programmer's yearly routine be to maximize their technical skills?

  - by sguptaet

  2 years ago I made a big career change into programming. I learned various technologies on my own without any prior experience. I really love it and feel lucky with all the resources around us to help us learn. Books, courses, open-source, etc. There are so many avenues. I'm wondering what a good routine would be to follow to maximize my software development skills. I don't believe just building software is the way, because that leaves no time for learning new concepts or technologies. I'm looking for an answer like this: Take a new concept sabbatical/workshop 2 weeks per year. Read 1 theoretical and 1 practical programming book per year. Learn 1 additional language every 2 years. Take a 1 week vacation every 6 months. Etc. I realize that the above might sound naive and unrealistic as there are so many factors. But I'd like to know the "recipe" that you think is best that will serve as a guide for people.

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• Never Bet Against the Impossible

  - by BuckWoody

  My uncle used to say “If a man tells you that his car squirts milk in his eye when you lift the hood, don’t bet against that. You’ll end up with milk in your eye.” My friend Allen White tells me this is taken from a play (and was said about playing cards), but I think the sentiment holds, even in database work. I mentioned the other day that you should allow the other person to talk and actively listen before you propose a solution. Well, I saw a consultant “bet against the impossible”  the other day – and it bit her. She explained to the person telling her the problem that the situation simply couldn’t exist that way, and he proceeded to show her that it did. She got silent, typed a few things, muttered a little, and then said “well, must be something else.” She just couldn’t admit she was wrong. So don’t go there. If someone explains a problem to you with their database, listen with purpose, and then explore the troubleshooting steps you know to find the problem. But keep your absolutes to yourself. In fact, I have a friend that has recently sent me one of those. He connects to a system with SQL Server Management Studio (SSMS) version 2008 (if I recall correctly) and it shows a certain version number of the target system in the connection tab. Then he connects to it using SSMS 2008 R2 and gets a different number. Now, as far as I know, we didn’t change the connection string information, and that’s provided by the target system, so this is impossible. But I won’t tell him that. Not until I look a little more. :) Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Amazon EC2 vs Dedicated server at Hetzner, what's the use for EC2?

  - by C-Blu

  After searching the web I still can't find the reason to use EC2. What's the point to scale EC2? If you expect a huge burst in traffic, they say. OK, but what if you already have a couple of sites with good traffic, and for example medium reserved EC2 instance is not enough. You are paying $36.60(medium reserved for 1year) in EU(Ireland) + traffic + optional expenses for databases and S3 if you use them. Of course as some point when you are under $56.6-$66.1 you can optimize your hosting costs with Amazon EC2. But when you get at some point if purchase EX4 server from Hetzner, it will surpass your perfomance needs for a long time, before you get a massive traffic. (I am wrong?) CPU: i7-2600 Quadcore (3.4-3.8 Ghz) RAM: 16 GB HDD: 2x3 TB SATA (6 Gbit/s) - I think that disc performance of a dedicated is better then of Amazon EBS Traffic: 10 TiB in month included. This is what you get from Hetzner for $56(- 19% VAT) or $66 for EU residents. Please, tell me what's the reason to use Amazon? Which load won't a server from Hetzner take, but Amazon Auto Scaling will? The maintenance of dedicated vs EC2 is still the same? Or hardware failure at Amazon, won't ruin your EBS storage? I'm still not at the level when I need expensive hosting, but want to know beforehand, just to be sure if Amazon infrastructure is better then pure performance of Hetzner's hardware.

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• Software architecture map to aid cross team communication?

  - by locster

  I work in a company where multiple teams each work on different parts of a software product in a vaguely agile/scrum manner. Mostly the organisation works well but there have been instances where a team may make a change without realising its impact on other teams. Where dependence is known communication has been good, and where dependence is suspected then 'broadcast' emails and informal conversations have also worked well. But there exists a sub-set of tasks that fall between the cracks. Broadcast emails are likely not the solution as they would become too numerous such that the email signal/noise ratio would fall. I'm contemplating a solution that involves a sort of map of the software, which details all of the various parts of the system and loosely tries to place interacting and dependent parts near to each other. Each developer then updates their position on the map (today I'm working on X and Y), and therefore if two or more developers happen to be co-located (or proximate) on the map then we can see this each day and this could form the trigger for further discussion on possible overlap and conflict. Is such a method out there and in use? If so what is it and does it work? Otherwise, do you think such a scheme has merit?

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• How can I check myself when I'm the only one working on a project?

  - by Ricardo Altamirano

  I'm in between jobs in my field (unrelated to software development), and I recently picked up a temporary side contract writing a few applications for a firm. I'm the only person working on these specific applications. Are there ways I should be checking myself to make sure my applications are sound? I test my code, try to think of edge cases, generate sample data, use source control, etc. but since I'm the only person working on these applications, I'm worried I'll miss bugs that would easily be found in a team environment. Once I finish the application, either when I'm happy with it or when my deadline expires, the firm plans to use it in production. Any advice? Not to use a cliche, but as of now, I simply work "to the best of my ability" and hope that it's enough. Incidentally, I'm under both strict NDA's and laws about classified material, so I don't discuss the applications with friends who have actually worked in software development. (In case it's not obvious, I am not a software developer by trade, and even my experience with other aspects of information technology/computer science are limited and restrained to dabbling for the most part).

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• Where can I learn about managing domain names for my websites? [closed]

  - by Shahbaz

  [I originally asked this question on serverfault.com, where it was closed as 'out of scope.' Hopefully it is appropriate for this forum] I am a developer who doesn't understand how to effectively manage Internet domain names. Say I registered a name with namecheap and host a website on linode. Now what is an a-record? What is a name server and do I host it with namecheap of linode? Why would I pay amazon when others are free? Does any of this matter in terms of website latency or reliability? I feel like a script kiddy, copying and pasting others' and hoping it works. Is there a book or other resource that explains all this? I know amazon is full of books about DNS, but afaik they are about setting up DNA servers for local networks, not the Internet. p.s. To emphasize, I'm asking for books or long write-ups which explain this to technically competent people, who just haven't had to think about the role of commercial registrars, name servers, commercial hosts, commercial websites and how all parts play together on the real internet (not local networks).

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• Interface (contract), Generics (universality), and extension methods (ease of use). Is it a right design?

  - by Saeed Neamati

  I'm trying to design a simple conversion framework based on these requirements: All developers should follow a predefined set of rules to convert from the source entity to the target entity Some overall policies should be able to be applied in a central place, without interference with developers' code Both the creation of converters and usage of converter classes should be easy To solve these problems in C# language, A thought came to my mind. I'm writing it here, though it doesn't compile at all. But let's assume that C# compiles this code: I'll create a generic interface called IConverter public interface IConverter<TSource, TTarget> where TSource : class, new() where TTarget : class, new() { TTarget Convert(TSource source); List<TTarget> Convert(List<TSource> sourceItems); } Developers would implement this interface to create converters. For example: public class PhoneToCommunicationChannelConverter : IConverter<Phone, CommunicationChannle> { public CommunicationChannel Convert(Phone phone) { // conversion logic } public List<CommunicationChannel> Convert(List<Phone> phones) { // conversion logic } } And to make the usage of this conversion class easier, imagine that we add static and this keywords to methods to turn them into Extension Methods, and use them this way: List<Phone> phones = GetPhones(); List<CommunicationChannel> channels = phones.Convert(); However, this doesn't even compile. With those requirements, I can think of some other designs, but they each lack an aspect. Either the implementation would become more difficult or chaotic and out of control, or the usage would become truly hard. Is this design right at all? What alternatives I might have to achieve those requirements?

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• Why is my HDD going back from standy?

  - by Pablo

  My hard drives, connected to Ubuntu server are producing the following log every exactly 5 minutes. Nov 1 14:10:50 localhost kernel: [ 1602.884936] ata2.00: hard resetting link Nov 1 14:10:51 localhost kernel: [ 1603.226804] ata2.01: hard resetting link Nov 1 14:10:52 localhost kernel: [ 1604.274533] ata2.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 1 14:10:52 localhost kernel: [ 1604.274548] ata2.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 1 14:10:52 localhost kernel: [ 1604.356669] ata2.00: configured for UDMA/133 Nov 1 14:10:52 localhost kernel: [ 1604.375247] ata2.01: configured for UDMA/133 Nov 1 14:10:52 localhost kernel: [ 1604.375265] ata2: EH complete I don't think this is related to hard drive failure, because it happens for ALL hard drives connected and ONLY when I write spindown_time = 12 in /etc/hdparm.conf. The reason I add this value is to put disks into standby mode after 60 seconds, which is happening after that period (checked with hdparm -C). The first clue I thought that smartd was running and spinning the drive. However, I couldn't find it in ps -aux | grep smart. Additionally, iostat does show that nobody accessed those drives, since Blk_read, Blk_wrtn remain unchanged. I also killed all processes that may be doing something with hdd(eg SAMBA). So I guess the problem is solely with hdparm... I have no more clue where that 5 minute value hides.

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• How to choose between using a Domain Event, or letting the application layer orchestrate everything

  - by Mr Happy

  I'm setting my first steps into domain driven design, bought the blue book and all, and I find myself seeing three ways to implement a certain solution. For the record: I'm not using CQRS or Event Sourcing. Let's say a user request comes into the application service layer. The business logic for that request is (for whatever reason) separated into a method on an entity, and a method on a domain service. How should I go about calling those methods? The options I have gathered so far are: Let the application service call both methods Use method injection/double dispatch to inject the domain service into the entity, letting the entity do it's thing and then let it call the method of the domain service (or the other way around, letting the domain service call the method on the entity) Raise a domain event in the entity method, a handler of which calls the domain service. (The kind of domain events I'm talking about are: http://www.udidahan.com/2009/06/14/domain-events-salvation/) I think these are all viable, but I'm unable to choose between them. I've been thinking about this a long time and I've come to a point where I no longer see the semantic differences between the three. Do you know of some guidelines when to use what?

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• Quitting a small start-up where you are a primary developer?

  - by programmx10

  Just curious to hear from other people who may have been in similar situations. I work for a small startup (very small) where I am the main developer for a major part of the app they are building, the other dev they have does a different area of work than I do so couldn't take over my part. I've been with the company 5 months, or so, but I am looking at going to a more stable company soon because its just getting to be too much stress, overtime, pressure, etc for too little benefit and I miss working with other developers who can help out on a project. The guy is happy with my work and I think I've helped them get pretty far but I've realized I just don't like being this much "on the edge" as its hard to tell what the direction of the company is going to be since its so new. Also, even though I'm the main dev for the project, I would still only consider myself a mid-level dev and am selling myself as such for the new job search. Just to add more detail, I'm not a partner or anything in the company and this was never discussed, so I just work on a W2 (with no benefits of course). I work at home so that makes it easier to leave, I guess, but I don't want to just screw the guy over but also don't want to be tied in for too long. Obviously I would plan to give 2 weeks notice at least, but should I give more? How should I bring up the subject because I know its going to be a touchy thing to bring up. Any advice is appreciated UPDATE: Thanks everyone for posting on this, I have now just completed the process of accepting an offer with a larger company and quitting the startup. I have given 2 weeks notice and have offered to make myself available after that if needed, basically its a really small company at this point so it would only be 1 dev that I would have to deal with... anyways, it looks like it may work out well as far as me maintaining a good relationship with the founder for future work together, I made it out to be more of a personal / lifestyle issue than about their flaws / shortcomings which definitely seems to help in leaving on a good note

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• Can we use Google Earth images by applying our Unity3D mesh ?

  - by Jake M

  We are developing a commercial app for iOS and Android. The app will display development plans(architectural drawings) in a real world 3D environment. The app will work by creating a Unity3D mesh, applies a google earth image as the texture then draws out 3d lines(architectural drawings) over the Unity Mesh. Question: We are unsure if this is allowed under Google's terms and agreements? See quoted text below. In the bold text below its a little vague whether what we are doing(explained above) is violating their terms and agreements. What do you think? Does anyone know how we contact google to ask them? You may not mass download or use bulk feeds of any Content, including but not limited to extracting numerical latitude or longitude coordinates, geocoding, text-based directions, imagery, visible map data, or Places data (including business listings) for use in other applications. You also may not trace Google Maps or Earth as the basis for tracing your own maps or geographic materials. For full details, please read section 10.3.1 of the Maps/Earth API Terms of Service. Does anyone have any advice/experience dealing with this stuff?

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• make gnome3 to work as I expect! [closed]

  - by gnome

  Possible Duplicate: How to revert to GNOME Classic? I don't like unity so I tried Ubuntu Gnome Remix 12.10. But I feel disappointed too. - No right click on desktop. (I know there is a way to enable it). - No icon on desktop. - I want to have "applications", "palces", "systems" on top panel as before. It just takes much more steps to arrive where I want to go in default gnome 3 settings. - It seems to me that for some applications, when it is maximalized, there is no close buttons or "restore to previous size" button. In fact, it has no title bar in this case, so I can't drag the title bar to restore its previous size and move the window. So I got 3 questions here: (for those who like the way gnome work before) What difference between gnome2 and gnome3 that you prefer the way it works in gnome2? How do you change it to work in the gnome2 way? I don't like the appearance in gnome3. For those who have tried to make your gnome3 looks good, could you share how you customize your gnome3 appearance? (this is for chatting only, not a real question) Why all the main OS (Windows, Mac, Some Linux) want to integrate Desktop and Tablet with focus on Tablet? (Which means that when it is installed on a desktop, it still has tablet appearance, which makes things strange.) Do they think the personal desktop PC will become less and less?

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• Laptop power button not working

  - by DyP

  I have a (seemingly rather exotic) Dell Latitude XT2 notebook running Lubuntu 12.04, fresh install. Tried to get the power button to work as expected (opening lubuntu-logout, just as I think it was meant to be out-of-the box), but no success: power button does nothing but forced power-off on long press. Here some more information, please ask if something more could help: Power button is recognized as a device: xinput lists Power Button as a slave keyboard at /dev/input/event1, and I can run a tool to listen to that device and invoke some action (successfully). But using .config/openbox/lubuntu-rc.xml to assign some action to XF86ShutDown or XF86PowerOff does nothing. Works well for any key of the keyboard. xinput --test reports a keycode (key press, key release) of 124 when pressing & releasing the power button. xmodmap -pk lists 124 mapped to XF86PowerOff which seems correct to me (btw: is this the same as XF86ShutDown?) When assigning another keysymname to the 124 keycode, e.g. 'w', still nothing happens when pressing the power button (no window seems to receive a 'w'). Works well for any key on the keyboard. The outputs of xev for a press/release of the power button irritate me: MappingNotify event, serial 41, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 8, count 248 FocusOut event, serial 41, synthetic NO, window 0x2a00001, mode NotifyGrab, detail NotifyAncestor FocusIn event, serial 41, synthetic NO, window 0x2a00001, mode NotifyUngrab, detail NotifyAncestor KeymapNotify event, serial 41, synthetic NO, window 0x0, keys: 93 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (instead of 93, I also get different values) I might have missed something very basic since I'm not very familiar with both openbox/lubuntu and the X input system. Btw.: same goes for three other special buttons on my laptop..

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• Getting Center and Radius of Irregural Object

  - by Moaz ELdeen

  I have drawn an asteroid object manually , and would like to get its center/radius by a specific equation. I think I can get them by calculated and hard-coded values. The code to draw the asteroid: void Asteroid::Draw() { float ratio = app::getWindowWidth()/app::getWindowHeight(); gl::pushMatrices(); gl::translate(m_Pos*ratio); gl::scale(3.5*ratio,3.5*ratio,3.5*ratio); gl::color(ci::Color(1,1,1)); gl::drawLine(Vec2f(-15,0),Vec2f(-10,-5)); gl::drawLine(Vec2f(-10,-5),Vec2f(-5,-5)); gl::drawLine(Vec2f(-5,-5),Vec2f(-5,-8)); gl::drawLine(Vec2f(-5,-8),Vec2f(5,-8)); gl::drawLine(Vec2f(5,-8),Vec2f(5,-5)); gl::drawLine(Vec2f(5,-5),Vec2f(10,-5)); gl::drawLine(Vec2f(10,-5),Vec2f(15,0)); gl::drawLine(Vec2f(15,0),Vec2f(10,5)); gl::drawLine(Vec2f(10,5),Vec2f(-10,5)); gl::drawLine(Vec2f(-10,5),Vec2f(-10,5)); gl::drawLine(Vec2f(-15,0),Vec2f(-10,5)); gl::popMatrices(); } According to the answer I have written that code to calculate the radius, is it correct or not ? cinder::Vec2f Asteroid::getCenter() { return ci::Vec2f(m_Pos.x, m_Pos.y); } double Asteroid::getRadius() { ci::Vec2f _vec = (getCenter()- Vec2f(15,5)); return _vec.length()*0.3f; }

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• Software solution from the 2000's, should I attempt to patch or remake the whole thing?

  - by ShadowScripter

  I was sent out to discuss a system that a certain company is currently using and what should be done with it. The company manufactures various carton displays. This system was developed to keep track of clients, orders and prices. Lots have happened since the system was created and the system is now, as the manager described it, "locked up" and "problematic", which I translate as "not dynamic" and "unstable". Some info about the system It was developed around the year 2000 Fairly small system, 2-5 users, 6 forms, ~8 tables with average quantities of data Built on early Visual Basic, forms created with the drag and drop design. Interface is basically just a window with a menu and some forms Uses MSSQL database (SQL2005 server) to store data and ODBC driver to query, data was migrated from excel before this system, and before excel it was handled, calculated and written by hand and paper Users work in Microsoft XP environment (and up) Their main problem is that they can't adjust and calculate prices, can't add new carton types etc, correctly anymore because they can't (or rather, they don't know how to) touch the data on the server. I suggested 3 possible solutions Attempt to patch the current system Create a fresh new interface (preferably similar environment, VB.net or VB based) Bring it back to an Excel solution, considering it is such a small system There might be more options, but these are the ones I could think of. My questions are What should I recommend and why? What is or could be the pros and cons of these alternatives? Are there other (possibly better) alternatives?

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• Web Service Standard Complexity

  Are we over-standardizing web services and hindering their adoption? No, and in fact I feel that it is helping its adoption in the modern corporate world. Standards, although they can be daunting and tedious, provide a universal framework to which we all can operate in and around. These frameworks provide a common interface for all of to use when interaction with various computing environments so that data can be transfer freely.  Standards are protocols in which computers communicate with one another. If we take this to the living world, the united nations hires interprets for all each countries dignitaries so that they can understand what other countries are talking about. Imagine if the president of the United States wanted to talk to the ruler of China. How would these to communicate? The interpreter would translate data back and forth acting as in intermediary using both standard American English and Chinese. Without knowing the standards in either language no one would be able to communicate. Even though we work within the framework of standards does not mean that we are stuck with these standards. As technology evolves all standards will be out of touch, and when this occurs standards need to be refactored or replaced with new standards that are current with the technology at that time. How else are we as developers and the technology going to grow? What do you guys think?

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• How to calculate new velocities between resting objects (AABB) after accelerations?

  - by Tiedye

  lately I have been trying to create a 2D platformer engine in C++ with Direct2D. The problem I am currently having is getting objects that are resting against each other to interact correctly after accelerations like gravity have been applied to them. Right now I can detect collisions and respond to them correctly (I think) and when objects collide they remember what other objects they're resting against so objects can be pushed by other objects (note that there is no bounce in any collisions so when objects collide they are guaranteed to become resting until something else happens). Every time the simulation advances, the acceleration for objects is applied to their velocities (for example vx += ax * t, where t is time elapsed since last advancement). After these accelerations are applied, I want to check if any objects that are resting against each other are moving at different speeds than their counterparts (as different objects can have different accelerations) and depending on that difference either unlink the two objects so they are no longer resting, or even out their velocities so they are moving at the same speed once again. I am having trouble creating an algorithm that can do this across many resting objects. Here's a diagram to help explain my problem

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• I can't see how a mature agile team requires any *management*?

  - by ashy_32bit

  After a recent heated debate over Scrum, I realized my problem is that I think of management as a quite unnecessary and redundant activity in a fully agile team. I believe a mature Agile team does not require management or any non-technical decision making process of whatsoever. To my (apparently erring) eyes it is more than obvious that the only one suitable and capable of managing a mature development team is their coach (and that being the most technically competent colleague with proper communication skills). I can't imagine how a Scrum master can contribute to such a team. I am having a great difficulty realizing and understanding the value of such things as Scrum and manager as someone who is not a veteran developer but is well skilled in planning the production cycles when a coach exists in the team. What does that even mean? How on earth someone with no edge-skills of development can manage a highly technical team? Perhaps management here means something else? I see management as a total waste of time and a by-product of immaturity. In my understanding a mature team is fully self-managing. Apparently I'm mistaken since many great people say the contrary but I can't convince myself.

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