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• Ways to earn money through programming and/or programming knowledge [closed]

  - by Jason Swett

  It occurred to me today that it might be useful to make a list of all the ways to earn money through either actual programming or just programming knowledge. I imagine it's probably a finite list as long as you stick to a reasonable level of granularity. Here's what I have so far: Trading your time for money (i.e. having a job or being a freelancer) Building your own software product (a full-fledged startup or a tiny mobile app or whatever) Giving talks at conferences and meetups Teaching students in a classroom Writing a book or blog (these are products, but non-software products) I've probably missed at least a few. What else is there? (I'm not sure whether this is an appropriate question, by the way. I think I would select the best answer based on how practical/original/interesting/numerous your suggestions are.)

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• a c++ code for scheduling tasks [closed]

  - by scheduling

  This code has no errors but then when i execute it, there is no output and the program automatically shuts down saying the program has stopped working. #include<unistd.h> #include<stdio.h> #include<stdlib.h> #include<time.h> #include<string.h> int main() { char *timetoken; char currtime[7]; char schedtime[7]; int i; struct tm *localtimeptr; strcpy(schedtime,"15:25:00"); while(6!=9) { time_t lt; sleep(1); lt = time(NULL); localtimeptr = localtime(lt); timetoken=strtok(asctime(localtimeptr)," "); for(i=1;i<5;i++) timetoken=strtok('\0'," "); if(i==3) { strcpy(currtime,timetoken); } } printf("The current time is: %s\n",currtime); printf("We are waiting for: %s\n",schedtime); if(!strcmp(currtime,schedtime)) { printf("Time to do stuff \n"); system("C:\PROJECT X"); } getch(); return 0; }

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• Dependency Injection: What point am I allowed to create a new object?

  - by Gaz_Edge

  I am refactoring a php application and I am trying to do has much dependency injection as possible. I feel like I've got a good grasp of how it works, and I can certainly see my classes becoming a lot leaner and more robust. Im refactoring so that I can inject a dependency rather than create a new object within the class, but at some point I am going to have to create some objects i.e. use the dreaded new keyword. The problem I have now run into is at what point can I actually create new objects? Its looking like I'll end up at a top level class, creating loads of new objects as there is no where else to go. This feels wrong. I've read some blogs that use factory classes to create all the objects, and then you inject the factory into other classes. You can then call the factory methods, and the factory creates the new object for you. My concern with doing this is now my factory classes are going to be a new free-for-all! I guess this may be ok as they are factory classes, but are there some rules to stick to when using factory pattern and DI, or am I going way off the mark here.

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• Reasons NOT to use JSF [closed]

  - by Vain Fellowman

  I am new to StackExchange, but I figured you would be able to help me. We're crating a new Java Enterprise application, replacing an legacy JSP solution. Due to many many changes, the UI and parts of the business logic will completely be rethought and reimplemented. Our first thought was JSF, as it is the standard in Java EE. At first I had a good impression. But now I am trying to implement a functional prototype, and have some really serious concerns about using it. First of all, it creates the worst, most cluttered invalid pseudo-HTML/CSS/JS mix I've ever seen. It violates every single rule I learned in web-development. Furthermore it throws together, what never should be so tightly coupled: Layout, Design, Logic and Communication with the server. I don't see how I would be able to extend this output comfortably, whether styling with CSS, adding UI candy (like configurable hot-keys, drag-and-drop widgets) or whatever. Secondly, it is way too complicated. Its complexity is outstanding. If you ask me, it's a poor abstraction of basic web technologies, crippled and useless in the end. What benefits do I have? None, if you think about. Hundreds of components? I see ten-thousands of HTML/CSS snippets, ten-thousands of JavaScript snippets and thousands of jQuery plug-ins in addition. It solves really many problems - we wouldn't have if we wouldn't use JSF. Or the front-controller pattern at all. And Lastly, I think we will have to start over in, say 2 years. I don't see how I can implement all of our first GUI mock-up (Besides; we have no JSF Expert in our team). Maybe we could hack it together somehow. And then there will be more. I'm sure we could hack our hack. But at some point, we'll be stuck. Due to everything above the service tier is in control of JSF. And we will have to start over. My suggestion would be to implement a REST api, using JAX-RS. Then create a HTML5/Javascript client with client side MVC. (or some flavor of MVC..) By the way; we will need the REST api anyway, as we are developing a partial Android front-end, too. I doubt, that JSF is the best solution nowadays. As the Internet is evolving, I really don't see why we should use this 'rake'. Now, what are pros/cons? How can I emphasize my point to not use JSF? What are strong points to use JSF over my suggestion?

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• Whar parts of functionality should be refactored into a directive? [AngularJS]

  - by Sprottenwels

  I am creating an application from legacy code using AngularJS. I wonder what parts of my code should be moved into a directive. For example, i had thought of moving a table which is used multiple times across the application into a directive. The tables alter from headings and size. Is it worth the effort or even a good practice to turn such things into their own directives or should i create each table in a unique way?

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• Which is more expensive multiple conditional branches or multiple relational expression in a single condition?

  - by bman

  Which is more expensive in terms of processing costs if ( x < 20 && z == "M") { // statements 3 } if ( x >= 20 && w && x <= 65) { // statements 1 } if( x >= 20 &&z != "M"){ // statements 2 } or this if ( x < 20 ) { if( z == 'M') // statements 3; } else if ( x <= 65 && w == true ) // statements 1; if ( z == 'F' ) // statements 2; }

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• Do I need to add an index on a table with one row?

  - by briddums

  I'm creating a parameter table in our database. This table will have 1 row with values that are environment specific (production, development, etc). Is there any reason why I should define an index on this table? Update This table is a parameter table which will be used to drive our job queue system. The table will be defined like this: QueuePrm LogLvl integer ShowMs boolean Restart boolean This table will only ever have 1 row. No other table in our system will reference it.

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• What do you do when a user asks for a feature you will not implement?

  - by ifvc

  What do you do when a user asks for a complex feature that you could implement, but you aren't going to do it because 1) it adds unnecessary complexity to other users 2) you are not going to do it as an option either because you don't want your settings panel to be complicated. I wrote an iOS app and there are a few users that asked me for some complex features that I can't do because of the reasons above. Most of the times I just answered them that "We will take that into consideration." Explaining them that they are in the minority that wants this feature is not going to help either. So, what do you do in the case like this?

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• Secondment promotion promises

  - by user75460

  I'm a Java developer at a large FTSE 30 company. My line manager approached me and asked if I'd like to be the teams lead developer. I was keen to accept. Initially he said I'd be acting-up for 3 months, then changed his tune and said I would be doing a 6 month secondment. During this time, he has got himself promoted and I have a new line manager. I have been very successful during this secondment and reviews have been overwhelmingly positive: both from my former line manager and current line manager. However, six months on, no lead role has been created in the organization and a new director has re-organised the structure of the team: two senior roles (senior Android and senior iOS) are going to be created. I feel a bit put-out that my secondment has amounted to nothing. I could have just done nothing and then applied for the senior role 6 months later (which I feel aren't as marketable as Lead developer). During my secondment I have basically become TA, senior developer, line manager and general go-to guy for all things (across Android and iOS). What do you think I should do, and has my company abused it's position? I feel they have offered a secondment to a role that they never really planned to create. During this time I have received no financial benefit for doing a more senior role.

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• Correct syntax in stored procedure and method using MsSqlProvider.ExecProcedure? [migrated]

  - by Dudi

  I have problem with ASP.net and database prcedure My procedure in mssql base USE [dbase] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER PROCEDURE [dbo].[top1000] @Published datetime output, @Title nvarchar(100) output, @Url nvarchar(1000) output, @Count INT output AS SET @Published = (SELECT TOP 1000 dbo.vst_download_files.dfl_date_public FROM dbo.vst_download_files ORDER BY dbo.vst_download_files.dfl_download_count DESC ) SET @Title = (SELECT TOP 1000 dbo.vst_download_files.dfl_name FROM dbo.vst_download_files ORDER BY dbo.vst_download_files.dfl_download_count DESC) SET @Url = (SELECT TOP 1000 dbo.vst_download_files.dfl_source_url FROM dbo.vst_download_files ORDER BY dbo.vst_download_files.dfl_download_count DESC) SET @Count = (SELECT TOP 1000 dbo.vst_download_files.dfl_download_count FROM dbo.vst_download_files ORDER BY dbo.vst_download_files.dfl_download_count DESC) And my proceduer in website project public static void Top1000() { List<DownloadFile> List = new List<DownloadFile>(); SqlDataReader dbReader; SqlParameter published = new SqlParameter("@Published", SqlDbType.DateTime2); published.Direction = ParameterDirection.Output; SqlParameter title = new SqlParameter("@Title", SqlDbType.NVarChar); title.Direction = ParameterDirection.Output; SqlParameter url = new SqlParameter("@Url", SqlDbType.NVarChar); url.Direction = ParameterDirection.Output; SqlParameter count = new SqlParameter("@Count", SqlDbType.Int); count.Direction = ParameterDirection.Output; SqlParameter[] parm = {published, title, count}; dbReader = MsSqlProvider.ExecProcedure("top1000", parm); try { while (dbReader.Read()) { DownloadFile df = new DownloadFile(); //df.AddDate = dbReader["dfl_date_public"]; df.Name = dbReader["dlf_name"].ToString(); df.SourceUrl = dbReader["dlf_source_url"].ToString(); df.DownloadCount = Convert.ToInt32(dbReader["dlf_download_count"]); List.Add(df); } XmlDocument top1000Xml = new XmlDocument(); XmlNode XMLNode = top1000Xml.CreateElement("products"); foreach (DownloadFile df in List) { XmlNode productNode = top1000Xml.CreateElement("product"); XmlNode publishedNode = top1000Xml.CreateElement("published"); publishedNode.InnerText = "data dodania"; XMLNode.AppendChild(publishedNode); XmlNode titleNode = top1000Xml.CreateElement("title"); titleNode.InnerText = df.Name; XMLNode.AppendChild(titleNode); } top1000Xml.AppendChild(XMLNode); top1000Xml.Save("\\pages\\test.xml"); } catch { } finally { dbReader.Close(); } } And if I made to MsSqlProvider.ExecProcedure("top1000", parm); I got String[1]: property Size has invalid size of 0. Where I shoudl look for solution? Procedure or method?

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• iPhone App that only shows a webpage. Allowed in App Store? [closed]

  - by aioobe

  I'm building a mobile web-app. One of the requirements from my client is that the user should be able to install (through App Store) a program that displays the webpage. I'm thinking of either just displaying a UIWebView with the web-page or opening the webpage in the browser. This would be my first experience with App Store, so I'd like to ask: Would I run into any troubles regarding acceptance in App Store for such "just-show-whatever-the-server-gives-me" application?

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• Software development based on a reference implementation

  - by Kanishka Dilshan

  Lets say I have library "A2" as a dependency in a project. Library "A2" is derived from library "A1" where someone has done few changes to the library "A1" 's source code. Lets say there is a new version of "A1" I want to use the new version but no modification to its sourcecode at all. I am planning to identify what are the changes done to the original library when deriving library "A2" out of it and decorate the latest version of the library with those changes. Is it a good approach to solve this? if not can someone suggest the best approach to solve this kind of problems?

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• Using UNION in a query with PHP [migrated]

  - by work

  I have an SQL query which links 3 tables using UNION: $sql ="(SELECT Drive.DriveID,Ram.Memory from Drive,Ram where Drive.DriveID = Ram.RamID) UNION (SELECT Drive.DriveID,External.Memory from Drive, External where Drive.DriveID = External.ExtID)"; Suppose I want to get Ram.Name as well. How do I do this? If I use Ram.Name in the first SELECT statement it would not produce the correct result. Any method for tackling this? I want to do it using UNION.

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• Array of pointers in C++.

  - by Theorem

  I am not understanding the output of this , #include <iostream> using namespace std; // pointers and arrays char ch1 = 'a' , ch2= 'b'; char ch3[6] = {'c', 'd', 'e', 'f', 'g' , 'h'}; char *ptr[3]; int main () { ptr[0] = &ch1 ; ptr[2] = ch3; cout << &ch1 << endl; } The out put is abcdefgh . isn't &ch1 supposed to give the address of ch1 ? I cannot make sense why the output should be abcdefgh.

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• web service host [closed]

  - by elyashiv

  I'm looking for a place to host a cloud service that well manage data from a App I'm developing. The service I need doesn't have any UI (accessed completely through the App software), and well work on only small requests - but hopefully quite a lot of them. I'm looking for something free that well give me the best - in storage and request handling. No specific language, but preferably one of the following: Python, C#, Java. (in this order).

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• Plagued by multithreaded bugs

  - by koncurrency

  On my new team that I manage, the majority of our code is platform, TCP socket, and http networking code. All C++. Most of it originated from other developers that have left the team. The current developers on the team are very smart, but mostly junior in terms of experience. Our biggest problem: multi-threaded concurrency bugs. Most of our class libraries are written to be asynchronous by use of some thread pool classes. Methods on the class libraries often enqueue long running taks onto the thread pool from one thread and then the callback methods of that class get invoked on a different thread. As a result, we have a lot of edge case bugs involving incorrect threading assumptions. This results in subtle bugs that go beyond just having critical sections and locks to guard against concurrency issues. What makes these problems even harder is that the attempts to fix are often incorrect. Some mistakes I've observed the team attempting (or within the legacy code itself) includes something like the following: Common mistake #1 - Fixing concurrency issue by just put a lock around the shared data, but forgetting about what happens when methods don't get called in an expected order. Here's a very simple example: void Foo::OnHttpRequestComplete(statuscode status) { m_pBar->DoSomethingImportant(status); } void Foo::Shutdown() { m_pBar->Cleanup(); delete m_pBar; m_pBar=nullptr; } So now we have a bug in which Shutdown could get called while OnHttpNetworkRequestComplete is occuring on. A tester finds the bug, captures the crash dump, and assigns the bug to a developer. He in turn fixes the bug like this. void Foo::OnHttpRequestComplete(statuscode status) { AutoLock lock(m_cs); m_pBar->DoSomethingImportant(status); } void Foo::Shutdown() { AutoLock lock(m_cs); m_pBar->Cleanup(); delete m_pBar; m_pBar=nullptr; } The above fix looks good until you realize there's an even more subtle edge case. What happens if Shutdown gets called before OnHttpRequestComplete gets called back? The real world examples my team has are even more complex, and the edge cases are even harder to spot during the code review process. Common Mistake #2 - fixing deadlock issues by blindly exiting the lock, wait for the other thread to finish, then re-enter the lock - but without handling the case that the object just got updated by the other thread! Common Mistake #3 - Even though the objects are reference counted, the shutdown sequence "releases" it's pointer. But forgets to wait for the thread that is still running to release it's instance. As such, components are shutdown cleanly, then spurious or late callbacks are invoked on an object in an state not expecting any more calls. There are other edge cases, but the bottom line is this: Multithreaded programming is just plain hard, even for smart people. As I catch these mistakes, I spend time discussing the errors with each developer on developing a more appropriate fix. But I suspect they are often confused on how to solve each issue because of the enormous amount of legacy code that the "right" fix will involve touching. We're going to be shipping soon, and I'm sure the patches we're applying will hold for the upcoming release. Afterwards, we're going to have some time to improve the code base and refactor where needed. We won't have time to just re-write everything. And the majority of the code isn't all that bad. But I'm looking to refactor code such that threading issues can be avoided altogether. One approach I am considering is this. For each significant platform feature, have a dedicated single thread where all events and network callbacks get marshalled onto. Similar to COM apartment threading in Windows with use of a message loop. Long blocking operations could still get dispatched to a work pool thread, but the completion callback is invoked on on the component's thread. Components could possibly even share the same thread. Then all the class libraries running inside the thread can be written under the assumption of a single threaded world. Before I go down that path, I am also very interested if there are other standard techniques or design patterns for dealing with multithreaded issues. And I have to emphasize - something beyond a book that describes the basics of mutexes and semaphores. What do you think? I am also interested in any other approaches to take towards a refactoring process. Including any of the following: Literature or papers on design patterns around threads. Something beyond an introduction to mutexes and semaphores. We don't need massive parallelism either, just ways to design an object model so as to handle asynchronous events from other threads correctly. Ways to diagram the threading of various components, so that it will be easy to study and evolve solutions for. (That is, a UML equivalent for discussing threads across objects and classes) Educating your development team on the issues with multithreaded code. What would you do?

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• When to open source a project under development? [closed]

  - by QuasarDonkey

  Possible Duplicate: Is it OK to push my code to GitHub while it is still in early development? I've been working on a hobby project for a few months now; it's clocking in at over 15000 source lines of code. A number of people have expressed interest in joining development, and I have full intentions of going open source, since it would not be feasible for me to complete the project alone. I'm just not sure when to open-source it. For context, I've notice many successful open source projects, such as the Linux kernel, had considerable work done before they were open-sourced. In my case, I'd been planning on open-sourcing it after I complete all the underlying libraries and overall architecture. Is this a mistake; should I just release it right now? I'm worried that since certain critical underlying components haven't been finalized, if people build a large codebase around them, it will be very difficult to change or fix things later. On the other hand, it's a very large project that will require multiple developers to complete in a reasonable time. So when is the right time during development to go open source? Preferably, I'd like to hear from some folks who have started their own projects.

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• What programming Langauge Would you learn to Reengineer USB Devices? [closed]

  - by user70113

  Currently Work in IT support and am retraining in electrical engineering / electronics, I am also interested in Reverse Engineering which language would be best for Hardware RE, I have seen a few sources say C, C++ and Python? I am not familiar with Linux, but installed ubuntu to learn with. I am not a programmer far from it, but I can understand enough basic VB,Java and PHP to edit it for simple things. One of my immediate projects would be to learn to reverse engineer USB devices and write my own low level drivers, I know there are porting kits, but I really want to know it from the ground up. Thanks for any advise folks Most Appreciated.

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• What is a suitable way to correct this program? [closed]

  - by lamwaiman1988

  Possible Duplicate: How to deal with huge changes to a data specification? As described in this question, I need to modified a 4800 line c program to fulfill the new functional specification. However I have no idea of HOW to do it. Background: There is a updated version of a header file which the program depends on. I've speculated the changes and found that at least 30 critical changes are present. With the new header file, the c program cannot even compile. The error is too much that the compile said "too much error" and don't list every one. Unlike normal modification which can be easily test, this has no way to test without overcoming the 30 critical changes. For example, there would be no point to run the modified program with the old header file. On the other hand, with the new header file, the program can't run until I've covered every one of the 30 critical changes scattered in the new header file so that I can't even verify the correctness of each modification until there is no more compilation error. Do you have any idea to deal with this situation?

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• Is it a bad practice to quit a company only to begin as a consultant? [closed]

  - by niwi

  Like the title says; is it a bad practice to quit a company after a few years, only to begin as a consultant for the same 'customer'? I've been lucky enough to come in to a company in the oil business from the beginning, developing software for relatively new and unused technology. Long before I even got this job, I've wanted to start my own consulting firm. Is it morally wrong of me to quit my job after a few years, only to hire myself out as a 'specialist' or consultant on our systems?

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• Is `catch(...) { throw; }` a bad practice?

  - by ereOn

  While I agree that catching ... without rethrowing is indeed wrong, I however believe that using constructs like this: try { // Stuff } catch (...) { // Some cleanup throw; } Is acceptable in cases where RAII is not applicable. (Please, don't ask... not everybody in my company likes object-oriented programming and RAII is often seen as "useless school stuff"...) My coworkers says that you should always know what exceptions are to be thrown and that you can always use constructs like: try { // Stuff } catch (exception_type1&) { // Some cleanup throw; } catch (exception_type2&) { // Some cleanup throw; } catch (exception_type3&) { // Some cleanup throw; } Is there a well admited good practice regarding these situations?

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• GNU GPL LICENSE

  - by user577616

  I develop an android application and in my app I use a libary (jar) that I download from the internet. This jar is open-source under the "GNU General Public License v2". I tried to read the text of the license but had difficulty understanding it. My question is: can I use this libary without changing nothing in the jar in a commercial application? I will be making profit from selling my app which uses this GPL-ed .jar file. If possible, I would like to avoid converting my application to open-source.

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• type of application form in Visual Studio 2013 [on hold]

  - by Lyhour Chhay

  I wanna ask all of you about the type of application form which can developed by using Visual Studio . I know only 2 , there are windows application form and web application form . So i wanna know more because my teacher told me that there 4 more application forms . I try to search on Google or Wikipedia but still can't find the best answer for me . I hope that you all of you can help me. Best Regard !! thx in advance.

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• Would it be possible to make an android app like this?

  - by ThisBetterWork

  I'm fairly new to android development and I'm not sure if the functionality I have in mind for my next project is actually feasible. I wanted to make a simple study guide app...when a user is browsing the web on their phone and they come across information they want to save to their study guide they would be able to highlight the sentence,long-click the highlighted text, and see an option to add it to their study guide(a pop-up list would appear). there would be more functionality than just this, for instance with-in the app you could create different study guide topics (biology,math, English..ect). But in general is it possible to have an app that is accessible by long-clicking when your browsing the web (as opposed to opening the App manually in order to use it.) -- If not, could I make it so you can open a browser within the app to do what I've described? This is going to be a school project so I don't care if it's totally original, I just want to make something simple and practical for practice. -- Thanks in advanced to anyone who helps!! :D

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• Moving soon, fiancee has new job: how to transition?

  - by Anonymous

  I've found myself in a sort of conundrum lately and I figured Stack Overflow would be the place to ask this question. I normally post under my personal account here, but I'm writing in anonymously this time so as to make sure my co-workers don't find out too early that I'll be leaving them behind in a few months. My fiancee just landed a great software development job at a very large, stable company. She'll be starting after she graduates and just after we get married (May to June-ish). Her compensation and benefits package will be more than enough to take care of both of us, so I agreed to step down from my current position so we could move to a larger city with more opportunities. I'll probably take a few weeks off to decompress, but I don't want to stay unemployed very long. Since there will be less pressure on me to bring home a second income though, we're not as adverse to risk as we normally would be. I'm currently debating whether to eventually seek employment at a small company, a larger company, do contract work, or do something else entirely. I haven't been in the software development business long (2-3 years plus some small personal projects), but I've seen what things can be like at a startup (my first job) and at a more established, mid-sized business (my current job). Most importantly what I'm looking for out of a new employment opportunity is challenge and variety. Does this situation describe anyone on SO? If so, what did you do/what are you doing? How is it working out for you? Programming is a pleasure as well as a career skill for me, so I want to make sure it stays that way. Thanks to all in advance for any responses.

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