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• Becoming an expert vs boredom [closed]

  - by QAH

  I am a college student, and I love to program, period. I code all kinds of things in different kinds of languages. Although I enjoy programming, I have an extremely hard time sticking to one project for a long time. I attribute this shortcoming to my high level of curiosity, exploring different technologies, languages, libraries, etc. What would be best? Should I settle down more and spend time on becoming an expert in one or two programming fields, or should I be more of a jack of all trades, trying out all kinds of new technologies, languages, programming methods, etc.? I'm guessing that somewhere in the middle would be best. I'm always amazed at how many developers are able to create one or two projects, and develop on them for years. What techniques do you guys employ to help you stay focused on a project?

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• Unit testing multiple conditions in an IF statement

  - by bwalk2895

  I have a chunk of code that looks something like this: function bool PassesBusinessRules() { bool meetsBusinessRules = false; if (PassesBusinessRule1 && PassesBusinessRule2 && PassesBusinessRule3) { meetsBusinessRules= true; } return meetsBusinessRules; } I believe there should be four unit tests for this particular function. Three to test each of the conditions in the if statement and ensure it returns false. And another test that makes sure the function returns true. Question: Should there actually be ten unit tests instead? Nine that checks each of the possible failure paths. IE: False False False False False True False True False And so on for each possible combination. I think that is overkill, but some of the other members on my team do not. The way I look at it is if BusinessRule1 fails then it should always return false, it doesn't matter if it was checked first or last.

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• Get script for every action in SQL Server Management Studio

  I am always conscious to keep a record of all operations performed on my database servers. Operations through T-SQL in an SSMS query pane can easily be saved in query files. For table modifications through SSMS designer I have predefined setting to generate T-SQL scripts. However there are numerous database and server level tasks that I use the SSMS GUI and I would like to have a script of these changes for later reference. Examples of such actions through the SSMS GUI are backup/restore, changing compatibility level of a database, manipulating permissions, dealing with database or log files or creating/manipulating any login/user. I am looking for any way to generate T-SQL code for such actions, so that it may be kept for later reference

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• I`ve got some problems with new Acer Aspire S3

  - by xcariba

  I just got a new Acer Aspire S3 Laptop, and I've installed Ubuntu on it. Here is some problems: 1. Bluetooth (AR3012) can't find any devices. rfkill shows that everything is fine, but I still can't connect to any device. (Maybe it was turned off in stock windows?) 2. Can't change screen brightness (I've tried Timex's solution with new 3.2-rc kernel and some grub options, touchpad works fine,but I still can`t use Fn+Right/Left) 3. 720p video in all players(VLC, mplayer and totem) works wrong. I found some similar problems on intel video chips with vblank sync or something like that. Video plays as it should, but i always see a line which appears on action scenes (looks like some parts of a screen updates faster) Maybe there are some solutions from similar laptops that I can find? PS I've tried ubuntu 11.04 with old kernel and linux mint 12-rc with 3.2-rc2 kernel.

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• What is a normalized Vector?

  - by draiden

  Can someone explain the following code? I need to learn what each part means so I can turn it into enemy movement in a space shoot-em-up Vec2d playerPos; Vec2d direction; // always normalized float velocity; I get the above is naming two 2d Vector objects, and creating a variable called velocity. I'm not sure what the normalized comment is about, though. update() { direction = normalize(playerPos - enemyPos); playerPos = playerPos + direction * velocity; }

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• How far can you get in iOS without learning PhotoShop or another graphic design program? [on hold]

  - by Aerovistae

  I'm in the process of learning iOS, and I'm coming from a web dev background where CSS controls 70-90% of the UI, and Python/C++ desktop dev where there are highly customizable UI toolkits for most things. I'm trying to figure out how people make good-looking apps without graphic design skills. You always hear about some 8 year old or 14 year old who made a successful app. So I assume that even if the required code was relatively basic, the app must have looked good if it was a success. But I find it really unlikely that these kids have advanced PhotoShop skills as well as having learned iOS programming at such a young age. Frankly, the same goes for most independent app developers....as they say, unicorns don't exist. So what's the deal? Can you make a good-looking, market quality app without those skills? What are the limitations?

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• Contiguous Time Periods

  It is always more efficient to maintain referential integrity by using constraints rather than triggers. Sometimes it isn't obvious how to do this. Until a recent idea by Alex Kuznetsov, the history table presented problems for checking data that were difficult to solve with constraints. Joe Celko explains. Free trial of SQL Backup™“SQL Backup was able to cut down my backup time significantly AND achieved a 90% compression at the same time!” Joe Cheng. Download a free trial now.

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• How do I sync music to my Sony Walkman (Z Series) using Rhythmbox?

  - by Mark Paskal

  I have recently purchased the new Walkman Z from Sony. I can transfer music by mounting it as a drive, but I would prefer to use Rhythmbox to do so. My other Android devices and MP3 players from the past have always just shown up without any tweaking. Using Nautilus to transfer the files is possible but for some reason Nautilus still makes a trash folder on removable drives. Deleting the trash folder anew is really annoying to do every time I delete music from the device. How can I use Rhythmbox to transfer and remove songs instead?

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• Using Visual Studio 2010s Debugger PIN Feature

  One of the very cool new features in Visual Studio 2010 is the ability to Pin a variable you are watching, right in the place you want to see it.  Its always been a hassle to have to add a... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How difficult it is to develope Apps for Android and iOS? [on hold]

  - by netsetter

  I'm an experienced web developer in PHP, HTML, Javascript, MySQL, CSS and I'm running communities where people can register to be able to login and do some stuff. Now more and more people are requestion an App, I told them that I have no time and experience to develope Apps with many functions for such complex communities I am running, but then the users told me what would be enough for them and this sounds already simpler to me: An app to install on Android / iOS just to be able to login (+ autologin), so they appear always online in the community when they have internet connection. Then only 1 function like a counter of new activities regarding their user account (new messages, new replies, etc..), and if they click on the app then a browser window will open to read the info at the main website. So, what you think, it will be a big thing to develope such an app for the members? Is there a big diffrence between developing for Android and iOS? How to test the App if you don't have an Android or iOS phone in example?

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• At what point does a good programmer know he is skilled programmer? [closed]

  - by Eritrea

  Possible Duplicate: How Can I Know Whether I Am a Good Programmer? I am just guessing, there is no end to programming, there is always someone who know what you do not know, once you learn it all something evolves out of somewhere, and you have to learn that one. It is a perpetually process eventually. But, at what point can you consider yourself, you are worth much in the programming world? By the amount of your reputation on Stackechange or if you create your own software...? When can you even know?

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• Can GJK be used with the same "direction finding method" every time?

  - by the_Seppi

  In my deliberations on GJK (after watching http://mollyrocket.com/849) I came up with the idea that it ins not neccessary to use different methods for getting the new direction in the doSimplex function. E.g. if the point A is closest to the origin, the video author uses the negative position vector AO as the direction in which the next point is searched. If an edge (with A as an endpoint) is closest, he creates a normal vector to this edge, lying in the plane the edge and AO form. If a face is the feature closest to the origin, he uses even another method (which I can't recite from memory right now) However, while thinking about the implementation of GJK in my current came, I noticed that the negative direction vector of the newest simplex point would always make a good direction vector. Of course, the next vertex found by the support function could form a simplex that less likely encases the origin, but I assume it would still work. Since I'm currently experiencing problems with my (yet unfinished) implementation, I wanted to ask whether this method of forming the direction vector is usable or not.

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• Pooling (Singleton) Objects Against Connection Pools

  - by kolossus

  Given the following scenario A canned enterprise application that maintains its own connection pool A homegrown client application to the enterprise app. This app is built using Spring framework, with the DAO pattern While I may have a simplistic view of this, I think the following line of thinking is sound: Having a fixed pool of DAO objects, holding on to connection objects from the pool. Clearly, the pool should be capable of scaling up (or down depending on need) and the connection objects must outnumber the DAOs by a healthy margin. Good Instantiating brand new DAOs for every request to access the enterprise app; each DAO will attempt to grab a connection from the pool and release it when it's done. Bad Since these are service objects, there will be no (mutable) state held by the objects (reduced risk of concurrency issues) I also think that with #1, there should be little to no resource contention, while in #2, there'll almost always be a DAO waiting to be serviced. Is my thinking correct and what could go wrong?

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• How to prevent Ad blocker to hide your images on your website ?

  - by Anirudha

  Originally posted on: http://geekswithblogs.net/anirugu/archive/2013/07/03/how-to-prevent-ad-blocker-to-hide-your-images-on.aspxAdblocker always block the images that start with “ads”. this means ads1.png,.jpg or gif have more tendency to be blocked by adblockers in Browser like Firefox and chrome. Recently Adblock plus come to Internet Explorer.   To solve this problem. Replace image name ads with Eds. It will never be blocked. This way you can prevent your banner on your website from being hidden.

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• Chrome window freezes in Ubuntu

  - by Dragon5689

  Sometimes, especially when I open pages that have some kind of multimedia contents, Chrome freezes. It always happens directly after opening a new tab. In contrast to the way Chrome usually has only tabs crashing, the entire windows freezes. If I have multiple separate Chrome windows open, the others keep working. I run Ubuntu 12.04 and Chrome in version 20.0.1132.47 but this has been going on since I last set up my machine around half a year ago. Anyone having the same problems or an idea what could be wrong here?

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• Are there any surveys on to what degree developers like or hate scrum ?

  - by dparnas

  Background: During a conference an analyst pointed out in a tweet that developers hate scrum. Myself and another person responded that this was not the case, and started discussing different scenarios on why developers would dislike scrum. One of the scenarios where that lazy developers are not able to hide in a scrum project. They are constantly challenged by the team to contribute. This discussion resulted in a blog post and video http://elsewhat.com/2010/05/20/lazy-developers-hate-agile-and%C2%A0scrum/ I've gotten three comments which I've tried to answer in a neutral way, but they comments do point out that there are some people who loathe scrum (and I am always 100% certain they are not lazy developers). Question Have there ever been a survey among developers on to what degree developers like or hate scrum ?

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• Ubuntu 12.10 installation. Hit or miss Booting

  - by Robert

  I just recently downloaded and installed Ubuntu 12.10. I also completely wiped the laptop. The Ubuntu OS will only boot part of the time but never on the first time. Always, the first start up will automatically go to a purple screen and stay there. At first I waited for 45 minutes and nothing changed. Once I held down the power button to turn it off, I turned it back on to see the Asus screen followed by the grub menu. I can select "Ubuntu" and then there is a white box blinking in the top left corner. Then, it will either keep blinking or transfer to the Ubuntu loading screen(everything works fine if it gets to the loading screen). This has never happened before with prior versions of Ubuntu. Any ideas are helpful. Thanks!

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• How do you stay motivated for hobby projects?

  - by aubreyrhodes

  I started seriously programming as a hobbiest, student and then intern about 4 years ago and I've always done small projects on the side as a learning exercise. Schools over now though, and I spend my days at work as a software developer. I would still love to do projects on the side to learn about areas in computer science that I'm not exposed to at work, but I've noticed that after 8 hours of starring at an IDE it's far to tempting to veg out. Any time I do get up the gumption to work on something for a few hours lately it's gotten left by the wayside. Anyone have any advice for sticking with side projects when you spend most of your day coding?

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• As a Qt GUI programmer, how to improve (career & skill)?

  - by linjunhalida

  hello, I'm a python & Qt programmer, and my daily job is create small PC GUI programs ship with hardware devices. the problem is, My job is simple, read/write data to device by using serial port(pyserial), display and edit data(PyQt + PyQwt), that's all. although I'm a linux user, my program is running under windows XP, but thanks to PyQt, I can still develop under linux. And I'm always afraid of being replaced by the people cheaper and younger than me in the future. (I'm 26 now.. not too much time for playing..) So I need improve myself, and make me more competitive in the global market, and I like programming, and want coding till the end of my life. any roadmap suggestion?

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• What to do if I hate C++ header files?

  - by BlaXpirit

  I was always confused about header files. They are so strange: you include .h file which doesn't include .cpp but .cpp are somehow compiled too. NOTE: I UNDERSTAND EVERYTHING ABOUT THE HEADERS, PLEASE DON'T TELL ME I'M STUPID OR SHOULD USE OTHER LANGUAGE Recently I joined a team project, and of course, both .h and .cpp are used. I understand that this is very important, but I can't live with copy-pasting every function declaration in each of multiple classes we have. How do I handle the 2-file convention efficiently? Are there any tools to help with that, or automatically change one file that looks like example below to .h and .cpp? (specifically for MS VC++ 2010) class A { ... Type f(Type a,Type b) { //implementation here, not in another file! } ... }; Type f(Type a) { //implementation here } ...

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• What is the point in using real time?

  - by bobobobo

  I understand that using real time frame elapses (which should vary between 16-17ms on average) are provided by a lot of frameworks. GetTimeElapsedSinceLastFrame, and it gives you the wall clock time. But should we use this information in basic physics simulation? It looks to me to be a bad idea. Say there is a slight lag on the machine, for whatever reason (say a virus scanner starts up). The calculations all jump, and there is no need for this. Why not use a virtual second and ignore wall clock time? For gameplay on the level of Commander Keen, shouldn't you always use the virtual second and not real-time? (Besides stopwatch timing for race games) I don't see a need to use real time and not a fixed 16ms time step.

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• How do you properly word a Google search when you don't even have a solution in mind? [closed]

  - by Bruno Romaszkiewicz

  So, I'm stuck on a problem, looking for a solution, my rubber duck can't help me, my co-workers can't help me. Next natural step is research, right? Google can help me, He always can. Or so I'm told. My problem is, I never found much use for Google when looking for a programming solution, it's very useful for finding how to implement one, but when you don't even know where to start, how do you properly word a Google search? Is there any other option?

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• why doesn't cron complete script

  - by brickinthewall

  i have a backup script (rsync via ssh) which is run by cron (configured in /etc/crontab) 0 2 * * * root /bin/bash --login /opt/aebackup/sshbackup.sh if i run it as logged in root like following it runs prefectly fine. root@server:~# /opt/aebackup/sshbackup.sh if i run it via cron it would just stop after a while (not always on the same task in the script.. it seems pretty random, like the process is killed at some point randomly) does anyone have an idea why my cron would do that? thanks for anything.. i'm desperate!

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• Need to test .properties one by one in every possibility?

  - by ??? Shengyuan Lu

  For example, there are some key-value configuration in .properties file. Such like someFeatureEnable=true. It must be bool type value which will be parsed by framework, in my case it's typical Java Spring configuration. Spring will handle the configuration and throw Exception when users set someFeatureEnable=123. My question is: if there many properties in .properties file, Is it worth testing them one by one? It's quite troublesome and low priority. The .properties file is always configured by tech administrator stuff. Limited chances that they will mess up the configuration. Thanks!

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• Driven2Distraction &ndash; New South African Developer Podcast

  - by MarkPearl

  For those out there that are interested… I am now one of the hosts of the Driven2Distraction podcast. Being a fan of podcasts like .Net Rocks and Hanselminutes for years now, I have always wanted to be involved in the recording of a podcast and now that time has finally come. What makes the Driven2Distraction podcast different from all the others out there is its uniquely South African flair. It’s focus is towards Software Development in the Southern Africa – and has a mix of “what happening locally” episodes as well as proper “interview style” episodes of local developers and visitors from overseas. If you are interested you can follow the show on twitter on @d2dpodcast or visit the site

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