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• Should I go with Java or Python for my next project, after using PHP for 5 years? [closed]

  - by vim

  I have a full-time PHP job and I've been working with PHP for 5 years. I'm not willing to stay within this technology stack any more. I also worked with Java for 2 year before, so for me it looks more obvious to switch back to Java. However during last 5 years I was thinking about starting my own project, and now I think I have a very good SAAS idea. I'm completely confused what technology should I use for my project. I don't want to do it in PHP, and after reading many articles about rapid prototype development it seems to me that Django is the best option. I will continue to work full time for my current employer because I need to pay my bills and will work on my project in my free time. The concern I have is should I do my project in Java or Python? To be realistic there is always a risk when you are doing your own project/start-up. If I do it in Java in the worst case scenario I believe I will be able to find a full time Java position because I already have some experience in Java + recent experience in my project. With regards to Python it looks like it is not very popular in my area and salaries are much more lower then for Java. On the other hand I have a feeling that if I chose Java it will take me a way longer to finish my project. Guys I'm completely confused and I need your advice. P.S. I have moved to London 2 years ago from another country, local guys are very welcome to share their thoughts about London's job market.

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• Deepest sense of programming [closed]

  - by xralf

  I suffer on depression for a few months. Programming was one of my big passions (as a hobby). I had a motivation to achieve my goals (projects), to read books and articles about it to have interest in algorithms and data structures, compilers etc. Then, my mind started to think that it has no sense, that the result is useless. I realized, that I loved programming because of an illusion that it has deep sense, that I love playing with code every day as nothing else with feeling that it leads somewhere. Could I rationalize that it has sense to work on some programming project? That there is a deep sense to do it and enjoy this activity? I have no idea what else should I do in the free time, the mornings without motivation are very depressing. It was nice time when I had an illusion that programming is enjoyable. Could you help me to figure out the deepest sense of programming in this world? Why to love it again? What everything could be achieved and realized? (things like higher salary and ego are not what I'm looking for)

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• Input prediction and server re-simultaion

  - by Lope

  I have read plenty of articles about multiplayer principles and I have basic client-server system set up. There is however one thing I am not clear on. When player enters input, it is sent to the server and steps back in time to check if what should have happened at the time of that input and it resimulates the world again. So far everything's clear. All articles took shooting as an example, because it is easy to explain and it is pretty straightforward, but I believe movement is more complicated. Imagine following situation: 2 players move towards each other. A------<------B Player A stops halfway towards the collision point, but there is lag spike so the command does not arrive on the server for a second or so. Current state of the world on the server (and on the other clients as well) at the time when input arrives is this: [1]: -------AB------- The command arrives and we go back in time and re-simulate the world, the result is this: [2]: ---AB----------- Player A sees situation [2] which is correct, but the player is suddenly teleported from the position in [1] (center) to the position in [2]. Is this how this is supposed to work? Point of the client prediction is to give lagged player feeling that everything is smooth, not to ruin experience for other players. Alternative is to discard timestamp on the player's input and handle it when it arrives on the server without going back in time. This, however, creates even more severe problems for lagged player (even if he is lagging just a bit)

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• Rendering 8 bit graphics

  - by Matjaz Muhic

  I have a strong programming background just not from game development. I only made some pong and snake in high school and I did some OpenGL in college. I want to make my own game engine. Nothing fancy just a simple 2D game engine. But because I'm kinda old school and feeling retro. I want graphics to look like old 8 bit games (megaman, contra, super mario, ...). So how were the old games made back then? I want the simplest approach. Were they also using assets (images) like newer engines now do? How do you achieve this kind of rendering using OpenGL? Keep in mind. Simplest solution. I want to know how it was made back then and how I can replicate that. Doesn't even have to be OpenGL. I can draw on window canvas. I do want to make it from scratch basically.

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• Java or Python? Career/Start-up advice needed [closed]

  - by vim

  I have a full-time PHP job and I've been working with PHP for 5 years. As you can guess after spending 5 years I'm not willing to stay within this technology stack any more. I also worked with Java for 2 year before, so for me it looks more obvious to switch back to Java. However during last 5 years I was thinking about starting my own project, and now I think I have a very good SAAS idea. I'm completely confused what technology should I use for my project. I don't want to do it in PHP, and after reading many articles about rapid prototype development it seems to me that Django/Ruby is the best option. I will continue to work full time for my current employer because I need to pay my bills and will work on my project in my free time. The concern I have is should I do my project in Java or Python? To be realistic there is always a risk when you are doing your own project/start-up. If I do it in Java in the worst case scenario I believe I will be able to find a full time Java position because I already have some experience in Java + recent experience in my project. With regards to Python it looks like it is not very popular in my area and salaries are much more lower then for Java. On the other hand I have a feeling that if I chose Java it will take me a way longer to finish my project. Guys I'm completely confused and I need your advice. P.S. I have moved to London 2 years ago from another country, local guys are very welcome to share their thoughts about London's job market.

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• Is it reasonable to null guard every single dereferenced pointer?

  - by evadeflow

  At a new job, I've been getting flagged in code reviews for code like this: PowerManager::PowerManager(IMsgSender* msgSender) : msgSender_(msgSender) { } void PowerManager::SignalShutdown() { msgSender_->sendMsg("shutdown()"); } I'm told that last method should read: void PowerManager::SignalShutdown() { if (msgSender_) { msgSender_->sendMsg("shutdown()"); } } i.e., I must put a NULL guard around the msgSender_ variable, even though it is a private data member. It's difficult for me to restrain myself from using expletives to describe how I feel about this piece of 'wisdom'. When I ask for an explanation, I get a litany of horror stories about how some junior programmer, some-year, got confused about how a class was supposed to work and accidentally deleted a member he shouldn't have (and set it to NULL afterwards, apparently), and things blew up in the field right after a product release, and we've "learned the hard way, trust us" that it's better to just NULL check everything. To me, this feels like cargo cult programming, plain and simple. A few well-meaning colleagues are earnestly trying to help me 'get it' and see how this will help me write more robust code, but... I can't help feeling like they're the ones who don't get it. Is it reasonable for a coding standard to require that every single pointer dereferenced in a function be checked for NULL first—even private data members? (Note: To give some context, we make a consumer electronics device, not an air traffic control system or some other 'failure-equals-people-die' product.) EDIT: In the above example, the msgSender_ collaborator isn't optional. If it's ever NULL, it indicates a bug. The only reason it is passed into the constructor is so PowerManager can be tested with a mock IMsgSender subclass.

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• Get Data from Windows Form into C# program

  - by Jimmy

  I want my C# program to collect data. Then, when the OK button is clicked, I want this data to be loaded into my program -- such as into variables in Main(), or into data members of a class I have constructed, and I want the form to then go away -- not be hidden, but actually closed. Alas, read as I might in the book I have, the data collected by the form stays in the form, execution proceeds within the form, and the same form is used to display the result of the program's computations. Sheesh. All I want is to capture the form's information, close the form and proceed with my program. I would appreciate some tips on geting data from a form into Main() or into a class's data members. Thanks, Lucky

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• How to Activate wifi in Toshiba Satellite C655?

  - by user4106

  I've recently bought a Toshiba Satellite C655. It came with Windows 7 preinstalled. I've never had a notebook before, but as a desktop user, I was a Ubuntu user since 2 years, and I've never had a problem with drivers, wifi, etc. When I tried to install the Ubuntu 10.04, and also the new and fresh 10.10, in my new laptop, I experienced some troubles with some of the componentes of my computer. For example, I was not able to activate my wi-fi card, although I know the kernel recognizes it correctly, because when doing "lspci" at the terminal, it was listed. Anyhow, I'm not able to "activate" the wifi, or whatever it's necessary to do in order to be able to search for public networks available, and to connect with them. The wifi-card the laptops brings is the (the lspci output): 03:00.0 Network Controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01). It's anything in you can help me? Thanks a lot in advance! Edit Neither solution seems to work. In first place, i've tried installig what hhlp told me. After the installation, nothing seems to change: on right-clicking the wireless icon, it seems to recognize the card, because the option "Enable wifi" was ticked. But, once again, i was not able to "turn the wi-fi" on. In second place, i didn't try installing the drives, because the card is already recongnized. The issue is that i cannot seem to turn it on! One thing i've probably missed is that the Toshiba cames with a windows sofntware that allows you to enable / disable the wifi tools. So, it does not have an external "button" to turn it off. I don't know if that's the problem, but i have the feeling that the issue may be aroud there: in how to turn ON the wifi-signal (or to verify if it's on or off) in my ubuntu.

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• Which topics do I need to research to enable me to complete my self-assigned "Learning Project"?

  - by Anonymous -

  I want to continue learning C#. I've read parts of a few books recommended on here and the language is feeling more familiar by the day. I'd like to tackle a mid-sized personal project to take my expertise to the next level. What I'd like to do, is create an application that 'manages expenses', that runs on multiple machines on a LAN. So for example, say we have person1 and person2 on seperate machines running the application, when person1 enters an expense, it will appear on person2's (pretty UI) view of the expenses database and vice versa. What topics do I need to research to make this possible for me? I plan on learning WPF for the UI (though the steep learning curve (or so I'm told) has me a little anxious about that at this stage. With regards to the database, which database would you recommend I use? I don't want a 'server' for the database to run on, so do I need to use an embedded database that each client machine runs a copy of that updates to each other (upon startup/entering of expense on any machine etc)? What topics under networking should I be looking at? I haven't studied networking before in any language, so do I need to learn about sockets or?

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• Datasets do not regenerate code behind.

  - by Nick

  So I was lucky enough to inherit a project where someone decided to use datasets as a model. The problem is that a column has been added to table in the database. Using the dataset desinger I added the column to the table and tryied to run the 'Custom tool' That tool is doing absolutly nothing from what I can tell. So is there a way to make the generated dataset code actually represent the changes that are made at the designer? Now I know why I have never used a dataset. :)

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• Help in setting the setClientInfo with JPA

  - by enrique

  i am trying to set to jpa the new JDBC method which allows the application to be identified with a name it is the setClientInfo() and i could do it using pure JDBC using the lines Properties jdbcProperties = new Properties(); jdbcProperties.put("user", "system"); jdbcProperties.put("password", "sw01"); jdbcProperties.put("v$session.program", "Clients"); Connection connection = DriverManager.getConnection(url,jdbcProperties); However i have new requirements and i need to make it with JPA EclipseLink i have been googling and could not find something substantial on how to set this property out in JPA i guess it is by annotating something but i do not know what, i was trying to setting the persistence unit by putting the following in the persistence unit: <properties> <property name="toplink.ddl-generation" value="create-tables"/> <property name="v$session.program" value="Clients"/> </properties> but no lucky ...does somebody know how to do it or any idea...? thanks in advanced.-

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• Domain model integration using JSON capable DTOs

  - by g-makulik

  I'm a bit confused about architectural choices for the java/web-applications world. The background is I have a system with certain hardware components (that introduce system immanent active behavior) and a configuration database for system meta and HW-components configuration data (these are even usually self contained, since the HW-components persist configuration data anyway). For realization of the configuration/status data exchange protocol with the HW-components we have chosen the Google Protobuf format, which works well for the directly wired communication with these components. Now we want to develop an abstract model (domain model) for those HW-components and I have the feeling that a plain Java class model would fit best for this (c++ implementation seems to have too much implementation/integration overhead with viable language-bridge interfaces). Google Protobuf message definitions could still serve well to describe DTO objects used to interact with a domain model API. But integrating Google Protobuf messages client side for e.g. data binding in the current view doesn't seem to be a good choice. I'm thinking about some extra serialization features, e.g. for JSON based data exchange with the views/controllers. Most lightweight solutions seem to involve a python based presentation layer using JSON based data transfer (I'm at least not sure to be fully informed about this). Is there some lightweight (applicable for a limited ARM Linux platform) framework available, supporting such architecture to realize a web-application?

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• C++ obtaining milliseconds time on Linux -- clock() doesn't seem to work properly

  - by hasen j

  On Windows, clock() returns the time in milliseconds, but on this Linux box I'm working on, it rounds it to the nearest 1000 so the precision is only to the "second" level and not to the milliseconds level. I found a solution with Qt using the QTime class, instantiating an object and calling start() on it then calling elapsed() to get the number of milliseconds elapsed. I got kind of lucky because I'm working with Qt to begin with, but I'd like a solution that doesn't rely on third party libraries, Is there no standard way to do this? UPDATE Please don't recommend Boost .. If Boost and Qt can do it, surely it's not magic, there must be something standard that they're using!

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• Will Ubuntu Live CD move MFT to resize NTFS volumes?

  - by irwazr

  I have a feeling some will consider this a duplicate, but please hear me out. I've been reading tons of questions and threads around this but have never really found an answer for this specifically. I want to shrink my NTFS partition to make room for a Ubuntu install, so I can dual boot them. However when shrinking the NTFS volume in Windows disk management, it will only go so far as the MFT is sitting near the end of the volume. I've read plenty of posts about why it does this, and how difficult/dangerous it is to move the MFT etc. I've also read that Perfect Disk can apparently do it under it's trial period, but I remain cautious to try this method. I was wondering however if the disk partitioning utility included in the Ubuntu install wizard handles the moving of the MFT when dragging the partition boundaries. It all seems too simple that you simply tell it the new size you want it to be. Would it tell me if it couldn't resize by the amount you requested if the MFT was an issue, or move it for you if it were able. I'm concerned it might corrupt the MFT and the volume, even though I doubt the install wizard would be so daft. So what exactly is the deal with the partition resizing tool in the Ubuntu install wizard? Will it safely resize my NTFS volume despite the location of my MFT? Thanks in advance.

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• How to deal with a coworker who keeps asking instead of searching herself?

  - by mafutrct

  I'm lucky enough to share a room with 3 other people at work. One of them, a senior programmer who's very talkative in general, tends to ask me various questions throughout the day. While some of them are surely ' legitimate', many questions could have been answered by putting in just slightly more search effort on their part. I really don't mind be asked stuff, and I can also cope with beginner questions, but this is seriously interrupting my flow. I clearly remember Joel talking about how private offices increase productivity because they prevent too easy questions from being asked. How should I deal with this situation? Getting a private office is out of the question, sadly. It's difficult to approach him directly, and he blissfully ignored the slight hints I tried to give.

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• Internal Libraries (Subversion Externals, 'library' branch, or just another folder)

  - by Ntsc

  Currently working on multiple projects that need to share internal libraries. The internal libraries are updated continually. Currently only 1 project needs to be stable but soon we will need to have both projects stable at any given time. What is the best way to SVN internal libraries? Currently we are using the 'just another folder' like so... trunk\project1 trunk\project2 trunk\libs It causes a major headache when a shared library is updated for project1 and project2 is now dead until the parts that use the library are updated. So after doing some research on SVN externals I thought of this... trunk\project1\libs (external to trunk\libs @ some revision) trunk\project2\libs (external to trunk\libs @ different revision) trunk\libs\ I'm a little worried about how externals work with commits and not making library commits so complicated that I am the only one capable of doing it (mostly worried about branches with externals as we use them extensively). On top of that we have multiple programming languages within each project some of which don't support per-project library directories (at least not easily) so we would need to check out on a per project basis instead of checking out the trunk. There is also the 'vendor' style branching of libraries but it has the same problem as above where the library would have to be a sub folder of each project and is maybe a little to complicated for how little projects we have. Any insight would be nice. I've spent quite a bit of time reading the Subversion book and feeling like I'm getting no where.

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• Why is order important in moving from tab to tab programmatically (and new in 1.8.10

  - by Bruce

  Hi folks, Up until I updated to jquery-ui-1.8.10 (already using jQuery 1.5), the following code has worked as expected: case 'baseeditor': $('#tab1').html(responseText).fadeIn(500, function() { ... load the contents of the tab and stuff... }); $("#prolearn").tabs("select",1); break; case ... The tab is fueled and then focus is moved from tab0 (from where the ajax call is initiated) to tab1. Now, that code won't work, but this version does: case 'baseeditor': $("#prolearn").tabs("select",1); $('#tab1').html(responseText).fadeIn(500, function() { ... load the contents of the tab and stuff... }); break; case ... Can someone explain the difference - have I just been lucky getting away with my original version? Thanks/Bruce

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• MYSQL - SQL query Getting single record for the similar records and populating other columns with which has more length

  - by Bujji

  Here is my case , I have a database table with below fields name place_code email phone address details estd others and example data if you look at the above example table First three records are talking about XYZ and place code 1020 . I want create a single record for these three records based on substring(name,1,4) place_code ( I am lucky here for all the similar records satisfies this condition and unique in the table .) For the other columns which record column length has max . For example again for the above 3 records email should be [email protected] , phone should be 657890 and details should be "testdetails" This should be done for all the table . (Some has single records and some has max 10 records ) Any help on query that helps me to get the desired result ? Thank You Regards Kiran

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• Can I include a view in Kohana 3 that is not within `application/views`?

  - by alex

  I am building a staff area for a website, which is completely different to the main brochure style site. I have 2 Kohana systems setup. I realise they can both share the same system and modules folder. Now, with the second one, I want to make the main template view a view in a different folder. I tried this in my base controller $this->template = DOCROOT . '../~new2/application/views/template.php'; But Kohana is looking for it in its own views folder as evident by the error I received. I even put a var_dump(file_exists($this->template)); // true to be sure it was finding the correct file. Is there a way to add a template file that is not within the views folder, without hacking the core Kohana code (and if I'm lucky not extending and overloading the view class).

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• How do I tell my parents that landing a job is what actually counts?

  - by shovonr

  On one side, I just want to get a degree with a 3.0 GPA. On the other side, my parents want more than just a 3. Now here's the thing. I program with a passion. I spend day and night programming. And I ace all my programming courses. However, I do terrible on all my elective courses -- such as writing, history, and all that stuff -- which only leaves me with a 3.1 to 3.2 GPA. And my parents want more. They think that university is like high school, where you need super-stellar grades to get to the next level. But they don't realize that good enough grades will land me a job. And they don't realize that a programmer needs to practice to become good at programming, and that having good skills is what will land a job in a nice software development company. Thankfully, though, they don't threaten to beat me with a baseball bat or anything like that. They just occasionally give me the little "tsk-tsk". But even that little "tsk-tsk" makes me feel guilty for opening up an IDE. And on top of that, I procrastinate because of that feeling of guilt. So now, I want to come clean with them. I want to know what's a good way to do that. [Edit] OK, so now, I realized, I should aim for higher grades, as some have suggested below.

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• How complex/straightforward should my programming challenge response in an interview be? [closed]

  - by atraudes

  I've had a couple of interviews for programmer positions in the past couple of weeks, and just about all of them have presented me with programming challenges. Write a program with XX language that can solve XX puzzle or problem, etc. I've had no problem answering the questions. What I'm unsure about is what the depth and breadth my response should be. What would an ideal response look like? How much oomph and time should I spend on elements of the code that aren't crucial to it running (Comments, Javadoc, error handling, etc.)? What if I have 1 hour/6 hours/a whole weekend to spend on it? What are the most important aspects of my response to the interviewer? What's worked for you in the past or what worked on you as an interviewer? I'm definitely one of those folks that can go all out on a project and make it truly shine, but I don't want to give them the impression that I'm going to waste their time and money on stuff they may not want or care about. I have a sneaking feeling there is no "wrong" way to respond to the challenge; each response has a redeeming quality about it, and the goals of the interview are subjective. Regardless, I would love your thoughts and input on this.

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• For photography use, is Unity is overheating my laptop? Should I try OpenSuse instead?

  - by SoT

  I am a perfect noob here in the Linux world. Previously was using Windows 7. Mine is an HP laptop - Intel core2duo T5470 @ 1.60GHz × 2 / 965GM with 2GB RAM. I installed Ubuntu 12.04TLS and is quite liking it's display. I really recognized it is 3D before knowing it was Unity 3D interface. My uses are image editing, home uses, downloads, browsing etc.. No video-editing/gaming at all. Being a Photography enthusiast I use image editing programs fairly more. But I am now feeling my laptop is getting a bit overheated - processor and hard-disk. I tried lm-sensor and could not make out much of it. Installed Xsensors.7. It gives the same output as lm-sensors gave me. It gives temperature for 4 things Temp1, temp2, temp3, and temp4. For "acpitz". Please guide me in this. However I wanted to ask something more. Which one is better for working with images - photography I mean - openSUSE 12.1 or Ubuntu with unity 3D? Can I get the display quality with the openSUSE distribution? I heard for laptops openSUSE uses power more efficiently, is there any truth? Please suggest me whether I should try openSUSE or not. If so with which GUI? KDE or GNOME? Thanks in advance. Regards SoT

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• Should developers do their own software releases (if there is a prod support team in place)?

  - by leora

  I know there are going to always be differences depending on the particular size, staff etc, but i wanted to get feedback in general around: In an environment where you have a production support team doing first line support and release management, is it better to simply have developers manage their own releases instead? In this case, its internal software at an insurance company but the question should be valid at any company, size, etc I think. Currently, we have our production team do releases but there is an argument that its inefficient and that if you allowed developers the ability to do it, they will focus more on making it simple and efficient and avoid basically passing on scripts, etc to run to another team. The counter argument is that if you don't have a check and balance, you could get a software team (or an individual) that doesn't a very hacky job about getting their software out there (making on the fly changes, not documenting the process, etc) and that by forcing the prod support team to do the actual release, it enforces consistency and proper checks and balances. I know this is not a black or white issue but I wanted to see what folks thought on this so the discipline and consistency is there but without the feeling that an inefficient process is in place.

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• knowing all available entity types

  - by plofplof

  I'm making a game where at some point the game will create enemies of random types. Each type of enemy available is defined on its own class derived from an enemy superclass. To do this, obviously the different types of enemies should be known. This is what I have thought of: Just make a list manually. Very simple to do, but I don't like it because I'll be adding more enemy types over time, so any time I add a new class I have to remember to update this (same if I remove an enemy). I would like some kind of auto-updating list. A completely component based system. There are no different classes for each enemy, but definitions of enemies in some file where all enemy types can be found. I really don't need that level of complexity for my game. I'm still using a component based model to some degree, but each Enemy type gets defined on its own class. Java Annotation processing. Give each enemy subclass an annotation like @EnemyType("whatever"), then code an annotation processor that writes in a file all available enemy types. Any time a new class is added the file gets updated after compilation.This gives me a feeling of failure even if its a good solution, it's very dependant on Java, so it means I cant think of a general design good for any kind of language. Also I think that this would be too much work for something so simple. I would like to see comments on these ideas and other possible solutions Thanks

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• Do I have to change my company to make sure I'm good enough? [closed]

  - by superM

  I have been working as a developer since my fourth year of university until now. I'm getting my master's degree next year (in math modeling). I've worked for the same company all the time, first on .Net, then on Android, and now .Net again. It seems I'm doing quite well in my current company. Some of my coursemates have tried to work in my company, but they failed after some time. This (and not only this) makes me think that I'm really worth something. But we're working on a very specific project. I was wondering if I am good enough and if I can make it in another company. I love my current job, but sometimes I have a feeling that I'm not moving on. So, is it possible to keep improving when working at the same company with the same technology and at similar tasks? I know that most of the programmers go from one place to another very frequently. Is it the only way?

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