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  • How to keep a team well-trained?

    - by PierrOz
    Hi dear fellows, I'm currently mentoring a small team of 4 junior dev in small software company. They are very smart and often achieve their tasks with a high-quality job but I'm sure they still can do better - actually I have exactly the same feeling for myself :) -. Besides some of them are more "junior" than other. So I would like to find of a funny way to improve their CS skills (design, coding, testing, algorithmic...) in addition to the experience they acquire in their daily work. For instance, I was thinking of setting up weekly sessions, not longer than 2 hours, where we could get together to work on challenging CS exercises. A bit like a coding dojo. I'm sure the team would enjoy that but is it really a good idea? Would it be efficient in a professional context? They already spend all their week to code so how should I organize that in order for them to get some benefits? Any feedback welcome !

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  • Which tasks should a beginner, intermediate and advanced rails developer be able to complete?

    - by raouldeveloper
    I have been programming ROR for about a year now, and I think I am ready to start working on a project for someone else. The problem is that job postings for contractors don't really tell you which specific tasks you should be able to do at different experience levels (in rails and other technologies), so I don't know where to pitch myself. I think I am somewhere between junior and mid-level, but who knows? So my question is: Which actual tasks should an junior programmer be able to do at, say, $35 an hour, which actual tasks should an intermediate programmer be able to do at, lets say, $75 an hour, and which actual tasks should an advanced programmer be able to do at, oh say, $140 an hour? One or two examples should suffice.

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  • Hibernate - how to delete bidirectional many-to-many association

    - by slomir
    Problem: I have many-to-many association between two entities A and B. I set A entity as an owner of their relationship(inverse=true is on A's collection in b.hbm.xml). When i delete an A entity, corresponding records in join table are deleted. When i delete an B entity, corresponding records in join table are not deleted (integrity violation exception). -- Let's consider some very simple example: class A{ Set<B> bset=new HashSet<B>(); //... } class B{ Set<A> aset=new HashSet<A>(); //... } File a.hbm.xml [m-to-m mappings only]: <set name="bset" table="AB"> <key name="a_id"/> <many-to-many column="b_id" class="B"/> </set> File b.hbm.xml [m-to-m mappings only]: <set name="aset" table="AB" inverse="true"> <key name="b_id"/> <many-to-many column="a_id" class="A"/> </set> Database relations: A(id,...) B(id,...) AB(a_id,b_id) Suppose that we have some records in AB joint table. For example: AB = {(1,1),(1,2)} where AB= { (a_id , b_id) | ... ... } -- Situation 1 - works probably because A is owner of AB relationship: A a=aDao.read(1); //read A entity with id=1 aDao.delete(a); //delete 'a' entity and both relations with B-entities Situation 2 - doesn't work: B b=bDao.read(1); //read B entity with id=1 bDao.delete(b); //foreign key integrity violation On the one hand, this is somehow logical to me, because the A entity is responsible for his relation with B. But, on the other hand, it is not logical or at least it is not orm-like solution that I have to explicitly delete all records in join table where concrete B entity appears, and then to delete the B entity, as I show in situation 3: Situation 3 - works, but it is not 'elegant': B b=bDao.read(1); Set<A> aset=b.getA(); //get set with A entities Iterator i=aset.iterator(); //while removes 'b' from all related A entities //while breaks relationships on A-side of relation (A is owner) while(i.hasNext()){ A a=i.next(); a.bset.remove(b); //remove entity 'b' from related 'a' entity aDao.update(a); //key point!!! this line breaks relation in database } bDao.delete(b); //'b' is deleted because there is no related A-entities -- So, my question: is there any more convenient way to delete no-owner entity (B in my example) in bidirectional many-to-many association and all of his many-to-many relations from joint table?

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  • Is there any good Corporate Instant Messenger?

    - by Junior Mayhé
    I asked Skype team if they have a corporate instant messenger, but they didn't give me a straight answer. My company wants employees to send message and files to each other, just like Skype or Windows Live Messenger. The bottom line here is: they don't want people to contact internet users. Only employees would be possible contacts. Is there any product like this? I think would be necessary a corporate server for this solution?

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  • Google Chrome doesn't respond user actions correctly

    - by Carlos A. Junior
    Recently I've changed my OS to Ubuntu 12.04 (Cinnamon, 64 bits) from Mint 13 (KDE, 64 bits) and one same bug still appears on new installation. The Google Chrome it seems that don't refresh (repaint) page based on my interactions. Example: When i'm try comment an Youtube vídeo, when i click on textarea, o cursor don't appear inside of textarea, BUT, when/if i change to another tab and return the cursor appears...OK... If i start write some text...according i'm typing the chars don't appers...again if i change to another tab and return the typed text appears on textarea. Other cases that this bug appears: Modal boxes link...don't show the modal; Forms inside modal boxes don't show typed chars; The common Discus comment plugin don't work when focused; I don't have any idea of reason of this bug. (video driver, window manager, Chrome bug ?, i don't know) Any idea to solve this ? Additional informations: Google Chrome 22.0.1229.79 (Official Build 158531) OS Linux WebKit 537.4 (@129177) JavaScript V8 3.12.19.11 Flash 11.3.31.331 User Agent Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.79 Safari/537.4 Command Line /opt/google/chrome/google-chrome --flag-switches-begin --flag-switches-end Executable Path /opt/google/chrome/google-chrome Profile Path /home/carlos/.config/google-chrome/Default Kernel version: 3.2.0-31-generic-pae Ubuntu 12.04 Best regards.

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  • Windows 8 - When AC Power is disconnected, atibtmon.exe throws a Runtime error

    - by Junior Mayhé
    The installer is not working for my ATI mobility Radeon HD 3670 on Dell XPS Studio 16 using Windows 8 PRO 64 bits. Here are the screenshots of my ATI Radeon configuration: Hardware configuration Software configuration And here is the problem on Windows 8: everytime I disconnect the AC power cord, atibtmon.exe throws a runtime error as follows What could I do to avoid this error? I have installed the legacy driver http://support.amd.com/us/kbarticles/Pages/catalystlegacywin8.aspx but this installer fails (when trying to install the driver).

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  • Can't find newer DLINK Router DIR-400 firmware

    - by Junior Mayhé
    If you're here, it means you also have a Dlink 400 router. I asked DLINK but they didn't answer my question. I asked DLINK support again, but this time no answer (2 weeks later). In DLINK FTP site there is no firmware for DIR-400. Past year, Googling around Russia, I found a FIRMWARE_DIR400_v1.02B03.bin. But I am trying to figure out if is there any update, a 1.03 version or superior. Can anyone tell me why DLINK doesn't show this firmware update on their site, and if this DIR-450 is compatible with mine?

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  • How to configure custom error page in Plesk 9.3 for non existing folder?

    - by Junior Mayhé
    I'm trying to configure Plesk in order to show website visitors a custom error html. The current hosted site is an ASP.NET site. This site shows its custom errors on error403.aspx and error404.aspx files. Now to comply with plesk, I've created error_docs with required files like forbidden.html, etc... When user try to navigate http://mysite.com/a_missing_page.aspx, the visitor is redirected to error404.aspx correctly. But when user try to navigate to a non existent directory http://mysite.com/a_missing_folder/ the site takes me to IIS 404 regular page. Plesk has Custom error documents activated on Web hosting settings. ASP.NET Error pages defined in web.config are showing fine. But it seems plesk wont show its custom html error documents. The bottom line here is about setting up a custom error page to a directory. Is it possible to do this using Plesk or do I have to change it manually on IIS?

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  • How to remove registration information of VS 2010 from a computer without reinstall Windows

    - by Ronaldo Junior
    I want to remove visual studio 2010 from a computer i am selling but even after uninstall, it looks like my product key is still around - if you re-install it it will use the product key... How do I remove that registration info from the computer as I don't want the new owner of the computer to use my product key. And I don't want to have to uninstall Windows. PS.: The question was asked on StackOverflow but I was advised to put the question here for being more related.

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  • Is there any good Corporate Instant Messenger?

    - by Junior Mayhé
    Hi Guys I asked Skype team if they have a corporate instant messenger, but they didn't give me a straight answer. My company wants employees to send message and files to each other, just like Skype or Windows Live Messenger. The bottom line here is: they don't want people to contact internet users. Only employees would be possible contacts. Is there any product like this? I think would be necessary a corporate server for this solution?

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  • What brand of wireless router would be compatible with many broadband modems and easy to use?

    - by Junior Mayhé
    Good afternoon I'm having too many intermittent problems with my DLINK DIR 400 router: Wireless connection is lost with no reason. Perhaps the current router is incompatible with this Scientific Atlanta cable modem DPC 2100R2. Scientific Atlanta is a Cisco company, but I'm really worried about this combination DLink - Cisco. Could anyone recommend me a good wireless router for Windows Vista / Windows 7? Thank you

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  • What brand of wireless router would be compatible with many broadband modems and easy to use?

    - by Junior Mayhé
    Good afternoon I'm having too many intermittent problems with my DLINK DIR 400 router: Wireless connection is lost with no reason. Perhaps the current router is incompatible with this Scientific Atlanta cable modem DPC 2100R2. Scientific Atlanta is a Cisco company, but I'm really worried about this combination DLink - Cisco. Could anyone recommend me a good wireless router for Windows Vista / Windows 7? Thank you

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  • Production Access Denied! Who caused this rule anyways?

    - by Matt Watson
    One of the biggest challenges for most developers is getting access to production servers. In smaller dev teams of less than about 5 people everyone usually has access. Then you hire developer #6, he messes something up in production... and now nobody has access. That is how it always starts in small dev teams. I think just about every rule of life there is gets created this way. One person messes it up for the rest of us. Rules are then put in place to try and prevent it from happening again.Breaking the rules is in our nature. In this example it is for good cause and a necessity to support our applications and troubleshoot problems as they arise. So how do developers typically break the rules? Some create their own method to collect log files off servers so they can see them. Expensive log management programs can collect log files, but log files alone are not enough. Centralizing where important errors are logged to is common. Some lucky developers are given production server access by the IT operations team out of necessity. Wait. That's not fair to all developers and knowingly breaks the company rule!  When customers complain or the system is down, the rules go out the window. Commonly lead developers get production access because they are ultimately responsible for supporting the application and may be the only person who knows how to fix it. The problem with only giving lead developers production access is it doesn't scale from a support standpoint. Those key employees become the go to people to help solve application problems, but they also become a bottleneck. They end up spending up to half of their time every day helping resolve application defects, performance problems, or whatever the fire of the day is. This actually the last thing you want your lead developers doing. They should be working on something more strategic like major enhancements to the product. Having production access can actually be a curse if you are the guy stuck hunting down log files all day. Application defects are good tasks for junior developers. They can usually handle figuring out simple application problems. But nothing is worse than being a junior developer who can't figure out those problems and the back log of them grows and grows. Some of them require production server access to verify a deployment was done correctly, verify config settings, view log files, or maybe just restart an application. Since the junior developers don't have access, they end up bugging the developers who do have access or they track down a system admin to help. It can take hours or days to see server information that would take seconds or minutes if they had access of their own. It is very frustrating to the developer trying to solve the problem, the system admin being forced to help, and most importantly your customers who are not happy about the situation. This process is terribly inefficient. Production database access is also important for solving application problems, but presents a lot of risk if developers are given access. They could see data they shouldn't.  They could write queries on accident to update data, delete data, or merely select every record from every table and bring your database to its knees. Since most of the application we create are data driven, it can be very difficult to track down application bugs without access to the production databases.Besides it being against the rule, why don't all developers have access? Most of the time it comes down to security, change of control, lack of training, and other valid reasons. Developers have been known to tinker with different settings to try and solve a problem and in the process forget what they changed and made the problem worse. So it is a double edge sword. Don't give them access and fixing bugs is more difficult, or give them access and risk having more bugs or major outages being created!Matt WatsonFounder, CEOStackifyAgile Support for Agile Developers

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  • Visual Studio 2010 is asking to convert RDLC created on VS2008 to RDLC 2008 format?

    - by Junior Mayhé
    I've created my project on Visual Studio 2008, as well RDLC files on it. But now, when I open the solution on Visual Studio 2010 and want to open RDLC file, it's showing me a warning. That's a little funny. The report was created on VS2008 and VS2010 is asking to convert to 2008 format. Perhaps there was a problem on my VS2008 installation that created RDLC files using some ancient format (2005??!) The problem is, when you confirm with Ok button, do some design ajustments and run the app, it throws an error on 'Main report': ex.InnerException {"The definition of the report 'Main Report' is invalid."} [Microsoft.Reporting.DefinitionInvalidException]: {"The definition of the report 'Main Report' is invalid."} Data: {System.Collections.ListDictionaryInternal} HelpLink: null InnerException: {"The report definition is not valid. Details: The report definition has an invalid target namespace 'http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition' which cannot be upgraded."} Message: "The definition of the report 'Main Report' is invalid." Source: "Microsoft.ReportViewer.Common" StackTrace: " at Microsoft.Reporting.ReportCompiler.CompileReport(CatalogItemContext context, Byte[] reportDefinition, Boolean generateExpressionHostWithRefusedPermissions, ReportSnapshotBase& snapshot)\r\n at Microsoft.Reporting.StandalonePreviewStore.StoredReport.CompileReport()\r\n at Microsoft.Reporting.StandalonePreviewStore.StoredReport.get_Snapshot()\r\n at Microsoft.Reporting.StandalonePreviewStore.GetCompiledReport(CatalogItemContext context, Boolean rebuild, ReportSnapshotBase& snapshot)\r\n at Microsoft.Reporting.LocalService.GetCompiledReport(CatalogItemContext itemContext, Boolean rebuild, ReportSnapshotBase& snapshot)\r\n at Microsoft.Reporting.LocalService.CompileReport(CatalogItemContext itemContext, Boolean rebuild)\r\n at Microsoft.Reporting.WinForms.LocalReport.CompileReport()" TargetSite: {Microsoft.ReportingServices.ReportProcessing.PublishingResult CompileReport(Microsoft.ReportingServices.Diagnostics.CatalogItemContext, Byte[], Boolean, Microsoft.ReportingServices.Library.ReportSnapshotBase ByRef)}

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  • Delphi app manifest file problems under WinXP and Win7

    - by Ronaldo Junior
    My last question "List service and services status under Win-7" made me start working on a solution that gives my app the admin privileges under Windows Vista onward based on a .manifest file. I was not sure about continue the previous question with this matter since they are not the same so here is another question: My app now works fine under Win 7 whether or not I run it "as admin" because of the manifest file. My manifest file is as follow: <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> <assemblyIdentity version="1.6.0.5" processorArchitecture="X86" name="ServiceMonitorPro" type="win32"/> <description publisher="Powershield Ltd" product="Powershield Service Monitor">Powershield Service Monitor</description> <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2"> <security> <requestedPrivileges> <requestedExecutionLevel level="requireAdministrator" uiAccess="false"/> </requestedPrivileges> </security> </trustInfo> </assembly> When the application runs on windows 7 or Vista, the UAC comes with a dialog like this: How can I replace the "unknow" publisher? The other and bigest problem is, even thou the app runs with no problem under Win7 or Vista, under WinXP it is now crashing with the message: "This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem." Another thing I would like to add: If I add reference (uses clause) to XPMan the app works fine on WinXP but then it my .manifest file makes no diference under Vista or Win7.

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  • RIA IDE - Visual Studio 2010, FlashBuilder and ExtJS Designer

    - by Ronaldo Junior
    I've been playing around with Flex4 - the trial version - and is really quite good in terms of layout development - since I'm starting a new RIA project and we still on the "what platform" phase I better listen what you guys have to say. In Flashbuilder I can do the layout and mix with the back end script code really fast - the version 4 give me the power to even test the functionality of the server side script, etc and since I can use Fllashbuilder as a Eclipse plugin, I end up with only one IDE. On the other hand, with Silverlight, it looks like if I want a "drag and drop" approach to build my interface I would need Expression Blend and Visual Studio (full or express version). Is there a way out that? I mean, Visual Studio 2010 will come with some sort of Silverlight component palet so that you can easily drag and drop it on your interface like you would do with WPF, etc? I don't wanna use Blend - is way too much for what we need - taking the "coding XAML" by hand is out of question as well. A third approach is to use ExtJS - they have a new designer IDE that looks promising.

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  • Do WPF ComboBox SelectedIndex and SelectedValue have different behavior on SelectionChanged event?

    - by Junior Mayhé
    Hello guys I got this cbxJobPosition_SelectionChanged firing as expected. The problem is when a external method tries to set cbxJobPosition. cbxJobPosition is databinded with a list of objects of type JobPosition: JobPositionID: 1, JobPositionName: Manager JobPositionID: 2, JobPositionName: Employee JobPositionID: 3, JobPositionName: Third party Here's the XAML: <ComboBox Cursor="Hand" DataContext="{Binding}" ItemsSource="{Binding}" FontSize="13" Name="cbxJobPosition" SelectedValuePath="JobPositionID" DisplayMemberPath="JobPositionName" SelectedIndex="0" Width="233" Height="23" SelectionChanged="cbxJobPosition_SelectionChanged" /> On UserControl_Loaded method, it reads from database the list of jobs and try to set the specific job position "Third party": //calls cbxJobPosition_SelectionChanged and passes the correct SelectedValue within cbxJobPosition.SelectedIndex = 3; //calls cbxJobPosition_SelectionChanged and but won't pass the correct SelectedValue within cbxJobPosition.SelectedValue = "3"; As you can notice, when the processing is automatically redirected to cbxJobPosition_SelectionChanged, the SelectedValue attribute will have different values for each statement above when you're debugging within cbxJobPosition_SelectionChanged event. Does anyone know if this difference is expected, am I missing something or it could be a bug?

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  • When to use Shift operators << >> in C# ?

    - by Junior Mayhé
    I was studying shift operators in C#, trying to find out when to use them in my code. I found an answer but for Java, you could: a) Make faster integer multiplication and division operations: *4839534 * 4* can be done like this: 4839534 << 2 or 543894 / 2 can be done like this: 543894 1 Shift operations much more faster than multiplication for most of processors. b) Reassembling byte streams to int values c) For accelerating operations with graphics since Red, Green and Blue colors coded by separate bytes. d) Packing small numbers into one single long... For b, c and d I can't imagine here a real sample. Does anyone know if we can accomplish all these items in C#? Is there more practical use for shift operators in C#?

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  • PHP Simple DOM Parser

    - by Junior Coder
    Hi guys I'm using this wonderful class here to do a bit of code embed filtering: http://simplehtmldom.sourceforge.net/. It extends the PHP DOM document class. Pretty much what I am doing is parsing a string through this class that contains embed code, i grab the unique bits of information eg id, width, height send through a handler function which inserts the id, width, height etc into my predefined "safe" template and reinsert my safe template in the place of the embed code the user has put in. May seem a backward way of doing it but it's the way it has to be done :) All of that works fine. Problem is when there is more than just embed code contained in the string, as I can't just replace the embed code i can only replace the entire string which wipes the rest of the tags etc string. For example if there were a p tag that would be wiped. So my question is how using this class can i just replace the certain part of the string? Spent the last few days trying to work this out and need some more input. It appears the class can do this so i'm stumped. Here's a basic version of what i have so far :) // load the class $html = new simple_html_dom(); // load the entire string containing everything user entered here $return = $html->load($string); // check for embed tags if($html->find('embed') == true { foreach($html->find('embed') as $element) { // send it off to the function which returns a new safe embed code $element = create_new_embed($parameters); // this is where i somehow i need to save the changes and send it back to $return } } Any input would be gratefully appreciated. If i have explained my problem well enough please let me know :)

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  • Check firebird databases present

    - by Ronaldo Junior
    Our software installer install firebird if it is not present on the system and, as we are pursuing Win certificate the uninstaller should remove it but, we want to make sure that even if it was the installer that put it there, if any new software is using it now with a new database, we would not remove it (Firebird). The question is: Is it possible to query the server and ask what are the databases running on it? This is it so that we can decide, automatically if we can remove the database or not. A few extra info: Our installer is Innosetup and it does a good job already - we just trying to make it smarter because of the "Developed by" or "Compatible with" windows logo.

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