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• Can an object oriented program be seen as a Finite State Machine?

  - by Peretz

  This might be a philosophical/fundamental question, but I just want to clarify it. In my understanding a Finite State Machine is a way of modeling a system in which the system's output will not only depend on the current inputs, but also the current state of the system. Additionally, as the name suggests it, a finite state machine can be segmented in a finite N number of states with its respective state and behavior. If this is correct, shouldn't every single object with data and function members be a state in our object oriented model, making any object oriented design a finite state machine? If that is not the interpretation of a FSM in object design, what exactly people mean when they implement a FSM in software? am I missing something? Thanks

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• Is there a way to play the role of Javascript with any other language like C#?

  - by Gulshan

  Is there a way to play the role of Javascript with any other language like C#? One way came up in my head is, having silverlight installed, using C# instead of Javascript for all the client side scripting (Though C# is not a scripting language). Is it possible? I am not talking about something like GWT(Java) or Script#(C#). Probably the question can be stated as- "With silverlight installed, can I do everything supported by Javascript(like DOM manipulation etc) with C#?" Hope it's clearer.

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• Recommended language and IDE for simple linux application [on hold]

  - by niklon

  I want to write a simple program on Debian with Gnome. Application will act as a side bar, giving simple information on online servers statuses. I preferably have a black transparent background(Terminal-like). I'm asking this question because I was previously writing programs in .NET C# for myself, and now I don't want to get to Mono, but something more conventional. What language should I choose for this task? What would be the recommended way to do it?(eg. what IDE)

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• KnockoutJS 2.3.0 - Uncaught Error: You cannot apply bindings multiple times to the same element.

  - by Aligned

  Originally posted on: http://geekswithblogs.net/Aligned/archive/2013/07/25/knockoutjs-2.3.0---uncaught-error-you-cannot-apply-bindings-multiple.aspxI upgrade KnockoutJs through Nuget and started getting the error ‘Uncaught Error: You cannot apply bindings multiple times to the same element.’ when I used applyBindings after the main page load. I had some dynamically added DOM elements and re-applying bindings worked before. It always seemed like a workaround/hack, but now Knockout is telling me that I shouldn’t do it. The quick way to fix this is to use ko.cleanNode($(‘#id’) and this works. A different/possibly better way, as suggested by x0n might be to use templates and Knockout’s template binding (<script type=’text/html’>…</script>).   Thanks again to the StackOverflow community for quickly providing me with the solution. Check out my question for all the details.

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• Problem with all fn Keys for Thinkpad W520

  - by Ludwig

  I have a problem with the fn. I used a live version of Ubuntu 11.10 on a USB stick to install Ubuntu on my Thinkpad W520. The fn keys worked perfectly in the live version, but do not work in the installed version. I would like to know what I have messed up. I can't seem to find the fix on google, except for inserting the shortcuts by hand, which seems a little brutal, since I know they can work without prior configuration. Thanks in Advance. Edit: The keys just started working out of the blue. I don't really know what my system did or what maybe I did. However all keys work fine now. Sorry for putting this now useless question here.

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• How do I deal with code of bad quality contributed by a third party?

  - by lindelof

  I've recently been promoted into managing one of our most important projects. Most of the code in this project has been written by a partner of ours, not by ourselves. The code in question is of very questionable quality. Code duplication, global variables, 6-page long functions, hungarian notation, you name it. And it's in C. I want to do something about this problem, but I have very little leverage on our partner, especially since the code, for all its problems, "just works, doesn't it?". To make things worse, we're now nearing the end of this project and must ship soon. Our partner has committed a certain number of person-hours to this project and will not put in more hours. I would very much appreciate any advice or pointers you could give me on how to deal with this situation.

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• SQL SERVER – Retrieving Random Rows from Table Using NEWID()

  - by pinaldave

  I have previously written about how to get random rows from SQL Server. SQL SERVER – Generate A Single Random Number for Range of Rows of Any Table – Very interesting Question from Reader SQL SERVER – Random Number Generator Script – SQL Query However, I have not blogged about following trick before. Let me share the trick here as well. You can generate random scripts using following methods as well. USE AdventureWorks2012 GO -- Method 1 SELECT TOP 100 * FROM Sales.SalesOrderDetail ORDER BY NEWID() GO -- Method 2 SELECT TOP 100 * FROM Sales.SalesOrderDetail ORDER BY CHECKSUM(NEWID()) GO You will notice that using NEWID() in the ORDER BY will return random rows in the result set. How many of you knew this trick? You can run above script multiple times and it will give random rows every single time. Reference: Pinal Dave (http://blog.sqlauthority.com)   Filed under: PostADay, SQL, SQL Authority, SQL Function, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• How does one handle sensitive data when using Github and Heroku?

  - by Jonas

  I am not yet accustomed with the way Git works (And wonder if someone besides Linus is ;)). If you use Heroku to host you application, you need to have your code checked in a Git repo. If you work on an open-source project, you are more likely going to share this repo on Github or other Git hosts. Some things should not be checked in the public repo; database passwords, API keys, certificates, etc... But these things still need to be part of the Git repo since you use it to push your code to Heroku. How to work with this use case? Note: I know that Heroku or PHPFog can use server variables to circumvent this problem. My question is more about how to "hide" parts of the code.

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• Preparing for interview questions involving scale

  - by Chaitanya

  I have over 6 years of software development experience. I have worked on multiple platforms, including mobile. However, I have not had a chance of working on scale-related issues. As a consequence, whenever someone asks a question involving a million inputs in an interview, I find myself out of depth. How do I prepare for such questions? Any books/resources to refer to? There are books for Java and Data Structures and Concurrency, but I don't know about any definitive ones to learn about scaling.

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• What technologies are used for Game development now days?

  - by Monika Michael

  Whenever I ask a question about game development in an online forum I always get suggestions like learning line drawing algorithms, bit level image manipulation and video decompression etc. However looking at games like God of War 3, I find it hard to believe that these games could be developed using such low level techniques. The sheer awesomeness of such games defy any comprehensible(for me) programming methodology. Besides the gaming hardware is really a monster now days. So it stands to reason that the developers would work at a higher level of abstraction. What is the latest development methodology in the gaming industry? How is it that a team of 30-35 developers (of which most is management and marketing fluff) able to make such mind boggling games?

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• Grams to Pounds: A Domino Chain Reaction [Video]

  - by Jason Fitzpatrick

  Most of us have seen a domino knock down or two in our day, but this demonstration video shows how a series of increasingly larger dominoes allow a tiny domino to knock over a 100 pound domino. A domino can knock over another domino about 50% larger than itself. A chain of dominos of increasing size makes a kind of mechanical chain reaction that starts with a tiny push and knocks down an impressively large domino. The only question we have after watching the video is: where can we find 29 appropriately sized dominoes? [via Neatorama] HTG Explains: What Is Windows RT and What Does It Mean To Me? HTG Explains: How Windows 8′s Secure Boot Feature Works & What It Means for Linux Hack Your Kindle for Easy Font Customization

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• Does google contribute ranking from cdn.example.com to example.com?

  - by DesignerGuy

  Background From my understanding, http://mywebsite.com/image.jpg, can help the ranking of http://mywebsite.com in a search engine, such as Google (obviously the search engine of primary concern). So, SEO-wise, moving an image to http://whatever-cdn.com/my-account/image.jpg is bad. A popular solution is to use a CNAME record, such as http://cdn.mywebsite.com, so that image.jpg can be accessed at http://cdn.mywebsite.com/image.jpg. The question Does http://cdn.mywebsite.com/image.jpg rank as effectively as http://mywebsite.com/image.jpg ? Does it help boost the main http://mywebsite.com ? Or, does it rank independently because it is a subdomain? Is there another option (a way to use a CDN without sacrificing ranking)?

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• converting dates things from visual basic to c-sharp

  - by sinrtb

  So as an excercise in utility i've taken it upon myself to convert one of our poor old vb .net 1.1 apps to C# .net 4.0. I used telerik code conversion for a starting point and ended up with ~150 errors (not too bad considering its over 20k of code and rarely can i get it to run without an error using the production source) many of which deal with time/date in vb versus c#. my question is this how would you represent the following statement in VB If oStruct.AH_DATE <> #1/1/1900# Then in C#? The converter gave me if (oStruct.AH_DATE != 1/1/1900 12:00:00 AM) { which is of course not correct but I cannot seem to work out how to make it correct.

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• Is there a simple, safe way to trigger a GPU lockup on a susceptible computer?

  - by Abe

  Answers to my previous question, Ubuntu 12.04 froze, requiring powercycle. What should I look / grep for in the logs?, have led me to suspect that my computer is experiencing an intermittent GPU lockup. It has been happening about once a week, usually when I am using Chrome. Today it happened when I was creating a diagram on lucidchart I have a Dell Optiplex 755 with an ATI Radeon HD 2400 XT and dual monitors running in Xinerama mode. I am using 12.04 with the proprietary ATI driver installed. When the computer locks-up, I can still ssh in. And I would like to follow the instructions on reporting this provided at https://wiki.ubuntu.com/X/Troubleshooting/Freeze Is there a (safe) way to cause a GPU lockup so that I can go ahead and file a bug, rather than waiting until it happens again?

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• Breadcrumb for multiple categories

  - by Damodar Bashyal

  I post in multiple categories, so is it better to have: Consulting Services Implementation Service A Consulting Services Optimization Service A Consulting Services Upgrade Service A or, Consulting Services Implementation, Optimization, Upgrade Service A I was doing second way, the problem is google doesn't show 3rd set of crumbs. ie it only displays: Consulting Services on search result. But having multiple breadcrumbs on the page doesn't look good. any suugestions? Update For @PatomaS 's question I mean 3 lines of breadcrumbs, see above i have posted same article (Service A) in 3 categories (Implementation, Optimization, Upgrade). So you can reach same article through 3 categories. So whats the best breadcrumb to display on article 'Service A'?

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• How do I get the child of a unique parent in ActionScript?

  - by Koen

  My question is about targeting a child with a unique parent. For example. Let's say I have a box people can move called box_mc and 3 platforms it can jump on called: Platform_1 Platform_2 Platform_3 All of these platforms have a child element called hit. Platform_1 Hit Platform_2 Hit Platform_3 Hit I use an array and a for each statement to detect if box_mc hits one of the platforms childs. var obj_arr:Array = [Platform_1, Platform_2, Platform_3]; for each(obj in obj_arr){ if(box_mc.hitTestObject(obj.hit)){ trace(obj + " " + obj.hit); box_mc.y = obj.hit.y - box_mc.height; } } obj seems to output the unique parent it is hitting but obj.hit ouputs hit, so my theory is that it is applying the change of y to all the childs called hit in the stage. Would it be possible to only detect the child of that specific parent?

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• laptop-mode-tools and harddrive spinoff

  - by sagarchalise

  So I wanted to extend my laptop battery life. After googleing a lot I found many tips and tricks. Some even in this site as well. Then I found this package in synaptic as well laptop-mode-tools. Now I am not well aware of what harddrive spinoffs are, so I have a dilemma of installing this package as it seems to remove acpi support as well. So my question is, how reliable is this package in battery life extension and what configurations should I use with it ? Also I stumbled upon some posts saying spinoffs may kill the harddrive as well. So can anyone clearify with some configuration tips especially for laptop-mode-tools. Thanks in advance

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• How to download kde or gnome from synaptic for offline installation

  - by Arin Chakraborty

  I know how to install GNOME 3 and KDE using apt-get. But i want to know how to, only download, from synaptic package manager, these shells. When i search for kubuntu-desktop in synaptic then the download file shows nearly 4MB but i clearly remember the actual size was near 100 mb. Just for information both are already installed in my laptop. So the question is - How to download the actuall 100 mb KUbuNTU-DESKTOP so that i can just, without any hesitation install it in offline computer which is using ubuntu 12.04. Same for the GNOME 3. Please help me out !

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• Dual booting Ubuntu 12.04: UEFI and Legacy

  - by cmhughes

  I'm trying to dual boot Ubuntu 12.04 (or 12.10) with Windows 8 on a new Sony Vaio, but have run into some problems :) Specifically, my problems seem to come from choosing UEFI or Legacy as the Bootmode in the BIOS. Here is what I have found so far: Windows 8 needs to boot using UEFI, and doesn't work in Legacy mode Ubuntu (both 12.04 and 12.10) needs to boot using Legacy, and won't boot (at least from the live disk) in UEFI mode I have been able to boot Ubuntu using a live USB disc, provided that I change the Bootmode to Legacy. I haven't committed to installing it yet, because I don't really understand the consequences. My main concerns are that instead of simply selecting Windows or Ubuntu in Grub, I would also have to change my Bootmode every single time, which seems like a lot more trouble than it should be. So, the question: how can I install Ubuntu 12.04 or 12.10 in UEFI boot mode?

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• How do I explain the importance of NUNIT Test cases to my Colleagues [duplicate]

  - by JNL

  This question already has an answer here: How to explain the value of unit testing 6 answers I am currently working in Software Development for applications including lot of Mathematical Calculations. As a result there are lot of test cases that we need to consider. We donot have any NUNIT Test case system, I am wonderring how should I get the advantages of implementing the NUNIT testing in front of my colleagues and my boss. I am pretty sure, it would be of great help for our team. Any help regarding the same, will be higly appreciated.

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• Gaming with ATI open-source drivers

  - by user7174

  I have recently bought humble bundle 2 ( http://www.humblebundle.com/ ). Is there a way to run Braid using ATI's open-source drivers? The game always crashes. When do get it to start in windowed mode once i go to the first level it will crash. I am using the lastest version of Braid (ST3C ignored) When I use the proprietary drivers Braid works flawlessly and World of Goo performance is increased. However there is terrible screen tearing with the ATI propritary drivers. So my question is: How do I play Braid if I want to use the proprietary drivers?

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• On what basis would you split donation money among your open source team members without any strife?

  - by Vigneshwaran

  I am a developer of an open source project which is hosted in SourceForge. It started out as a little app then after some releases, it got more and more popular and it started consuming more time and responsibility from me. So I have enabled the donation option in SourceForge. I'm passionate to continue developing it for free but if (ever) any money comes in, how should I split it with my team? Should I split the amount equally among the number of team members? (50-50 as it is two-member team now) Number of classes, commits or any other valuable submissions by team members? Any other idea? What would you do in such situation? Please give your opinions. I hope this question will be useful for others.

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• Ubuntu 14.04 Notification incorrectly displayed

  - by xenolyse

  I have a problem with my notifications on Ubuntu 14.04 x64. The notifications are just plain text with a colored background, and are also strangely placed in the top left corner. I have no idea on how it changed. After one reboot it was just there.. Here is a picture of the problem in question.: As you can see the notification appear over the unified menu. How can I restore the original state of the notification bubble? Here are the settings in ~/.notify-osd slot-allocation = fixed bubble-expire-timeout = 10sec bubble-vertical-gap = 5px bubble-horizontal-gap = 5px bubble-corner-radius = 37,5% bubble-icon-size = 30px bubble-gauge-size = 6px bubble-width = 240px bubble-background-color = 131313 bubble-background-opacity = 90% text-margin-size = 10px text-title-size = 100% text-title-weight = bold text-title-color = ffffff text-title-opacity = 100% text-body-size = 90% text-body-weight = normal text-body-color = eaeaea text-body-opacity = 100% text-shadow-opacity = 100% If I check the org.freedesktop.Notifications.service(/usr/share/dbus-1/servies) it appears to use the correct one. [D-BUS Service] Name=org.freedesktop.Notifications Exec=/usr/lib/x86_64-linux-gnu/notify-osd

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• Ubuntu user credentials, file permissions

  - by user9843

  I am using Ubuntu 10.10 for web development by using the symfony framework. Normally I install Ubuntu Lamp (Turnkey edition), log in as root and configure all the necessary software in the server needed to work with symfony. (Samba, symfony etc) The problem is when I am root the file permissions are not set right for the Samba and symfony systems. All things I do/create in the terminal (CLI) of Ubuntu create file permissions for the user root. Off course I know how to change them afterwards but that takes up time I could spend programming. When ready I am using the box via my network, creating several site directorys directly from my pc on the server. There are multiple sites on this developer server as directorys under /var/www/ there are no virtual hosts. My question is how to create or set a user after installation of Ubuntu with the right credentials and rights?

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• Admin form that generates an email confirmation ends up in SPAM [duplicate]

  - by PJD Creative

  This question already has an answer here: How can I prevent my mail from being classified as spam? 10 answers I have an admin form that I have setup for a client, that generates an email confirmation from a template I have designer... It works really well but it ends up in spam some of the time, and this is real frustrating as it is just confirming some details for the customer of what they have just booked, not at all spam, and is accessed via a page where the admin requires login. Any suggestions as to why this may end up in spam. It does have dollar signs ($$) as it is confirming a price, im assuming this is one problem, the rest of it is just general dates and info about the confirmation. Is there any suggestions on how to get this out of spam? thanks in advance

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