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  • recommend a server side technology for gwt (beginner)

    - by user486503
    hi all ! I am developing a gwt project and am looking for an appropriate server side technology. it should support be open source and support user login (and not using openID...) with password recovery etc it seems that the de-facto standard would be spring + hibernate. however, I am unfamiliar with neither of them and understand that the learning curve (especially for spring) is very high. gwt was quite easy to learn using GOOG's excellent online tutorials but the spring equivalent seem to impose lots of configuration files and deeper understanding of its internals. so I am looking for a simpler server side technology to deploy my gwt app. I am definitely prepared to learn a new framework if necessary but not something that would take me 2 months just to understand the fundamentals... any ideas...?

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  • Idea for doing almost same work in both catch & finally(C#3.0)

    - by Newbie
    I have a requirement. I am processing some files and after the processing are done I am archiving those files into an archive folder with timestamp appended. The file archiving and putting time stamp portion I am doing in the Finally block. Now a new requirement has come where I need to mail if something wrong goes in the original files and then I need to archive the same. Now this piece of code I need to handle in the catch block. But if I write the code entirely in the catch block, then it will fire only if there is an exception; otherwise not. So basically I am writing the same pice of code in both the catch and finally block. What is the standard and recommended approach you people think will be better in this case? I am using C#3.0 Thanks.

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  • SVN: change a past revision and have the change in current

    - by John Isaacks
    ok say I am on revision 4. I check it out, make some change and commit it. I am not on revision 5. I check it out again, am making some changes, but I am informed that there was a typo from revision 5 that needs to be changed right away. I don't want to fix it in my current working copy because I am in the middle of something and it wont be ready to commit yet. But I don't want to revert back to revision 5 and loose all my work. what I want to do is go back to revision 5, make the small change, commit it. And ALSO have that change made to my current working copy as well. I hope that makes sense. Is there a way to do that?

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  • concurrent doubly-linked list (1 writer, n-readers)

    - by Arne
    Hi guys, I am back in the field of programming for my Diploma-thesis now and stumbled over the following issue: I need to implement a thread-safe doubly-linked list for one thread writing the list at any position (delete, insert, mutate node data) and one to many threads traversing and reading the list. I am well aware that mutexes can be used to serialize access to the list, still I presume that a naive lock around any write operation will be less than optimal. I am wondering whether there are better variants. (I am well aware that 'optimal' has not much of a practical meaning as long as no exact measure/profiling are available but this is an academic thesis after all..) I am very gratefull for code-samples as well as references to academic granted these have at least a tiny bit of practical relevance. Thanks at lot

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  • Debugging ASP.NET in VS

    - by negligible
    A lot of what I'm doing at the moment is figuring out other peoples code and adding or adapting functions, so currently I am debugging more than I am writing code of my own. I'm still new to this, Junior Developer, and I am always finding new ways to improve what I am doing. For example I recently found This Guide which had some excellent tips, such as overriding the ToString() method in your classes so children are readable from their parents. So I am looking for any other tips or tricks to make my debugging more efficient, as I recognise it as a big part of programming, that you more experienced programmers may have picked up or found. Anything appreciated, I can read websites just fine so no need to explain it yourself if you have a good link!

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  • What is the differnce between these two types using jquery

    - by kumar
    hi, $('tr td:first-child').click(function() { var foobar = $(this).text(); $("#showgrid").load('/Product/List/Item?id=' + foobar); }); when I am seding foobar value like this in the Actionresult method I am getting string id value perfectly but I am not able to display the grid? but intresting thing is when I am seding like this $("#showgrid").load('/Product/List/Item?id=' + "12345"); then I am able to display the grid.. foobar result is same 12345.. what is the differnt between these two types? can any body help me out.. thanks

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  • waht is the differnce between these two types using jquery

    - by kumar
    hi, $('tr td:first-child').click(function() { var foobar = $(this).text(); $("#showgrid").load('/Product/List/Item?id=' + foobar); }); when I am seding foobar value like this in the Actionresult method I am getting string id value perfectly but I am not able to display the grid? but intresting thing is when I am seding like this $("#showgrid").load('/Product/List/Item?id=' + "12345"); then I am able to display the grid.. foobar result is same 12345.. what is the differnt between these two types? can any body help me out.. thanks

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  • Facebook: Requires a valid user is specified (either via the session or via the API parameter for specifying the user.

    - by Stoic
    Hey Everyone, I am receiving this error: Requires a valid user is specified (either via the session or via the API parameter for specifying the user. when I am trying to utilize Facebook's FB.api with JS SDK for method: users.hasAppPermission I am constantly receiving this error, for any uid I pass on. Here is my code: $(document).ready(function() { var perms_requested = <?php echo PERMS;?>; var user_id = <?=$user_id;?>; $('#perms_check').html(loading); ask_for_perms(perms_requested, function(data) { $('#perms_check').html(data); }); function ask_for_perms(perms_requested,cb) { var request = []; $.each(perms_requested,function(i,permission) { FB.api({ method: 'users.hasAppPermission', ext_perm: permission, uid: user_id }, function(response) { if (response == 0) request.push(permission); if (i == perms_requested.length - 1) cb(request.join(', ')); }); }); } }); Also, I am utilizing nearly the same code in some other part of the same application, and I am getting fine results with that.

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  • F# working with while loop

    - by mamu
    I have a datareader and i want to return collection of rows from it, after reading books for like a day i am not able to find out best way to do it in f#. I can do it normal C# way in F# but that is not why i am using f# Here is what i am trying to achieve let values = while reader.Read() do yield reader.GetString(0), reader.GetInt64(1) Above is how i am trying to do all values get collected into values, which could be dictinary or tuples or any collection yield can't be used in while loop but that is what i am trying to do What could be the best way to achieve this

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  • Creating a row of Three Boxes Seperated

    - by Frank G.
    I am new to css and I have a menu bar that I am working on however I am having a problem with one of the menu ("LINKS") items. If you roll over the Links menu item your notice I have three boxes there that I am trying to separate into there own area. Right now they are over lapping each other. Could you please tell me what I am doing wrong? I have tried margin-left and padding-left and I find that they either move the box further to the right or widen the box more. But they don't space them out. You can find the menu bar here: http://jsfiddle.net/vtjPR/

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  • how do I get the SDK version for an app running on the simulator programmatically?

    - by newbiez
    I am trying to get the version/build that is running on the simulator via code. Basically I am checking various features of my app using the simulator, and want to switch code paths on and off based on which SDK do I have set as current, instead than doing it by hand every time (my testing machine has different version of the SDK on it and I switch the current for testing purposes between 4.1 and 5.1). So the idea is that when the app launch on the simulator, I can read the build of the SDK and know trough matching (I have a function that does the matching and turn on and off the features) if I should run a specific code path or not. I know how to figure out if I am running on the sim or on a device, but cannot find references about how to get the version of the SDK via code, so I am basically stuck. Is there any function that I can call and that returns me the build or version of the currently installed iOS, while I am running the app on the simulator?

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  • Android app display different blocks of text using the same views.

    - by user465131
    I am sure there is a better way to do what I am doing in my apps. The current one I am trying to improve is a list of military cadences. The way I am doing it now is by loading html files in a web view. What I would like to be able to do is have one view set up and just be able to add the text portion of what I would be displaying with the html file. What would be the best method. I know this is probably a pretty simple thing to do with a sting or array but I am at the very beginner level and would need to be pointed in the right direction to do it.

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  • How do I create a certain control using Windows Forms in Visual C++?

    - by Dalze
    I am new to using Windows Forms in C++ (and just in general), and I am not exactly sure of the name or if it's even possible to do. Currently I am currently working on a school project in which we must make a program for an imaginary bookstore. I am trying right now to make a sort of list that shows what the "customer" is buying. I have to make it sort by price and ISBN and any other variable that the book has. In essence I am trying to make something like the following: I just need to know how to get started. I can't figure out what the name of the control is or how to even get it to sort every time the user clicks on the header.

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  • Constructors and method chaining in JavaScript

    - by Sethen Maleno
    I am trying to make method chaining work in conjunction with my constructors, but I am not exactly sure how to go about it. Here is my code thus far: function Points(one, two, three) { this.one = one; this.two = two; this.three = three; } Points.prototype = { add: function() { return this.result = this.one + this.two + this.three; }, multiply: function() { return this.result * 30; } } var some = new Points(1, 1, 1); console.log(some.add().multiply()); I am trying to call the multiply method on the return value of the add method. I know there is something obvious that I am not doing, but I am just not sure what it is. Any thoughts?

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  • partial string matching - R

    - by DonDyck
    I need to write a query in R to match partial string in column names. I am looking for something similar to LIKE operator in SQL. For e.g, if I know beginning, middle or end part of the string I would write the query in format: LIKE 'beginning%middle%' in SQL and it would return matching strings. In pmatch or grep it seems I can only specify 'beginning' , 'end' and not the order. Is there any similar function in R that I am looking for? For example, say I am looking in the vector: y<- c("I am looking for a dog", "looking for a new dog", "a dog", "I am just looking") Lets say I want to write a query which picks "looking for a new dog" and I know start of the string is "looking" and end of string is "dog". If I do a grep("dog",y) it will return 1,2,3. Is there any way I can specify beginning and end in grep?

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  • Social Media Talk: Facebook, Really?? How Has It Become This Popular??

    - by david.talamelli
    If you have read some of my previous posts over the past few years either here or on my personal blog David's Journal on Tap you will know I am a Social Media enthusiast. I use various social media sites everday in both my work and personal life. I was surprised to read today on Mashable.com that Facebook now Commands 41% of Social Media Trafic. When I think of the Social Media sites I use most, the sites that jump into my mind first are LinkedIn, Blogging and Twitter. I do use Facebook in both work and in my personal life but on the list of sites I use it probably ranks closer to the bottom of the list rather than the top. I know Facebook is engrained in everything these days - but really I am not a huge Facebook fan - and I am finding that over the past 3-6 months my interest in Facebook is going down rather than up. From a work perspective - SM sites let me connect with candidates and communities and they help me talk about the things that I am doing here at Oracle. From a personal perspective SM sites let me keep in touch with friends and family both here and overseas in a really simple and easy way. Sites like LinkedIn give me a great way to proactively talk to both active and passive candidates. Twitter is fantastic to keep in touch with industry trends and keep up to date on the latest trending topics as well as follow conversations about whatever keyword you want to follow. Blogging lets me share my thoughts and ideas with others and while FB does have some great benefits I don't think the benefits outweigh the negatives of using FB. I use TweetDeck to keep track of my twitter feeds, the latest LinkedIn updates and Facebook updates. Tweetdeck is a great tool as it consolidates these 3 SM sites for me and I can quickly scan to see the latest news on any of them. From what I have seen from Facebook it looks like 70%-80% of people are using FB to grow their farm on farmville, start a mafia war on mafiawars or read their horoscope, check their love percentage, etc...... In between all these "updates" every now and again you do see a real update from someone who actually has something to say but there is so much "white noise" on FB from all the games and apps that is hard to see the real messages from all the 'games' information. I don't like having to scroll through what seems likes pages of farmville updates only to get one real piece of information. For me this is where FB's value really drops off. While I use SM everyday I try to use SM effectively. Sifting through so much noise is not effective and really I am not all that interested in Farmville, MafiaWars or any similar game/app. But what about Groups and Facebook Ads?? Groups are ok, but I am not sure I would call them SM game changers - yes there is a group for everything out there, but a group whether it is on FB or not is only as good as the community that supports and participates in it. Many of the Groups on FB (and elsewhere) are set up and never used or promoted by the moderator. I have heard that FB ads do have an impact, and I have not really looked at them - the question of cost jumps and return on investment comes to my mind though. FB does have some benefits, it is a great way to keep in touch with people and a great way to talk to others. I think it would have been interesting to see a different statistic measuring how effective that 41% of Social Media Traffic via FB really is or is it just a case of more people jumping online to play games. To me FB does not equal SM effectiveness, at the moment it is a tool that I sometimes need to use as opposed to want to use. This article was originally posted on David Talamelli's Blog - David's Journal on Tap

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  • BizTalk Server Monitoring &ndash; SharePoint Web Part

    - by SURESH GIRIRAJAN
    I have been worked with customers using BizTalk as shared infrastructure in the enterprise, where we have two or more BizTalk apps running on it for different Business groups. Also these customers are not using BizTalk ESB portal even though they are using BizTalk ESB exception framework. So main issue with all these Business groups are they don’t have visibility into the BizTalk apps running in prod, even though they are using SCOM and other monitoring stuff in place. So I am trying to address few issues I am going to list below and how I try to mitigate them, first one on the list is how to get visibility into prod, how to provision those access to the BizTalk resources with minimal activity and how can we take advantage of the resources we have today. So I was working on creating REST data services for BizTalk RFID a year ago and available on codeplex. I thought to extend that idea to take advantage of BizTalk Data Services available in codeplex. I extended the BizTalk data services I will upload the updated service soon. So let me start thru how my solution works, so first step I am using the BizTalk data service (REST service) which expose most of the BizTalk artifacts as resources such as Applications, Orchestrations, Send ports, Receive ports, Host instances and In process instances etc. BizTalk Server Monitoring – SharePoint Web Part I am hosting the BizTalk data service in IIS with application pool configured to run under BizTalk administrator credentials. So with this setup I am making the service to make accessible anonymous. Next step of this solution I have created a SharePoint Visual web part which consumes the BizTalk data service and display all the BizTalk Application and Platform settings in read only mode. Even though BizTalk data services offers to browse resources as well perform actions like starting, stopping Orchestrations, Send ports, Receive locations, Host instances etc. Host Instances BizTalk Applications BizTalk Running / Suspended Instances So having this BizTalk Monitoring SharePoint web part, will be added to the SharePoint. This eliminates the need for granting access to the BizTalk users explicitly, so when you have BizTalk contractor or BizTalk application user need to have access to the BizTalk environment all the need is have access to the SharePoint website. You can configure the web part point to different end point based on your environment. I am making this as read only as part of this to make easier for the users and in terms of provisioning. This removes the dependency of BizTalk admin at least for viewing the BizTalk application status and errors etc. If we need to make any changes to the BizTalk application then its application owner responsibility to co-ordinate with BizTalk admins. There are options like BizTalk ESB portal, BizTalk 360 etc… but this one of the approach to reduce number of steps required to give access to BizTalk application users and also to maximize the resource we have in enterprise today. Also you can expose this data service thru Azure Service Bus and access from other apps like mobile devices or create a web site hosted in Azure etc. One last thing I have tested only with BizTalk Server 2010 on x64 VM only, but it should work on other version. I will try to upload the code shortly with instructions how to setup etc.… I welcome thoughts and suggestions… Hope this helps….

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  • JDBC Triggers

    - by Tim Dexter
    Received a question from a customer last week, they were using the new rollup patch on top of 10.1.3.4.1. What are these boxes for? Don't you know? Surely? Well, they are for ... that new functionality, you know it's in the user docs, that thingmabobby doodah. OK, I dont know either, I can have a guess but let me check first. Serveral IM sessions, emails and a dig through the readme for the new patch and I had my answer. Its not in the official documentation, yet. Leslie is on the case. The two fields were designed to allow an Admin to set a users context attributes before a connection is made to a database and for un-setting the attributes after the connection is broken by the extraction engine. We got a sample from the Enterprise Manager team on how they will be using it with their VPD connections. FUNCTION bip_to_em_user (user_name_in IN VARCHAR2) RETURN BOOLEAN IS BEGIN SETEMUSERCONTEXT(user_name_in, MGMT_USER.OP_SET_IDENTIFIER); return TRUE; END bip_to_em_user; And used in the jdbc data source definition like this (pre-process function): sysman.mgmt_bip.bip_to_em_user(:xdo_user_name) You, of course can call any function that is going to return a boolean value, another example might be. FUNCTION set_per_process_username (username_in IN VARCHAR2) RETURN BOOLEAN IS BEGIN SETUSERCONTEXT(username_in); return TRUE; END set_per_process_username Just use your own function/package to set some user context. Very grateful for the mail from Leslie on the EM team's usage but I had to try it out. Rather than set up a VPD, I opted for a simpler test. Can I log the comings and goings of users and their queries using the same pre-process text box. Reaching back into the depths of my developer brain to remember some pl/sql, it was not that deep and I came up with: CREATE OR REPLACE FUNCTION BIPTEST (user_name_in IN VARCHAR2, smode IN VARCHAR2) RETURN BOOLEAN AS BEGIN INSERT INTO LOGTAB VALUES(user_name_in, sysdate,smode); RETURN true; END BIPTEST; To call it in the pre-fetch trigger. BIPTEST(:xdo_user_name) Not going to set the pl/sql world alight I know, but you get the idea. As a new connection is made to the database its logged in the LOGTAB table. The SMODE value just sets if its an entry or an exit. I used the pre- and post- boxes. NAME UPDATE_DATE S_FLAG oracle 14-MAY-10 09.51.34.000000000 AM Start oracle 14-MAY-10 10.23.57.000000000 AM Finish administrator 14-MAY-10 09.51.38.000000000 AM Start administrator 14-MAY-10 09.51.38.000000000 AM Finish oracle 14-MAY-10 09.51.42.000000000 AM Start oracle 14-MAY-10 09.51.42.000000000 AM Finish It works very well, I had some fun trying to find a nasty query for the extraction engine so that the timestamps from in to out actually had a difference. That engine is fast! The only derived value you can pass from BIP is :xdo_user_name. None of the other server values are available. Connection pools are not currently supported but planned for a future release. Now you know what those fields are for and look for some official documentation, rather than my ramblings, coming soon!

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  • Some thoughts on email hosting for one’s own domain

    - by jamiet
    I have used the same email providers for my own domains for a few years now however I am considering moving over to a new provider. In this email I’ll share my current thoughts and hopefully I’ll get some feedback that might help me to decide on what to do next. What I use today I have three email addresses that I use primarily (I have changed the domains in this blog post as I don’t want to give them away to spammers): [email protected] – My personal account that I give out to family and friends and which I use to register on websites [email protected]  - An account that I use to catch email from the numerous mailing lists that I am on [email protected] – I am a self-employed consultant so this is an account that I hand out to my clients, my accountant, and other work-related organisations Those two domains (jtpersonaldomain.com & jtworkdomain.com) are both managed at http://domains.live.com which is a fantastic service provided by Microsoft that for some perplexing reason they never bother telling anyone about. It offers multiple accounts (I have seven at jtpersonaldomain.com though as already stated I only use two of them) which are accessed via Outlook.com (formerly Hotmail.com) along with usage reporting plus a few other odds and sods that I never use. Best of all though, its totally free. In addition, given that I have got both domains hosted using http://domains.live.com I can link my various accounts together and switch between them at Outlook.com without having to login and logout: N.B. You’ll notice that there are two other accounts listed there in addition to the three I already mentioned. One is my mum’s account which helps me provide IT support/spam filtering services to her and the other is the donation account for AdventureWorks on Azure. I find that linking feature to be very handy indeed. Finally, http://domains.live.com is the epitome of “it just works”. I set up jtworkdomain.com at http://domains.live.com over three years ago and I am pretty certain I haven’t been back there even once to administer it. Proposed changes OK, so if I like http://domains.live.com so much why am I considering changing? Well, I earn my corn in the Microsoft ecosystem and if I’m reading the tea-leaves correctly its looking increasingly likely that the services that I’m going to have to be familiar with in the future are all going to be running on top of and alongside Windows Azure Active Directory and Office 365 respectively. Its clear to me that Microsoft’s are pushing their customers toward cloud services and, like it or lump it, data integration developers like me may have to come along for the ride. I don’t think the day is too far off when we can log into Windows Azure SQL Database (aka SQL Azure), Team Foundation Service, Dynamics etc… using the same credentials that are currently used for Office 365 and over time I would expect those things to get integrated together a lot better – that integration will be based upon a Windows Azure Active Directory identity. This should not come as a surprise, in my opinion Microsoft’s whole enterprise play over the past 15 or 20 years can be neatly surmised as “get people onto Windows Server and Active Directory then upsell from there” – in the not-too-distant-future the only difference is that they’re trying to do it in the cloud. I want to get familiar with these services and hence I am considering moving jtworkdomain.com onto Office 365. I’ll lose the convenience of easily being able to switch to that account at Outlook.com and moreover I’ll have to start paying for it (I think it’ll be about fifty quid a year – not a massive amount but its quite a bit more than free) but increasingly this is beginning to look like a move I have to make. So that’s where my head is at right now. Anyone have any relevant thoughts or experiences to share? Please let me know in the comments below. @Jamiet

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  • Take a chance !

    - by Hartmut Wiese
    Hi everybody, Later today I am going to reach out to the JDE Partner in EMEA I am already in contact with and ask for participation and collaboration within the new EMEA JDE Partner Community. I am very excited about this community and I really believe we will have much more success in the future selling and implementing JDEdwards in this large region. For those who don´t know me yet ... I am really a long time in the JDEdwards business. I have been a JDE PreSales Consultant and joined JDEdwards in 1998 in Germany. After JDEdwards/PeopleSoft was aquired by Oracle I changed my role and become responsible on an EMEA level for the Oracle Accelerate and the Oracle Business Accelerator program. A lot of you are already know me ... and hopefully believe and trust me as well. Within the last five months I talked to approx. 60 partners already face-to-face during the various events I attended. We had two PreSales Universities delievered already and I have been to one JDE Exsite event, a JDE Executive Forum, two User groups events and one JDE Partner Event. Again approximately 60+ partner discussions and everybody likes the idea of the community and how I am going to run this in the future. At the JDEdwards UK User Group event (NOV 13) there was an external speaker talking about risk. It was a very good speech. One key element of his speech was that a sequence of (small) failures might lead to a big success. He gave very good examples from the history not software related at all but as a results some of the well done individuals everybody knows today started very small and they failed several times before they become successful. But these persons did not gave up and in the long run they win and succeeded. I really spent some time reflecting this to our business as of today. My intention to write these lines is to convince each partner out there to think about investing in JDEdwards TODAY. There are currently a number of potential investment ideas on the table for you. We have a very strong and powerful ERP System. We have advantages against all our competitors. Each partner has the ability to create his own SaaS model and deliver individual services to the customers. We also have three Business Accelerators available which really speeds up the implementation by still having full flexibility to change for example any processing option if needed. A huge number of customers are on old releases globally and think about upgrading. New technology makes new business processes available (e.g. iPad). Oracle is a pretty much forward looking company and we build tools and products. In the area of JDEdwards our partners are combining the Oracle tools and products and bringing the value to the customers. At one point in time you have decided to run your business on your own and to become a JDE/PSFT/ORCL partner. This was a risk of course at that point of time. You did not fail and this is very good of course. Business has changed and Oracle has the product and tools for you to become even more successful in the future but it is a very good time for you to take a risk again. I am not able to promise you anything but the situation is very good. You might not win every deal or increase your margin immediately but I truly believe you will find new ways of doing your business in the future by adopting some of our ideas. The only person who can stop you ... is you. Please try something new/different. Success sometimes needs some time and initial failures but if you never failed - you have never lived. To get support during this phase please share your doubts, thoughts, experiences inside the new JDEdwards community and learn from others who went to similar processes. Please join here. Take care and best regards Hartmut Wiese

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  • The inevitable Hello World post!

    - by brendonpage
    Greetings to anyone reading this! This is my first of hopefully many posts. I would like to use this post to introduce myself and to let you know what to expect from this blog in future. Okay so a bit about myself. In case you missed the name of this blog, my name is Brendon Page! I am a Software Developer from South Africa and work for a small company who’s main focus is producing software for the kitchen cupboard industry, although from time to time we do produce custom solutions for other industries. I work in a small team of 3, including myself, and am fortunate enough to work from home! I have been involved in IT since 1996, which is when I got my first PC, and started working as a junior programmer in 2003. Outside of work I enjoy playing squash, PC Games and of course LANing with my friends. If I get any free time between all of that I will usually dedicate some of it to a personal project, these are mainly prototypes for an idea I have had or for something that could be useful at work. I was in 2 minds on whether to include a photo of myself. The reason for this was because while I was looking for a suitable photo to use, it dawned on me how much time I dedicate to pulling funny faces in photos! I also realized how little I shave, which I blame completely on working form home. So after much debate here I am, funny face, beard and all!   Now that you know a bit about me lets move onto what expect from this blog. I work predominantly with Microsoft technologies so most if not all of my posts will be related to something Microsoft. Since most of my job entails Software Development you can expect a lot of posts which will deal with the .NET Framework. I am currently working on a large Silverlight project, so my first few posts will be targeted at in that direction. I will be striving to make the content of my posts as useful as possible from both an explanation and code perspective, I aim to include a working solution for every post, which I will put up on my skydrive for download. Here is what I have planned for my next few posts: Where did my session variables go?  Here I will take you through the lessons I learnt the hard way about the ASP.NET session. I am not going to go into to much depth in this post, as there is already a lot of information available on it. I mainly want to cover it in an effort to keep the scope creep of my posts to a minimum, some the solutions I upload will use it and I would like to have a post that I can reference to explain why I am doing something a certain way. Uploading files through SIlverlight Again there is a lot of existing information on this topic, so I wont be going into to much depth, but I will be using the solution from this as a base for my next post. Generating and Displaying DeepZoom images dynamically in Silverlight Well the title pretty much speaks for it’s self on this one. As I mentioned I will be building off the solution that I create in my ‘Uploading files through Silverlight’ post. Securing DeepZoom images using a custom implementation of the MultiScaleTileSource In this post I will look at the privacy issue surrounding the default usage of DeepZoom images in Silverlight and how to overcome it. This makes the use of DeepZoom in privacy conscious applications more viable. Thanks to anyone who actually read this post! I look forward to producing more which will hopefully be helpful to you.

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  • Web Developer - How to enhance my skillset?

    - by atif089
    First of all pardon my English. I am not a native English speaker I have been a Web Developer for the past 4 years. In these 4 years I have spent my time on the internet to learn things. My current skillset comprises of HTML CSS PHP MySQL jQuery (I would not say js and rather say jQuery because I am good at using jQuery and bad with plain javascript.) The above things seemed like an easier part of my life as I quickly learned them. But now I would really like to enhance my skillset and I am pretty confused which way to move ahead considering that I have to learn things using the web and references on my own. Design My first option is towards design. Shall I get started with design and start using Adobe Illustrator, Photoshop, Flash, Flex. Designing along with my previous skills looks like a money maker to me. As both are co-related to each other when web design is considered. And its easier to learn the first 2 and I hope I can get tutorials for the last 2 as well. Marketing A lot of my existing clients asked me if I do SEO. So this looked as a good field to me as well. I cannot estimate the scope of SEO but I assume it has a long future. Since I am business minded as well and there are a lot of tutorials around, should I start with SEO, SEM, Social Media, PPC or whatever it consists of. Software Development The complex plight and hardest thing (perhaps) but the easiest way to find a decent job in my location. If I go for software development what platform should be that I should be ideally going after? Should it be C# for windows development, or ASP.NET (once again enhances my skill set), J2EE (there are a lot of jobs for J2EE developers here) or plain C and C++. Also I think it is difficult to learn software languages right from Hello World, using internet? I have no clue how I learned PHP but I am sort of a pro now, but these other languages seems like a disaster to me? I cant figure out the reason if its because PHP is easier or there was a lot of tutorials around for PHP. Anyways is it also possible to learn software development right from Hello World using the web? Database / Server (Linux) / Network Administration Seems like a job with a decent pay but less number of jobs and a bit harder to learn online. (not sure) What should be the right track I should move ahead. P.S - Age is not a constraint for me as I am between 20-21, and I come from an IT background. I know quite little basics about C (upto structures) C++ (upto objects, I was not able to understand templates) Core Java (some basics and OOP concept) RDBMS Visual Basic 6 (used to do this long back) UNIX (a bunch of commands like who, finger, chmod, ls and a bit of #bash) Or is there anything else that I left out? I need you guys to please give me a feedback and the reason why I should select that field.

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  • Why googling by keycaptcha gives results on reCAPTCHA? [closed]

    - by vgv8
    EDIT: I'd like to change this title to: How to STOP Google's manipulation of Google search engine presented to general public? I am frequently googling and more and more frequently bump when searching by one software product I am given instead the results on Google's own products. For ex., if I google by keyword keycaptcha for the "Past 24 hours" (after clicking on "Show search tools" -- "Past 24 hours" on the left sidebar of a browser) I am getting the Google's search results show only results on reCAPTCHA. Image uploaded later: Though, if confine keycaptcha in quotes the results are "correct" (well, kind of since they are still distorted in comparison with other search engines). I checked this during few months from different domains at different ISPs, different operating systems and from a dozen of browsers. The results are the same. Why is it and how can it be possibly corrected? My related posts: "How Gmail spam filter works?" IP adresses blacklisting Update: It is impossible for me to directly start using google.com as I am always redirected to google.ru (from google.com) by my ip-address "auto-detect location" google's "convenience". The google's help tells that it is impossible to switch off my location auto-detection because it is very helpful feature. There is a work-around to use google.com/ncr (to get google.com) (?anybody know what does it mean) to prevent redirection from google.com but even. But all results are exactly the same OK, I can search by quoted "keycaptcha", I am already accustomed to these google's quirks, but the question arises why the heck to burn time promoting someone's product if GOOGLE uses other product brands for showing its own interests/brands (reCAPTCHA) instead and what can be done with it? The general user will not understand that he was cheated and just will pick up the first (wrong) results Update2: Note that this googling behaviour: is independent on whether I am logged-in (or log-out-ed of) a google account, which account, on browser (I tried Opera, Chrome, FireFox, IE of different versions, Safari), OS or even domain; there are many such cases but I just targeted one concrete restricted example speciffically to to prevent wandering between unrelated details and peculiarities; @Michael, first it is not true and this text contains 2 links for real and significant results.. I also wrote that this is just one concrete example from many and based on many-month exp. These distortions happen upon clicking on: Past 24 hours, Past week, Past month, Past year in many other keywords, occasions/configurations of searches, etc. Second, the absence of the results is the result and there is no point to sneakingly substitute it by another unsolicited one. It is the definition of spam and scam. 3d, the question is not abt workarounds like how to write search queries or use another searching engines. The question is how to straighten the googling's results in order to stop disorienting general public about. Update: I could not understand: nobody reproduces the described by me behavior (i.e. when I click "Past 24 hours" link in google search searching for keycaptcha, the presented results are only on reCAPTCHA presented)? Update: And for the "Past week":

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  • Is there any kind of established architecture for browser based games?

    - by black_puppydog
    I am beginning the development of a broser based game in which players take certain actions at any point in time. Big parts of gameplay will be happening in real life and just have to be entered into the system. I believe a good kind of comparison might be a platform for managing fantasy football, although I have virtually no experience playing that, so please correct me if I am mistaken here. The point is that some events happen in the program (i.e. on the server, out of reach for the players) like pulling new results from some datasource, starting of a new round by a game master and such. Other events happen in real life (two players closing a deal on the transfer of some team member or whatnot - again: have never played fantasy football) and have to be entered into the system. The first part is pretty easy since the game masters will be "staff" and thus can be trusted to a certain degree to not mess with the system. But the second part bothers me quite a lot, especially since the actions may involve multiple steps and interactions with different players, like registering a deal with the system that then has to be approved by the other party or denied and passed on to a game master to decide. I would of course like to separate the game logic as far as possible from the presentation and basic form validation but am unsure how to do this in a clean fashion. Of course I could (and will) put some effort into making my own architectural decisions and prototype different ideas. But I am bound to make some stupid mistakes at some point, so I would like to avoid some of that by getting a little "book smart" beforehand. So the question is: Is there any kind of architectural works that I can read up on? Papers, blogs, maybe design documents or even source code? Writing this down this seems more like a business application with business rules, workflows and such... Any good entry points for that? EDIT: After reading the first answers I am under the impression of having made a mistake when including the "MMO" part into the title. The game will not be all fancy (i.e. 3D or such) on the client side and the logic will completely exist on the server. That is, apart from basic form validation for the user which will also be mirrored on the server side. So the target toolset will be HTML5, JavaScript, probably JQuery(UI). My question is more related to the software architecture/design of a system that enforces certain rules. Separation of ruleset and presentation One problem I am having is that I want to separate the game rules from the presentation. The first step would be to make an own module for the game "engine" that only exposes an interface that allows all actions to be taken in a clean way. If an action fails with regard to some pre/post condition, the engine throws an exception which is then presented to the user like "you cannot sell something you do not own" or "after that you would end up in a situation which is not a valid game state." The problem here is that I would like to be able to not even present invalid action in the first place or grey out the corresponding UI elements. Changing and tweaking the ruleset Another big thing is the ruleset. It will probably evolve over time and most definitely must be tweaked. What's more, it should be possible (to a certain extent) to build a ruleset that fits a specific game round, i.e. choosing different kinds of behaviours in different aspects of the game. This would do something like "we play it with extension A today but we throw out extension B." For me, this screams "Architectural/Design pattern" but I have no idea on who might have published on something like this, not even what to google for.

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  • I need help with 2D collision response (of stacking rotating polygons, with friction and gravity, for a game)

    - by Register Sole
    Hi I am looking for suggestions on how to write a collision response for game programming purpose (so not a scientific simulation). I am dealing with 2D polygons that are rotating, and I want them to be able to stack. I also want friction and gravity. I have a detection mechanism that returns the separating axis, how long the polygons are overlapping, and up to 2 points of contact. For the response, I am currently using an impulse-based response, which main idea is: find the separating axis, length of overlap, and the point of contact (if there are two, pick a random point between to simulate averaged force. i believe there are better ways than this) separate the object (modifying their positions, taking into account of their masses. i do not separate them completely though, to keep track that they are colliding to reduce jitter) calculate normal force based on the coefficient of restitution as if there is no friction. calculate friction, as if there is no normal force. I also assume that the direction of the friction is the same throughout the collision. apply the two forces (which result in a rather inaccurate result, since each force is calculated as if the other is not present. for non-rotating bodies though, this method is exact) I am aware that this method requires the coefficient of friction to be sufficiently small due to the assumption that the direction of friction stays the same in a collision. Also, the result is visually satisfying if gravity is not present. However, when there is gravity, objects on ground jitter and drift (even with zero coefficient of restitution)! It also happens for stacking objects. Larger coefficient of restitution and gravity increase the jittering. I hope you can help me with this. Some things i would like to know more about is how to handle collision with two point of contacts (how to end up having an object sitting still on the ground?), how to reduce, and prevent if possible, jitter and drift (do people use the most accurate method possible, or is there a trick to overcome this?), and how to handle multiple objects collision (for example, in the case of stacking objects, how do I check collisions between all of them and keep them all stable at every frame so they don't jitter?). A total reformulation of my algorithm is also welcomed, as long as it works. Another thing to note is that I am not making a Physics game, so I only need a visually satisfying response (though a realistic response is preferable, if it is not performance-heavy). But surely jittering and drifting objects on flat ground are not at all acceptable. In addition, I am a Physics student, so feel free to talk about impulse and whatever needed. Finally, I'm sorry for the long post. I tried to be as concise as I can. Thank you for reading it! EDIT It seems what I didn't manage to come up all this time is to separate resting contact as a class of its own and how to solve them. Currently reading the paper suggested by Jedediah. More suggestions on the topic are welcome :) CASE CLOSED After reading various papers referenced in the paper, successfully implemented simultaneous impulse method (referring to the original paper by Erin Catto, [Catt05]). Thanks maaaan!! The paper is wonderful. The current system is visibly much better than the previous. Still haven't separated resting contact as a class of its own though, which brings me to my next question. Love you all! Haha (sorry, I'm just so happy thanks to you).

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