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• help with yes/no radio button for multiple questions pull from database

  - by Darlene

  hey guys i need a little help with this questionaire form. The tables currently using are: user userid| username answers aswerid|quesid|ans|userid|date ques quesid|ques The form below is what im using however i'm gettin errors for radio button.... could anyone offer advice? $query = mysql_query("SELECT * FROM ques", $con) or die("Cannot Access tblprequeations From Server"); echo"<div id='quesform' class='quesform'>"; echo"<form name='QForm' method='post' action='answers.php' onsubmit='return validateQForm(this);'>"; echo"<p>"; while($row = mysql_fetch_array($query)) { echo"<p>"; echo"<label>".$row['quesid']."</label>&nbsp; &nbsp;"; echo"<label>".$row['ques']."</label>&nbsp; &nbsp;"; echo"<input type='radio' name='ans' value='yes' if (isset($_POST['ans']) && $_POST['ans'] == 'yes') echo'checked'/>"; echo"<input type='radio' name='ans' value='no' if (isset($_POST['ans']) && $_POST['ans'] == 'no') echo'checked'/>"; echo"</p>"; } echo"</p>";

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• how embed a video on EaselJS [on hold]

  - by user3697195

  i try to make a videoplayer with EaselJS and the console dont says about it this is my HTML http://pastebin.com/djY4cpyX this is my Javascript function init() { var stage = new createjs.Stage('gameCanvas');; video = document.createElement('video'); video.setAttribute('webkit-playsinline'); video.src = 'js/bitmap/trailer.mp4'; var Video = new createjs.Bitmap(video); stage.addChild(Video); createjs.Ticker.addEventListener(stage); createjs.Ticker.setFPS(24); stage.update(); }

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• Programming Language Family Tree?

  - by user134353

  As a man interested in programming, I must ask if there is a cataloged hierarchy of languages. I'd like to learn to actually understand what's happening- that is to say, I don't want to use a compiler until I understand what a compiler does and how to make my own. I really do want to start from total scratch. I'm told that means "machine code"? I don't know. What I do know is that "C++" is not the start. I'm not interested in learning that until I can actually break software down to its very base and see how the pieces go together.

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• I am confused between PHP and ASP.NET to choose as a career in Indian software development context

  - by Confused_Guy

  I need your help(specially from the software professionals of India). I have completed MCA in 2009. After that instead of joining software company I did a Teaching job nearby by home. In the mean time I prepared myself for public sector jobs(bank). I continued my job for 1 year more and left it in 2010. Now in 2012 ,I feel that I should have done the software jobs,so that I could earn my bread and butter and in the mean time I could have prepared for the job.Because,according to my qualification it will give me the best salary. Now I want to go back in software industries. Now all of them are asking for experiences.And I don't have any.....So which language should I learn? And what should I do,because I have two year gap. Some of my friends suggested me to go with PHP as its easier and quicker to get job in India. But Here the PHP guys are getting less salary as compared to ASP.NET. I am planning to begin with PHP and but is it possible to switch to ASP.NET after two years experience. JAVA: I know upto servlet & JSP. Which is nothing in current market. ASP.NET: I know the basics of asp.net upto database connection ie(Gridview). PHP: Only the basics. So what should I do now. Which is most demanding. Does PHP is good, I feel its more like JSP pages. Please guide me, All your suggestions are needed for me.

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• anyone familiar with these analytic questions?

  - by Moon

  So...my recruiter just called me to confirm my interview on Thurs. He also mentioned that I am going to be asked to answer for two analytic questions. He gave me a little bit about those questions. There are eight balls. One of them is defective. There are three incandescent light bulbs inside a room, but switches are placed outside. These are all he said. I think that these are not completed question. Anyone knows what questions these are?? Does my question belong to programmer.stackexchange.com? I thought it would because it is related to interview questions.

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• A good language for c# dev to expand his mind [closed]

  - by Jan Kratochvil

  I have some free time on my hands and I was thinking about learning a new language. I do not plan to use it in my day-to-day job, but I rather want to expand my way of thinking to get a better sense where the dev world is heading from a language perspective and to don't get stuck in my way when programming by rather try new approaches. I was thinking either a functional language, like Haskell or F# (which is a bit more 'pragmatic from a .NET dev standpoint) or something dynamic (like Python, that in my oppinion has nicer syntax than Ruby). What can you recommend that is enjoyable, at least a bit practical, but most of all, new (from a c# dev perspective). I appreciate any answers.

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• How do I avoid the complexity concerns of frameworks while keeping my team marketable?

  - by Desolate Planet

  When deciding upon how to design a software project with my colleagues, most suggestions tend to be for using specific frameworks "because it's popular in the job market" or "that's the framework that gets recruiters on the phone," and never what I'm looking for which is, "because it's a good fit for the project as it makes the system more adaptive to future changes and makes life easier for developers." I didn't start looking at projects in this way until I started reading up on domain-driven design. I've found that the actual domain is hidden deep under the frameworks used and it's hard to learn the business processes that have been implemented by the software product. Is there a way to marry the two competing goals: getting exposure as a development team while still being able to avoid complexity? Are frameworks that compromise, or are there other solutions out there?

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• Is Operator Overloading supported in C

  - by caramel23

  Today when I was reading about LCC(windows) compiler I find out it has the implemention for operator overloading . I'm puzzled because after a bit of googling , it has been confirm that operator overloading ain't support in standard C , but I read some people's comment mentioning LCC is ANSI-compliant . So my real question is , is LCC really standard C or it's just like objective-c , a C variant with object-oriented feature ?

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• Bug severity classification issues

  - by KyleMinn

  In a book I have, there is a following classification of defect: Critical : A defect receives a “critical” severity level if one or more critical system functionalities are impaired by a defect with is impaired and there is no workaround. High: A defect receives a “high” severity level if some fundamental system functionalities are impaired but a workaround exists. Medium: A defect receives a “medium” severity level if no critical functionality is impaired and a workaround exists for the defect. Low: A defect receives a “low” severity level if the problem involves a cosmetic feature of the system. To be honest, I do not get it.. For example point 2. What if fundamental but not critical feature is impaired and there is NOT a workaround. The same for point 3: what if no critical functionality is affected but there is no workaround? E.g. optional field in the registration form does not work. No workaround but barely an issue.

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• How can I get the data from the json one by one by using javascript/jquery? [on hold]

  - by sandhus

  I have the working code which fetches all the records from the json, but how can I make it available one by one on the click of the button or link? The following code is working to fetch all the records: <!doctype html> <html> <head> <meta charset="utf-8"> <title>jQuery PHP Json Response</title> <style type="text/css"> div { text-align:center; padding:10px; } #msg { width: 500px; margin: 0px auto; } .members { width: 500px ; background-color: beige; } </style> </head> <body> <div id="msg"> <table id="userdata" border="1"> <thead> <th>Email</th> <th>Sex</th> <th>Location</th> <th>Picture</th> <th>audio</th> <th>video</th> </thead> <tbody></tbody> </table> </div> <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"> </script> <script type="text/javascript"> $(document).ready(function(){ var url="json.php"; $("#userdata tbody").html(""); $.getJSON(url,function(data){ $.each(data.members, function(i,user){ var tblRow = "<tr>" +"<td>"+user.email+"</td>" +"<td>"+user.sex+"</td>" +"<td>"+user.location+"</td>" +"<td>"+"<img src="+user.image+">"+"</td>" +"<td>"+"<audio src="+user.video+" controls>"+"</td>" +"<td>"+"<video src="+user.video+" controls>"+"</td>" +"</tr>" ; $(tblRow).appendTo("#userdata tbody"); }); }); }); </script> </body> </html> I used the json_encode function in the php file to encode the sql db. How can i achieve this?

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• Multidimensional multiple-choice knapsack problem: find a feasible solution

  - by Onheiron

  My assignment is to use local search heuristics to solve the Multidimensional multiple-choice knapsack problem, but to do so I first need to find a feasible solution to start with. Here is an example problem with what I tried so far. Problem R1 R2 R3 RESOUCES : 8 8 8 GROUPS: G1: 11.0 3 2 2 12.0 1 1 3 G2: 20.0 1 1 3 5.0 2 3 2 G3: 10.0 2 2 3 30.0 1 1 3 Sorting strategies To find a starting feasible solution for my local search I decided to ignore maximization of gains and just try to fit the resources requirements. I decided to sort the choices (strategies) in each group by comparing their "distance" from the multidimensional space origin, thus calculating SQRT(R1^2 + R2^2 + ... + RN^2). I felt like this was a keen solution as it somehow privileged those choices with resouce usages closer to each other (e.g. R1:2 R2:2 R3:2 < R1:1 R2:2 R3:3) even if the total sum is the same. Doing so and selecting the best choice from each group proved sufficent to find a feasible solution for many[30] different benchmark problems, but of course I knew it was just luck. So I came up with the problem presented above which sorts like this: R1 R2 R3 RESOUCES : 8 8 8 GROUPS: G1: 12.0 1 1 3 < select this 11.0 3 2 2 G2: 20.0 1 1 3 < select this 5.0 2 3 2 G3: 30.0 1 1 3 < select this 10.0 2 2 3 And it is not feasible because the resources consmption is R1:3, R2:3, R3:9. The easy solution is to pick one of the second best choices in group 1 or 2, so I'll need some kind of iteration (local search[?]) to find the starting feasible solution for my local search solution. Here are the options I came up with Option 1: iterate choices I tried to find a way to iterate all the choices with a specific order, something like G1 G2 G3 1 1 1 2 1 1 1 2 1 1 1 2 2 2 1 ... believeng that feasible solutions won't be that far away from the unfeasible one I start with and thus the number of iterations will keep quite low. Does this make any sense? If yes, how can I iterate the choices (grouped combinations) of each group keeping "as near as possibile" to the previous iteration? Option 2: Change the comparation term I tried to think how to find a better variable to sort the choices on. I thought at a measure of how "precious" a resource is based on supply and demand, so that an higer demand of a more precious resource will push you down the list, but this didn't help at all. Also I thought there probably isn't gonna be such a comparsion variable which assures me a feasible solution at first strike. I there such a variable? If not, is there a better sorting criteria anyways? Option 3: implement any known sub-optimal fast solving algorithm Unfortunately I could not find any of such algorithms online. Any suggestion?

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• Fiscal quarter vs calendar quarter

  - by Geotarget

  I'm building a Date/Time class with a "configurable quarter" system as follows. User specifies which month the quarter starts at (config) Set of functions to deal with quarters (next quarter, prev quarter, etc) All quarter functions respect the config Now this class is primarily to be used for fiscal quarter calculations. So assuming I have this class with a configurable "quarter" system, would I need another parallel set of functions for calendar quarters too? What are the applications for calendar quarters anyways? By calendar quarters I mean where Q1 is Jan-Mar, and Q4 is Oct-Dec. By fiscal quarters I mean whatever standard your Country uses (in India Q1 starts in April)

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• Identifying which pattern fits better.

  - by Daniel Grillo

  I'm developing a software to program a device. I have some commands like Reset, Read_Version, Read_memory, Write_memory, Erase_memory. Reset and Read_Version are fixed. They don't need parameters. Read_memory and Erase_memory need the same parameters that are Length and Address. Write_memory needs Lenght, Address and Data. For each command, I have the same steps in sequence, that are something like this sendCommand, waitForResponse, treatResponse. I'm having difficulty to identify which pattern should I use. Factory, Template Method, Strategy or other pattern. Edit I'll try to explain better taking in count the given comments and answers. I've already done this software and now I'm trying to refactoring it. I'm trying to use patterns, even if it is not necessary because I'm taking advantage of this little software to learn about some patterns. Despite I think that one (or more) pattern fits here and it could improve my code. When I want to read version of the software of my device, I don't have to assembly the command with parameters. It is fixed. So I have to send it. After wait for response. If there is a response, treat (or parse) it and returns. To read a portion of the memory (maximum of 256 bytes), I have to assembly the command using the parameters Len and Address. So I have to send it. After wait for response. If there is a response, treat (or parse) it and returns. To write a portion in the memory (maximum of 256 bytes), I have to assembly the command using the parameters Len, Address and Data. So I have to send it. After wait for response. If there is a response, treat (or parse) it and returns. I think that I could use Template Method because I have almost the same algorithm for all. But the problem is some commands are fixes, others have 2 or 3 parameters. I think that parameters should be passed on the constructor of the class. But each class will have a constructor overriding the abstract class constructor. Is this a problem for the template method? Should I use other pattern?

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• Java GNOME bindings, are those a good idea?

  - by Phobia

  What do you think of Java's GNOME bindings and I was surprised to know that the latest version of the bindings was released this month and they're backed by a company that uses them, which means that there's a considerable amount of activity in the project, and that it's not going to be ditched anytime soon Is this going to be a second chance for Java on the desktop, since GTK+ is cross platform like swing, but less bloated and more responsive Should I be learning how to develop applications using it? or it's not worth the time?

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• Is "convention over configuration" not violating basic programming principles?

  - by Geerten

  I was looking at the WPF MVVM framework Caliburn.Micro and read that a lot of standard things are based on naming conventions. For example, automatic binding of properties in the View to properties in the ViewModel. Although this seems to be convenient (removes some boilerplate code), my first instinct reaction is that it isn't completely obvious to a new programmer that will read this code. In other words, the functionality of the application is not completely explained by its own code, but also by the documentation of the framework. EDIT: So this approach is called convention over configuration. Since I could not find any questions concerning this, I altered my question: My question is: Is convention over configuration a correct way of simplifying things, or is it violating some programming principles (and if so, which ones)?

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• Expanding development team for a startup

  - by acjohnson55

  I'm a software developer and co-founder of a start up that's in a sprint to launch a web app the next 2 months. We have about 3 months of burn time we have before we need to get some funding. By that time, we want to have a product with active users, and ideally some revenue. I'm fairly confident that I can accomplish the task by myself, but I have also never launched a project of this magnitude. The better product we can build in this timespan, the faster we can grow our user base, and the better our fundraising options will be. So I'm looking to bring someone onboard to hack with me. Maybe more than one person. Good help is hard to find, as we all know, and while I'm willing to share equity, I also want that to be contingent on a productive fit. What is the best approach to a trial-type framework for hiring another developer? Something where the other person feels that their work will be rewarded if they do well and that they can't be left empty-handed at my whim, but where I know that if it turns out not to be a good fit, I can pull the cord without significant loss?

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• Should I create an Enum mapping to my database table

  - by CrazyHorse

  I have a database table containing a list of systems relevant to the tool I am building, mostly in-house applications, or third-party systems we receive data from. This table is added to infrequently, approx every 2 months. One of these systems is Windows itself, which is where we store our users' LANs, and I now need to explicitly reference the ID relating to Windows to query for user name, team etc. I know it would be bad practice to embed the ID itself into the code, so my question is what would be the best way to avoid this? I'm assuming my options are: create a global constant representing this ID create a global enum containing all systems now create a global enum and add systems to it as & when they are required in the code retrieve the ID from the database based on system name I appreciate this may seem a trivial question, but I am going to have many situations like this during the course of this build, and although we are in complete control of the database I would like to conform to best practice as far as possible. Many thanks!

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• Alternatives to JS in the browser: your experience [closed]

  - by Andrea

  In these days there are many projects whose aim is to bring new languages to the browser by compiling them to JavaScript. Among the others one can mention ClojureScript, CoffeScript, Dart, haXe, Emscripten, Amber Smalltalk. I understand that in part the response to this answer depends on the particular project. But, anyway: Have you tried any of them? Are these tentatives suitable for production sites? Should I want to try one of those, what are the downsides I should carefully evaluate? By the way, I expect the answer to be slightly misleading for CoffeeScript, since its semantics is very close to that of JavaScript, so I guess it should be easier to make it work seamlessly with the existing JavaScript ecosystem.

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• Calculation of Milestones/Task list

  - by sugar

  My project manager assigned me a task to estimate the development time for an iPad application. Lets assume that I gave estimation of 15 working days. He thought that the number of days where too many and client needed the changes to the application urgently (as in most of cases). So, he told me: "I am going to assign two developer including you and as per my understandings and experience it won't take more than seven working days." Clarifications I was given the task of estimating development time for an individual. How could I be sure that 2 developers are going to finish it within 7 days? (I am new to team & I hardly know the others abilities) Questions Why do most of project managers / team leaders have understandings like: If one developer requires N days, Then two developers would require N/2 days, Do they think something like developer = s/w production machines? Should a team member (developer, not team lead or any higher post) estimate other developers work? I didn't deny anything in the meeting and didn't said, but what should be the appropriate answer to convince them that N/2 formula that they follow is not correct?

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• Depending on fixed version of a library and ignore its updates

  - by Moataz Elmasry

  I was talking to a technical boss yesterday. Its about a project in C++ that depends on opencv and he wanted to include a specific opencv version into the svn and keep using this version ignoring any updates which I disagreed with.We had a heated discussion about that. His arguments: Everything has to be delivered into one package and we can't ask the client to install external libraries. We depend on a fixed version so that new updates of opencv won't screw our code. We can't guarantee that within a version update, ex from 3.2.buildx to 3.2.buildy. Buildy the function signatures won't change. My arguments: True everything has to be delivered to the client as one package,but that's what build scripts are for. They download the external libraries and create a bundle. Within updates of the same version 3.2.buildx to 3.2.buildy its impossible that a signature change, unless it is a really crappy framework, which isn't the case with opencv. We deprive ourselves from new updates and features of that library. If there's a bug in the version we took, and even if there's a bug fix later, we won't be able to get that fix. Its simply ineffiecient and anti design to depend on a certain version/build of an external library as it makes our project difficult in the future to adopt to new changes. So I'd like to know what you guys think. Does it really make sense to include a specific version of external library in our svn and keep using it ignoring all updates?

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• Modern workflow / project architecture with PHP

  - by Sprottenwels

  I wonder how one professional developer would design the backend-part of his application. I try to use PHP as seldom as possible and only for data serving/saving purposes. To do so, i would create a module/class for every greater part of my application, then write some single script files which are called by javascript. E.g: User clicks a "retrieve data" button javascript will call retrieveData.php retrieveData.php will create an instance of the needed class, then executes myInstance-retrieve() the data is returned to my JS by retrieveData.php However, i see some disadvantages in this practice: I will need a single scipt file for every action, (e.g retrieveData.php, saveData.php etc) I need a man-in-the-middle step: from JS to my single script, to my classes How are modern applications designed to accomplish what i need to do?

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• Try/Catch or test parameters

  - by Ondra Morský

  I was recently on a job interview and I was given a task to write simple method in C# to calculate when the trains meet. The code was simple mathematical equation. What I did was that I checked all the parameters on the beginning of the method to make sure, that the code will not fail. My question is: Is it better to check the parameters, or use try/catch? Here are my thoughts: Try/catch is shorter Try/catch will work always even if you forget about some condition Catch is slow in .NET Testing parameters is probably cleaner code (Exceptions should be exceptional) Testing parameters gives you more control over return values I would prefer testing parameters in methods longer than +/- 10 lines, but what do you think about using try/catch in simple methods just like this – i.e. return (a*b)/(c+d); There are many similar questions on stackexchnage, but I am interested in this particular scenario.

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• How do you make a real low profile exit from your current job?

  - by Fanatic23

  This came up recently when a friend of mine left her current job. She really wanted to make a very low profile exit, but the news leaked and there really was too much noise -- some bad, some downright embarrassing not to mention management foul mouthing her. All of this, despite her contribution to the team being very substantial. So here's my question: How do you make a real low profile exit from a company? Is something like that even a reality given that a fair number of people will know you in office, not to mention your linkedin and facebook.

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• Should I be learning Linq, Direct SQL Commands (in .net), EF or other?

  - by Wil

  Basically, I have a very good knowledge of plain old SQL coming from Classic ASP programming. Over the past couple of months, I have been learning C# and today was my first full day at MVC 3 (Razor) which I am loving! I need to get back in to Databases and I know that writing SqlCommand everywhere is obviously outdated (although it is nice I can still do it!). I used to go to a great usergroup as an IT Pro and the developer stuff went completely over my head, however I do remember a few things which kept coming up such as LINQ... However, that was some time ago and now the same people on Twitter are saying how out dated it is. I have tried to do research on both and I am clueless as to what direction I should go in, or when to use one over another (if learning both is a good thing). I am more so confused as I thought EF was a part of the .Net Framework, however, reading through the quick start guide, I had to download a component using Nuget. ... Basically I am out of my depth here and just need some honest advice of where to go!

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• Wi-Fi triangulation using android smartphone

  - by user1887020

  How to make application for wifi triangulation using android platform? This project will be implemented inside the building. No GPS needed. Just using wifi only and doing triangulation to get the current position of the user inside the building. I got minimum 3 access point to implement it. But how to start code in android and integrate triangulation inside android coding? I got the algorithm to do it.. but is there any chance that I can get it done? Because this project is actually want to replace the floor directory board into a smartphone floor directory so that user can find their way to their room for example to the lab. public class Triangulation { public Triangulation() { int dist_1, dist_2, dist_3; //variable for the distances int x1, x2, x3; //coordinates of x int y1, y2, y3; //coordinates of y int final_dist1, final_dist2; //final distance after calc dist_1 = 1; dist_2 = 2; dist_3 = 3; x1 = 5; //test inputs x2 = 2; x3 = 4; y1 = 2; y2 = 2; y3 = 5; final_dist1 = ((dist_1 * dist_1) - (dist_2 * dist_2) – (x1 * x1) + (x2 * x2) - (y1 * y1) + (y2 * y2)) / 2; final_dist2 = ((dist_2 * dist_2) - (dist_3 * dist_3) – (x2 * x2) + (x3 * x3) - (y2 * y2) + (y3 * y3)) / 2; initial_a1 = x1 - x2; initial_a2 = x2 - x3; initial_b1 = y1 - y2; initial_b2 = y2 - y3; //-----------------------STEP 1-------------------------------------- int a1 = initial_a1 / initial_a1; int a2 = initial_a2 / initial_a1; int b1 = initial_b1 / initial_a1; int b2 = initial_b2 / initial_a1; final_dist1 /= initial_a1; final_dist2 /= initial_a1; //-----------------------STEP 2-------------------------------------- a2 = a2 -a2; final_dist2 = -(initial_a2) * final_dist1 + final_dist2; //-----------------------STEP 3-------------------------------------- a2 /= b2; final_dist2 = final_dist2 / b2; b2 /= b2; //-------------------------STEP 4----------------------------------- b1 = b1 - b1; final_dist1 = -(initial_b1) * final_dist2 + final_dist1; } }

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