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  • Using texture() in combination with JBox2D

    - by Valentino Ru
    I'm getting some trouble using the texture() method inside beginShape()/endShape() clause. In the display()-method of my class TowerElement (a bar which is DYNAMIC), I draw the object like following: void display(){ Vec2 pos = level.getLevel().getBodyPixelCoord(body); float a = body.getAngle(); // needed for rotation pushMatrix(); translate(pos.x, pos.y); rotate(-a); fill(temp); // temp is a color defined in the constructor stroke(0); beginShape(); vertex(-w/2,-h/2); vertex(w/2,-h/2); vertex(w/2,h-h/2); vertex(-w/2,h-h/2); endShape(CLOSE); popMatrix(); } Now, according to the API, I can use the texture() method inside the shape definition. Now when I remove the fill(temp) and put texture(img) (img is a PImage defined in the constructor), the stroke gets drawn, but the bar isn't filled and I get the warning texture() is not available with this renderer What can I do in order to use textures anyway? I don't even understand the error message, since I do not know much about different renderers.

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  • XML Rules Engine and Validation Tutorial with NIEM

    - by drrwebber
    Our new XML Validation Framework tutorial video is now available. See how to easily integrate code-free adaptive XML validation services into your web services using the Java CAMV validation engine. CAMV allows you to build fault tolerant content checking with XPath that optionally use SQL data lookups. This can provide warnings as well as error conditions to tailor your validation layer to exactly meet your business application needs. Also available is developing test suites using Apache ANT scripting of validations.  This allows a community to share sets of conformance checking test and tools . On the technical XML side the video introduces XPath validation rules and illustrates and the concepts of XML content and structure validation. CAM validation templates allow contextual parameter driven dynamic validation services to be implemented compared to using a static and brittle XSD schema approach.The SQL table lookup and code list validation are discussed and examples presented.Features are highlighted along with a demonstration of the interactive generation of actual live XML data from a SQL data store and then validation processing complete with errors and warnings detection.The presentation provides a primer for developing web service XML validation and integration into a SOA approach along with examples and resources. Also alignment with the NIEM IEPD process for interoperable information exchanges is discussed along with NIEM rules services.The CAMV engine is a high performance scalable Java component for rapidly implementing code-free validation services and methods. CAMV is a next generation WYSIWYG approach that builds from older Schematron coding based interpretative runtime tools and provides a simpler declarative metaphor for rules definition. See: http://www.youtube.com/user/TheCAMeditor

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  • How to optimize a box2d simulation in action game?

    - by nathan
    I'm working on an action game and i use box2d for physics. The game use a tiled map. I have different types of body: Static ones used for tiles Dynamic ones for player and enemies Actually i tested my game with ~150 bodies and i have a 60fps constantly on my computer but not on my mobile (android). The FPS drop as the number of body increase. After having profiled the android application, i saw that the World.step took around 8ms in CPU time to execute. Here are few things to note: Not all the world is visible on screen, i use a scrolling system Enemies are constantly moving toward the player so there is alaways to force applied to their body Enemies need to collide between each others Enemies collide with tiles I also now that i can active/desactive or sleep/awake bodies. Considering the fact that only a part of the enemies are possibly displayed on screen, is there any optimizations i can do to reduce the execution time of box2d simulation? I found a guy trying an optimization based on distance of enemies from the player (link). But i seems like he just desactives far bodies (in my case, i could desactive bodies that are not visible). But my enemies need to move even when they are not visible on screen, and applying forces will not workd on inactive bodies. Should i play with sleeping bodies here? Also, enemies are composed by two fixtures and are constantly colliding with each others and with tiles but i really never need to get notified about that. Is there anything i can do to optimize this kind of scenario? Finally, am i wrong to try to run simulation at 60FPS on mobile and should i try to make it run at 30FPS?

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  • Information I need to know as a Java Developer [on hold]

    - by Woy
    I'm a java developer. I'm trying to get more knowledge to become a better programmer. I've listed a number of technologies to learn. Instead of what I've listed, what technologies would you suggest to learn as well for a Junior Java Developer? I realize, there's a lot of things to study. Java: - how a garbage collector works - resource management - network programming - TCP/IP HTTP - transactions, - consistency: interfaces, classes collections, hash codes, algorithms, comp. complexity concurrent programming: synchronizing, semafores steam management metability: thread-safety byte code manipulations, reflections, Aspect-Oriented Programming as base to understand frameworks such as Spring etc. Web stack: servlets, filters, socket programming Libraries: JDK, GWT, Apache Commons, Joda-Time, Dependency Injections: Spring, Nano Tools: IDE: very good knowledge - debugger - profiler - web analyzers: Wireshark, firebugs - unit testing SQL/Databases: Basics SELECTing columns from a table Aggregates Part 1: COUNT, SUM, MAX/MIN Aggregates Part 2: DISTINCT, GROUP BY, HAVING + Intermediate JOINs, ANSI-89 and ANSI-92 syntax + UNION vs UNION ALL x NULL handling: COALESCE & Native NULL handling Subqueries: IN, EXISTS, and inline views Subqueries: Correlated ITH syntax: Subquery Factoring/CTE Views Advanced Topics Functions, Stored Procedures, Packages Pivoting data: CASE & PIVOT syntax Hierarchical Queries Cursors: Implicit and Explicit Triggers Dynamic SQL Materialized Views Query Optimization: Indexes Query Optimization: Explain Plans Query Optimization: Profiling Data Modelling: Normal Forms, 1 through 3 Data Modelling: Primary & Foreign Keys Data Modelling: Table Constraints Data Modelling: Link/Corrollary Tables Full Text Searching XML Isolation Levels Entity Relationship Diagrams (ERDs), Logical and Physical Transactions: COMMIT, ROLLBACK, Error Handling

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  • Wallpapers of only some users being dynamically loaded in LightDM

    - by Kazark
    As this answer explains: Ubuntu 12.04 Unity greeter has introduced selected user dynamic background, that means that when selecting a user from the available users list the background will change to reflect the selected user's desktop background. However, I am puzzled, because in my experience this isn't consistently true. On one of my family members' computers, where there are three users, only one of the users' background shows in LightDM. None of the users are newly created. The user whose background is showing has a custom background; one of the users whose background doesn't show also does; and the other one who doesn't has the default switching wallpaper set. It is not a clean install but has been incrementally upgraded from about 8.04. Any idea what could be happening? This is a similar question, though we're also having the opposite problem (default wallpapers not showing). (I do not have access to the computer mentioend above at the moment; when I do I will use some of the criteria given there to analyze the problem further.)

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  • JavaScript and the User Experience

    5 sites I commonly vist at home: Google.com Gmail.com Linkedin.com Capella.edu Codeplex.com All of the top 5 sites I visit at home use JavaScript and is applied in various ways for various reasons. Gmail and Google make use of Ajax to retrieve information without the user having to call another page. In addition, all 5 of the websites use JavaScript to enhance a user's experience. Examples of this can be found in content rotation on Capella's main site and the displaying and hiding of specific content sections from within our course room. Codeplex uses Ajax and JavaScript to show dynamic content on its homepage and allow users to page through the data. I think there use of JavaScript is well placed and enhances the viewing experience of the user because it reduces the amount of interaction a user has to perform for them to obtain information they are looking to see. I have used JavaScript in various ways. One of the most memorable ways was to enable an HTML table to be able to have its rows paged and sorted based on the values in each table row.  

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  • String on a model

    - by alecnash
    I am trying to put a sting on a Model and I want it to be dynamic. Did some research and came up with drawing the text on the texture and then set it on the model. I use something like this: public static Texture2D SpriteFontTextToTexture(SpriteFont font, string text, Color backgroundColor, Color textColor) { Size = font.MeasureString(text); RenderTarget2D renderTarget = new RenderTarget2D(GraphicsDevice, (int)Size.X, (int)Size.Y); GraphicsDevice.SetRenderTarget(renderTarget); GraphicsDevice.Clear(Color.Transparent); Spritbatch.Begin(); //have to redo the ColorTexture Spritbatch.Draw(ColorTexture.Create(GraphicsDevice, 1024, 1024, backgroundColor), Vector2.Zero, Color.White); Spritbatch.DrawString(font, text, Vector2.Zero, textColor); Spritbatch.End(); GraphicsDevice.SetRenderTarget(null); return renderTarget; } When I was working with primitives and not models everything worked fine because I set the texture exactly where I wanted but with the model (RoundedRect 3d button) it looks like that: Is there a way to have the text centered only on one side?

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  • Linux, GNU GCC, ld, version scripts and the ELF binary format -- How does it work? [closed]

    - by themoondothshine
    I'm trying to learn more about library versioning in Linux and how to put it all to work. Here's the context: I have two versions of a dynamic library which expose the same set of interfaces, say libsome1.so and libsome2.so. An application is linked against libsome1.so. This application uses libdl.so to dynamically load another module, say libmagic.so. Now libmagic.so is linked against libsome2.so. Obviously, without using linker scripts to hide symbols in libmagic.so, at run-time all calls to interfaces in libsome2.so are resolved to libsome1.so. This can be confirmed by checking the value returned by libVersion() against the value of the macro LIB_VERSION. So I try next to compile and link libmagic.so with a linker script which hides all symbols except 3 which are defined in libmagic.so and are exported by it. This works... Or at least libVersion() and LIB_VERSION values match (and it reports version 2 not 1). However, when some data structures are serialized to disk, I noticed some corruption. In the application's directory if I delete libsome1.so and create a soft link in its place to point to libsome2.so, everything works as expected and the same corruption does not happen. I can't help but think that this may be caused due to some conflict in the run-time linker's resolution of symbols. I've tried many things, like trying to link libsome2.so so that all symbols are alised to symbol@@VER_2 (which I am still confused about because the command nm -CD libsome2.so still lists symbols as symbol and not symbol@@VER_2), but nothing seems to work. What am I doing wrong?

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  • Simplifying data search using .NET

    - by Peter
    An example on the asp.net site has an example of using Linq to create a search feature on a Music album site using MVC. The code looks like this - public ActionResult Index(string movieGenre, string searchString) { var GenreLst = new List<string>(); var GenreQry = from d in db.Movies orderby d.Genre select d.Genre; GenreLst.AddRange(GenreQry.Distinct()); ViewBag.movieGenre = new SelectList(GenreLst); var movies = from m in db.Movies select m; if (!String.IsNullOrEmpty(searchString)) { movies = movies.Where(s => s.Title.Contains(searchString)); } if (!string.IsNullOrEmpty(movieGenre)) { movies = movies.Where(x => x.Genre == movieGenre); } return View(movies); } I have seen similar examples in other tutorials and I have tried them in a real-world business app that I develop/maintain. In practice this pattern doesn't seem to scale well because as the search criteria expands I keep adding more and more conditions which looks and feels unpleasant/repetitive. How can I refactor this pattern? One idea I have is to create a column in every table that is "searchable" which could be a computed column that concatenates all the data from the different columns (SQL Server 2008). So instead of having movie genre and title it would be something like. if (!String.IsNullOrEmpty(searchString)) { movies = movies.Where(s => s.SearchColumn.Contains(searchString)); } What are the performance/design/architecture implications of doing this? I have also tried using procedures that use dynamic queries but then I have just moved the ugliness to the database. E.g. CREATE PROCEDURE [dbo].[search_music] @title as varchar(50), @genre as varchar(50) AS -- set the variables to null if they are empty IF @title = '' SET @title = null IF @genre = '' SET @genre = null SELECT m.* FROM view_Music as m WHERE (title = @title OR @title IS NULL) AND (genre LIKE '%' + @genre + '%' OR @genre IS NULL) ORDER BY Id desc OPTION (RECOMPILE) Any suggestions? Tips?

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  • Efficient algorithm for Virtual Machine(VM) Consolidation in Cloud

    - by devansh dalal
    PROBLEM: We have N physical machines(PMs) each with ram Ri, cpu Ci and a set of currently scheduled VMs each with ram requirement ri and ci respectively Moving(Migrating) any VM from one PM to other has a cost associated which depends on its ram ri. A PM with no VMs is shut down to save power. Our target is to minimize the weighted sum of (N,migration cost) by migrating some VMs i.e. minimize the number of working PMs as well as not to degrade the service level due to excessive migrations. My Approach: Brute Force approach is choosing the minimum loaded PM and try to fit its VMs to other PMs by First Fit Decreasing algorithm or we can select the victim PMs and target PMs based on their loading level and shut down victims if possible by moving their VMs to targets. I tried this Greedy approach on the Data of Baadal(IIT-D cloud) but It isn't giving promising results. I have also tried to study the Ant colony optimization for dynamic VM consolidating but was unable to understand very much. I used the links. http://dumas.ccsd.cnrs.fr/docs/00/72/52/15/PDF/Esnault.pdf http://hal.archives-ouvertes.fr/docs/00/72/38/56/PDF/RR-8032.pdf Would anyone please clarify the solution or suggest any new approach/resources for better performance. I am basically searching for the algorithms not the physical optimizations and I also know that many commercial organizations have provided these solution but I just wanted to know more the underlying algorithms. Thanks in advance.

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  • ADF Hands on Training &ndash; Prerequisites for 22nd March 2011

    - by Grant Ronald
    For those of you coming to the ADF Hands on training on the 22nd March in London, there was a link to the prerequisites.  Unfortunately, in a reshuffle of content on OTN, this page was removed.  So, over the next day or so I’m hoping to the pull together the relevant information into this blog post.  So keep checking back! Firstly, you need to being your laptop with you to do the hands on exercises.  No laptop, no hands on. Recommended 2GB RAM running Microsoft Windows XP SP2, 2003 Server SP2, Vista (32 bit only), Windows 7 or Linux or Mac 2GHz Processor (less will be acceptable but slower) Mozilla Firefox 2.0 or higher, Internet Explorer 7 or higher, Safari 3.0 and higher, Google Chrome 1.0 or higher Winzip or other extracting software Adobe Acrobat reader Flash (if you want to see dynamic graphs in your application) As for software, you will need have installed JDeveloper 11g.  The hands on instructions are based on 11.1.1.2 (or is it 11.1.1.3)! anyway, either of those or 11.1.1.4 would be required. You also need an Oracle database on your machine and access to the HR schema (which should be unlocked).  Don’t expect to have access to a network and VPN to a database. A simple test, unplug your laptop from your corporate network, run up JDev  and select File –> New –> Database connection and make sure you can connect to HR database and see the Emp/Dept etc tables.  If you can do that, you should be good to go. I would strongly recommend ensuring you have this in place before you arrive on Tuesday. Look forward to seeing you there.

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  • Best approach for tracking dependent state

    - by Pace
    Let's pretend I work on a project tracking application. The application is a database backed, server hosted, web application. In this application there are Projects which have many Activities which have many Tasks. A Task has two date fields an originalDueDate and a projectedDueDate. In addition, there are dynamic fields on the Activities and the Projects which indicate whether the Activity or Project is behind schedule based on the projected due dates of the child tasks and various other variables such as remaining buffer time, etc. There are a number of things that can cause the projectedDueDate to change. For example, an employee working on the project may (via a server request) enter in a shipping delay. Alternatively, a site may (via a server request) enter in an unexpected closure. When any of these things occur I need to not only update the projectedDueDate of the Task but also trigger the corresponding Project and Activity to update as well. What is the best way to do this? I've thought of the observer pattern but I don't keep a single copy of all these objects in memory. When a request comes in, I query the Task in from the database, at that point there is no associated Activity in memory that would be a listener. I could remove the ability to query for Tasks and force the application to query first by Project, then by Activity (in context of Project), then by task (in context of Activity) adding the observer relationships at each step but I'm not sure if that is the best way. I could setup a database event listening system so when a Task modified event is dispatched I have a handler which queries for the Activity at that point. I could simply setup a two-way relationship between Task and Activity so that the Task knows about the parent Activity and when the Task updates his state the Task grabs his parent and updates state. Right now I'm stuck considering all the options and am wondering if any single approach (doesn't have to be a listed approach) is jumping out at others as the best approach.

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  • Rectangular Raycasting?

    - by igrad
    If you've ever played The Swapper, you'll have a good idea of what I'm asking about. I need to check for, and isolate, areas of a rectangle that may intersect with either a circle or another rectangle. These selected areas will receive special properties, and the areas will be non-static, since the intersecting shapes themselves will also be dynamic. My first thought was to use raycasting detection, though I've only seen that in use with circles, or even ellipses. I'm curious if there's a method of using raycasting with a more rectangular approach, or if there's a totally different method already in use to accomplish this task. I would like something more exact than checking in large chunks, and since I'm using SDL2 with a logical renderer size of 1920x1080, checking if each pixel is intersecting is out of the question, as it would slow things down past a playable speed. I already have a multi-shape collision function-template in place, and I could use that, though it only checks if sides or corners are intersecting; it does not compute the overlapping area, or even find the circle's secant line, though I can't imagine it would be overly complex to implement. TL;DR: I need to find and isolate areas of a rectangle that may intersect with a circle or another rectangle without checking every single pixel on-screen.

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  • Farseer circle hangs where it's spawned

    - by necrosmash
    I'm currently trying to simply spawn a circle in Farseer. However, it's stuck wherever I spawn it! The game is updating fine, as I can see the circle spinning in place when I spawn it because of how I currently have gravity set up (following code from Game1.cs): // Initialise the screen center for use with // the Level class screenCenter = new Vector2(graphics.GraphicsDevice.Viewport.Width / 2f, graphics.GraphicsDevice.Viewport.Height / 2f); world = new World(new Vector2(20, 20)); currentLevel = new Level1(screenCenter, circleSprite, groundSprite, ref world); Level1 constructor: public Level1(Vector2 screenCenter, Texture2D circleSprite, Texture2D groundSprite, ref World world) { player = new Player(ref world, screenCenter, circleSprite); ground = new Ground(ref world, screenCenter, groundSprite); listLevelItems = new List<LevelItem>(); listLevelItems.Add(player); listLevelItems.Add(ground); } Player constructor: public Player(ref World world, Vector2 screenCenter, Texture2D sprite) { setSprite(sprite); setPosition((screenCenter / MeterInPixels) + new Vector2(0f, 0f)); playerBody = BodyFactory.CreateCircle(world, 96f / (2f * MeterInPixels), 1f, playerPosition); getBody().BodyType = BodyType.Dynamic; // Ball bounce and friction getBody().Restitution = 0.3f; getBody().Friction = 0.5f; } If I use a breakpoint and change the playerBody position while the game is halted, the ball does move, but stays fixed in its new location. Any help would be greatly appreciated.

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  • I need a decent alternative to c++ [closed]

    - by wxiiir
    I've learned php and c++, i will list the things i liked and didn't liked on each of them, how i decided to learn them in the first place and why i feel the need to learn a decent alternative to c++, i'm not a professional programmer and only do projects for myself. PHP - Decided to learn because i wanted to build a dynamic website, that i did and turned out very good, i even coded a 'not so basic' search engine for it that would display the results 'google style' and really fast, pretty cool stuff. PROS - Pretty consistent syntax for all stuff (minor caveats), great functionality, a joy for me to code in it (it seems to 'know' what i want it to do and just does it) CONS - Painfully slow for number crunching (which takes me to c++ that i only learned because i wanted to do some number crunching and it had to be screaming fast) C++ - Learned because number crunching was so slow in php and manipulating large amounts of data was very difficult, i thought, it's popular programming language and all, and tests show that it's fast, the basic stuff resemble php so it shouldn't be hard to pick up PROS - It can be used to virtually anything, very very fast CONS - Although fun to code at the start, if i need to do something out of the ordinary, memory allocation routines, pointer stuff, stack sizes etc... will get me tired really quick, syntax is a bit inconsistent some times (more caveats) I guess that from what i wrote you guys will understand what i'm looking for, there are thousands of languages out there, it's likely that one of them will suit my needs, i've been seeing stuff today and a friend of mine that is a professional programmer tried OCaml and Fortran and said that both are fast for numerical stuff, i've been inclined to test Fortran, but i need some more input because i want to have some other good 'candidates' to choose from, for example the python syntax seemed great to me, but then i found out from some tests that it was a lot slower than c++ and i simply don't want to twiddle my thumbs all day.

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  • How do I generate and post XML in c# [migrated]

    - by user2922687
    I am a new to c# and faced with a similar problem. I need to generate and post XML to a URL but the parameter in the XML fields should dynamic getting inputs from a frontend app. This layout of the XML <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ret="http://xxx.xxx.com"> <soapenv:Header/> <soapenv:Body> <ret:Vend> <DestAccount >?</DestAccount> <Amount>?</Amount> <Msg>?</Msg> <SequenceNo>?</SequenceNo> <DealerNo>?</DealerNo> <Password>?</Password> </ret:Vend> </soapenv:Body> </soapenv:Envelope> Can anyone assist on how I can generate this in c#?

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  • Minimizing use of paper

    - by Abody97
    I've recently faced this problem in a dynamic programming curriculum, and I honestly have no idea about how to determine the appropriate state. You're given N (1 <= N <= 70) paragraphs and M (1 <= M <= N) figures. Each paragraph i requires PL_i (1 <= PL_i <= 100) lines and references at most one figure. Each figure is referenced exactly once (i.e., no two paragraphs can reference the same figure, and for each figure there's a paragraph that references it.) Each figure requires PF_i (1 <= PF_i <= 100) lines. The task is to distribute those figures and paragraphs on paper in the order they're given, where one paper fits for L lines at most. No paragraph or figure is too large to fit on one paper. If a paragraph x placed on paper x_p references a figure y then y must be placed on either the paper x_p - 1 or x_p or x_p + 1. We have to find the minimum number of lines (and thus pages) to allocate in order to distribute all the figures and paragraphs. Any help would be extremely appreciated. Thanks in advance!

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  • Series On Embedded Development (Part 1)

    - by user12612705
    This is the first in a series of entries on developing applications for the embedded environment. Most of this information is relevant to any type of embedded development (and even for desktop and server too), not just Java. This information is based on a talk Hinkmond Wong and I gave at JavaOne 2012 entitled Reducing Dynamic Memory in Java Embedded Applications. One thing to remember when developing embeddded applications is that memory matters. Yes, memory matters in desktop and server environments as well, but there's just plain less of it in embedded devices. So I'm going to be talking about saving this precious resource as well as another precious resource, CPU cycles...and a bit about power too. CPU matters too, and again, in embedded devices, there's just plain less of it. What you'll find, no surprise, is that there's a trade-off between performance and memory. To get better performance, you need to use more memory, and to save more memory, you need to need to use more CPU cycles. I'll be discussing three Memory Reduction Categories: - Optionality, both build-time and runtime. Optionality is about providing options so you can get rid of the stuff you don't need and include the stuff you do need. - Tunability, which is about providing options so you can tune your application by trading performance for size, and vice-versa. - Efficiency, which is about balancing size savings with performance.

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  • Model View Controller² [closed]

    - by user694971
    I am working on a quite complex web application in Go and I tried to stay in an MVC pattern. However, I ended up having a structure isomorphic to this: /boilerplate The usual boilerplate an application needs to survive in the wilderness /db Layer talking to an SQL DB /helpers Helpers /logic Backend logic, not directly affiliated with any routes, sessions etc. /templates View /web Glue between /logic and /templates. In more dynamic languages the size of /web would be next to zero. But Go doesn't exactly have a RoR integrated so I need a lot of helper structures to feed the templates with data, to process GET/POST parameters and session information. I remember once reading about patterns similar to MVC with one extra letter but Wiki-searching I couldn't find it right now. (BTW currently /logic also contains data retrieval from API services to fill some hash maps; this is no simple task, but that probably belongs into the model, right?) So question: is this structure considered sane? Or does it need some bending to be tagged MVC app?

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  • How do I get any number of links to space evenly? [migrated]

    - by Aerodynamo
    Alright, so here is the situation... Say I have a navbar for a site, and I allow users to change the number of links they want on this navbar. This means they could have 3, 5, 10, etc. What I want to do is make it so that if one link is up, it only takes up, say, 1/5th of the space on the navbar. If I weren't using borders, I might do something like: width: 18%; padding: 0 1%; However, I have two problems with this: 1) For 4 buttons, that's fine that it doesn't fill up the whole row. It would look ugly if the links were too wide... but when I have 6 or 7 buttons, it's got huge overflow! 2) Since I have borders, I can't use a percentage value for the borders or the widths, because I can't properly estimate how much of the percentage it will be. Now, I know I don't have to use percentage values, but what I would ideally prefer is that the first button is the smallest possible size necessary for all the other buttons to fit properly, meaning that if I have 950px and 6 links, the first link can be about 150px while the others are 160px... that's fine. I want all the other buttons on the navbar to be equally sized, regardless of how many links there are. I also need for it to accept a border... I figure the way to do this is to put a border in the nested div, so that way it doesn't effect the overall width of the button? This is all well and good, but I'm still plagued by the issue of not being able to design a dynamic site using the style I want if I can't get all the nav buttons to fit the width properly. Are there some js tricks I could use? I don't even know... Thanks

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  • APEX(Oracle Application Express)????~??????????????????????

    - by Yuichi.Hayashi
    APEX??? Oracle APEX??Oracle Database????Web???????????????? Web?????????????????????????????????????????????? Oracle Database???????????APEX????????? ???? ??????????????????????????????????????????????????????????????????????????? Oracle APEX???????JavaScript?AJAX?????????????????????????????????????????????????? ?? Oracle Application Express 4.0??????????? Oracle Database 10.2.0.3???????? Oracle Text???Oracle XML DB????????????? ?????? ??????????????????? ?????? ?????????????????????????????????????? ???????????????????????? ??????(???????) (2011?2??????????) ??????·?? ??????? ??????·??? ??????????? ?????????· ?????????????????????? ??????·??? ???????????????? ??????? (Dynamic Actions) Web???·??????????? ???????· ???????????

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  • Apache access.log interpretation

    - by Pantelis Sopasakis
    In the log file of apache (access.log) I find log entries like the following: 10.20.30.40 - - [18/Mar/2011:02:12:44 +0200] "GET /index.php HTTP/1.1" 404 505 "-" "Opera/9.80 (Windows NT 6.1; U; en) Presto/2.7.62 Version/11.01" Whose meaning is clear: The client with IP 10.20.30.40 applied a GET HTTP method on /index.php (that is to say http://mysite.org/index.php) receiving a status code 404 using Opera as client/browser. What I don't understand is entries like the following: 174.34.231.19 - - [18/Mar/2011:02:24:56 +0200] "GET http://www.siasatema.com HTTP/1.1" 200 469 "-" "Python-urllib/2.4" So here what I see is that someone (client with IP 174.34.231.19) accessed http://www.siasatema.com and got a 200 HTTP status code(?). It doesn't make sense to me... the only interpretation I can think of is that my apache server acts like proxy! Here are some other requests that don't have my site as destination... 187.35.50.61 - - [18/Mar/2011:01:28:20 +0200] "POST http://72.26.198.222:80/log/normal/ HTTP/1.0" 404 491 "-" "Octoshape-sua/1010120" 87.117.203.177 - - [18/Mar/2011:01:29:59 +0200] "CONNECT 64.12.244.203:80 HTTP/1.0" 405 556 "-" "-" 87.117.203.177 - - [18/Mar/2011:01:29:59 +0200] "open 64.12.244.203 80" 400 506 "-" "-" 87.117.203.177 - - [18/Mar/2011:01:30:04 +0200] "telnet 64.12.244.203 80" 400 506 "-" "-" 87.117.203.177 - - [18/Mar/2011:01:30:09 +0200] "64.12.244.203 80" 400 301 "-" "-" I believe that all these are related to some kind of attack or abuse of the server. Could someone explain to may what is going on and how to cope with this situation? Update 1: I disabled mod_proxy to make sure that I don't have an open proxy: # a2dismod proxy Where from I got the message: Module proxy already disabled I made sure that there is no file proxy.conf under $APACHE/mods-enabled. Finally, I set on my browser (Mozzila) my IP as a proxy and tried to access http://google.com. I was not redirected to google.com but instead my web page appeared. The same happened with trying to access http://a.b (!). So my server does not really work as a proxy since it does not forward the requests... But I think it would be better if somehow I could configure it to return a status code 403. Here is my apache configuration file: <VirtualHost *:80> ServerName mysite.org ServerAdmin webmaster@localhost DocumentRoot /var/www/ <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log LogLevel warn CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> </VirtualHost> Update 2: Using a block, I restrict the use of other methods than GET and POST... <Limit POST PUT CONNECT HEAD OPTIONS DELETE PATCH PROPFIND PROPPATCH MKCOL COPY MOVE LOCK UNLOCK> Order deny,allow Deny from all </Limit> <LimitExcept GET> Order deny,allow Deny from all </LimitExcept> Now methods other that GET are forbidden (403). My only question now is whether there is some trick to boot those how try to use my server as a proxy out...

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  • NGINX - CORS error affecting only Firefox

    - by wiherek
    this is an issue with Nginx that affects only firefox. I have this config: http://pastebin.com/q6Yeqxv9 upstream connect { server 127.0.0.1:8080; } server { server_name admin.example.com www.admin.example.com; listen 80; return 301 https://admin.example.com$request_uri; } server { listen 80; server_name ankieta.example.com www.ankieta.example.com; add_header Access-Control-Allow-Origin $http_origin; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, PATCH, DELETE'; add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Allow-Headers' 'Access-Control-Request-Method,Access-Control-Request-Headers,Cache,Pragma,Authorization,Accept,Accept-Encoding,Accept-Language,Host,Referer,Content-Length,Origin,DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; return 301 https://ankieta.example.com$request_uri; } server { server_name admin.example.com; listen 443 ssl; ssl_certificate /srv/ssl/14182263.pem; ssl_certificate_key /srv/ssl/admin_i_ankieta.example.com.key; ssl_protocols SSLv3 TLSv1; ssl_ciphers ALL:!aNULL:!ADH:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:+MEDIUM; location / { proxy_pass http://connect; } } server { server_name ankieta.example.com; listen 443 ssl; ssl_certificate /srv/ssl/14182263.pem; ssl_certificate_key /srv/ssl/admin_i_ankieta.example.com.key; ssl_protocols SSLv3 TLSv1; ssl_ciphers ALL:!aNULL:!ADH:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:+MEDIUM; root /srv/limesurvey; index index.php; add_header 'Access-Control-Allow-Origin' $http_origin; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, PATCH, DELETE'; add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Allow-Headers' 'Access-Control-Request-Method,Access-Control-Request-Headers,Cache,Pragma,Authorization,Accept,Accept-Encoding,Accept-Language,Host,Referer,Content-Length,Origin,DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; client_max_body_size 4M; location / { try_files $uri $uri/ /index.php?q=$uri&$args; } location ~ /*.php$ { fastcgi_split_path_info ^(.+\.php)(/.+)$; #NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini include fastcgi_params; fastcgi_param SCRIPT_FILENAME /srv/limesurvey$fastcgi_script_name; # fastcgi_param HTTPS $https; fastcgi_intercept_errors on; fastcgi_pass 127.0.0.1:9000; } location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ { expires max; log_not_found off; } } this is basically an AngularJS app and a PHP app (LimeSurvey), served under two different domains by the same webserver (Nginx). AngularJS is in fact served by ConnectJS, which is proxied to by Nginx (ConnectJS listens only on localhost). In Firefox console I get this: Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://ankieta.example.com/admin/remotecontrol. This can be fixed by moving the resource to the same domain or enabling CORS. which of course is annoying. Other browsers work fine (Chrome, IE). Any suggestions on this?

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  • Add keyboard languages to XP, Vista, and Windows 7

    - by Matthew Guay
    Do you regularly need to type in multiple languages in Windows?  Here we’ll show you the easy way to add and change input languages to your keyboard in XP, Vista, and Windows 7. Windows Vista and 7 come preinstalled with support for viewing a wide variety of languages, so adding an input language is fairly simply.  Adding an input language is slightly more difficult in XP, and requires installing additional files if you need an Asian or Complex script language.  First we show how to add an input language in Windows Vista and 7; it’s basically the same in both versions.  Then, we show how to add a language to XP, and also how to add Complex Script support.  Please note that this is only for adding an input language, which will allow you to type in the language you select.  This does not change your user interface language. Change keyboard language in Windows 7 and Vista It is fairly simple to add or change a keyboard language in Windows 7 or Vista.  In Windows 7, enter “keyboard language” in the Start menu search box, and select “Change keyboards or other input methods”. In Windows Vista, open Control Panel and enter “input language” in the search box and select “Change keyboards or other input methods”.  This also works in Windows 7. Now, click Change Keyboards to add another keyboard language or change your default one. Our default input language is US English, and our default keyboard is the US keyboard layout.  Click Add to insert another input language while still leaving your default input language installed. Here we selected the standard Thai keyboard language (Thai Kedmanee), but you can select any language you want.  Windows offers almost any language you can imagine, so just look for the language you want, select it, and click Ok. Alternately, if you want, you can click Preview to see your layout choice before accepting it.  This is only the default characters, not ones that will be activated with Shift or other keys (many Asian languages use many more characters than English, and require the use of Shift and other keys to access them all).  Once your finished previewing, click close and then press Ok on the previous dialog. Now you will see both of your keyboard languages in the Installed services box.  You can click Add to go back and get more, or move your selected language up or down (to change its priority), or simply click Apply to add the new language. Also, you can now change the default input language from the top menu.  This is the language that your keyboard will start with when you boot your computer.  So, if you mainly use English but also use another language, usually it is best to leave English as your default input language. Once you’ve pressed Apply or Ok, you will see a new icon beside your system tray with the initials of your default input language. If you click it, you can switch between input languages.  Alternately you can switch input languages by pressing Alt+Shift on your keyboard. Some complex languages, such as Chinese, may have extra buttons to change input modes to accommodate their large alphabet. If you would like to change the keyboard shortcut for changing languages, go back to the Input Languages dialog, and select the “Advanced Key Settings” tab.  Here you can change settings for Caps Lock and change or add key sequences to change between languages. Also, the On-Screen keyboard will display the correct keyboard language (here the keyboard is displaying Thai), which can be a helpful reference if your physical keyboard doesn’t have your preferred input language printed on it.  To open this, simply enter “On-Screen keyboard” in the start menu search, or click All Programs>Accessories>On-Screen keyboard. Change keyboard language in Windows XP The process for changing the keyboard language in Windows XP is slightly different.  Open Control Panel, and select “Date, Time, Language, and Regional Options”.   Select “Add other languages”. Now, click Details to add another language.  XP does not include support for Asian and complex languages by default, so if you need to add one of those languages we have details for that below. Click Add to add an input language. Select your desired language from the list, and choose your desired keyboard layout if your language offers multiple layouts.  Here we selected Canadian French with the default layout. Now you will see both of your keyboard languages in the Installed services box.  You can click Add to go back and add more, or move your selected language up or down (to change its priority), or simply click Apply to add the new language. Once you’ve pressed Apply or Ok, you will see a new icon beside your system tray with the initials of your default input language. If you click it, you can switch between input languages.  Alternately you can switch input languages by pressing Alt+Shift on your keyboard. If you would like to change the keyboard shortcut for changing languages, go back to the Input Languages dialog, and click the “Key Settings” button on the bottom of the dialog.  Here you can change settings for Caps Lock and change or add key sequences to change between languages. Add support to XP for Asian and Complex script languages Windows XP does not include support for Asian and Complex script languages by default, but you can easily add them to your computer.  This is useful if you wish to type in one of these languages, or simply want to read text written in these languages, since XP will not display these languages correctly if they are not installed.  If you wish to install Chinese, Japanese, and/or Korean, check the “Install files for East Asian languages” box.  Or, if you need to install a complex script language (including Arabic, Armenian, Georgian, Hebrew, the Indic languages, Thai, and Vietnamese), check the “Install files for complex script and right-to-left languages” box.   Choosing either of these options will open a prompt reminding you that this option will take up more disk space.  Support for complex languages will require around 10Mb of hard drive space, but East Asian language support may require 230 Mb or more free disk space.  Click Ok, and click apply to install your language files. You may have to insert your XP CD into your CD drive to install these files.  Insert the disk, and then click Ok. Windows will automatically copy the files, including fonts for these languages… …and then will ask you to reboot your computer to finalize the settings.  Click Yes, and then reopen the “Add other languages” dialog when your computer is rebooted, and add a language as before.     Now you can add Complex and/or Asian languages to XP, just as above.  Here is the XP taskbar language selector with Thai installed. Conclusion Unfortunately we haven’t found a way to add Asian and complex languages in XP without having an XP disc. If you know of a way, let us know in the comments. (No downloading the XP disc from torrent site answers please) Adding an input language is very important for bilingual individuals, and can also be useful if you simply need to occasionally view Asian or Complex languages in XP.  And by following the correct instructions for your version of Windows, it should be very easy to add, change, and remove input languages. Similar Articles Productive Geek Tips Show Keyboard Shortcut Access Keys in Windows VistaKeyboard Ninja: 21 Keyboard Shortcut ArticlesAnother Desktop Cube for Windows XP/VistaThe "Up" Keyboard Shortcut for Windows 7 or Vista ExplorerWhat is ctfmon.exe And Why Is It Running? TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Make your Joomla & Drupal Sites Mobile with OSMOBI Integrate Twitter and Delicious and Make Life Easier Design Your Web Pages Using the Golden Ratio Worldwide Growth of the Internet How to Find Your Mac Address Use My TextTools to Edit and Organize Text

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  • CodePlex Daily Summary for Monday, February 22, 2010

    CodePlex Daily Summary for Monday, February 22, 2010New ProjectsAVDB: System to keep track of orders and the inventory of televisions, DVDs, VCRs etcBooky: Booky is an online Bookmark Management Tool. Gear Up for Lord of the Rings Online (lotro): Windows utility for checking what your LOTRO character currently has equipped and figuring out gear you should get to improve your stats.GotSharp Extensions: GotSharp Extensions is a set of helpful classes and extension methods that can make your coding experience easier and cleaner. Halfwit: A minimalist WPF Twitter client.HOA Starter Kit: A community subdivision website starter kit. First draft.Lua For Irony: Project to define the Lua language using the Irony (http://irony.codeplex.com/) development kit. This work is based heavily on the work done for V...MimeCloud: Scalable .NET Digital Asset & Media Management: MimeCloud is a scalable digital asset library & media management toolset. Founded by Alex Norcliffe and Peter Miller Written by people who have b...Parallel Mandelbrot Set solver: Solving the Mandelbrot set using the Parallel class in .NET 4.0. Showing the resulting image in a WPF application. The solution file requires VS 2010.Pomogad - Pomodoro Windows Gadget: Você usa Pomodoro Technique? Não sabe o que é? Veja aqui http://www.pomodorotechnique.com Agora que você já sabe, que tal usar essa técnica? E p...PostCrap - flyweight .NET AOP post compiler: PostCrap is a flyweight attribute based aspect injection .NET post compiler It is written in C# and uses Mono.Cecil to modify assemblies and injec...Software + Service Reference Demo Kit: MS China Developer and Platform Evangelism team created an End-2-End demo for Software + Service. Yet Another SharePoint Tool: YEAST provides you with a simple to integrate approach to generating SharePoint solution packages as part of a Visual Studio project. Zen Coding Visual Studio Plugin: Zen Coding for Visual Studio is plugin for HTML and CSS hi-speed codingNew Releases.Net MSBuild Google Closure Compiler Task: .Net MSBuild Google Closure Compiler Task 1.1: - Corrected issue with regular expression source file and renamingdotNails: dotNails_0.5.9: NOTE - the latest source code has been moved to google code to take advantage of Mercurial source control - http://code.google.com/p/dotnails/sourc...EasyWFUnit: EasyWFUnit-2.2: Release 2.2 of EasyWFUnit, an extension library to support unit testing of Windows Workflow, includes a revised WinForm GUI Test Builder that utili...Fluent Ribbon Control Suite: Fluent Ribbon Control Suite BETA2 (for .NET 4.0RC): Includes Fluent.dll (with .pdb and .xml) and test application compiled with .NET 4.0 RC.FolderSize: FolderSize.Win32.1.0.3.0: FolderSize.Win32.1.0.3.0 A simple utility intended to be used to scan harddrives for the folders that take most place and display this to the user...Fusion Charts Free for SharePoint: 1.3: Fix release for issue #11833 : Feature Must Be Activated on Root of Web Application.GotSharp Extensions: 1.0: First release, containing only a few extension methods for the System.String and System.IO.Stream classes, and a Range utility class.Jeremy's Experimental Repository: FluentValidation with IoC Sample: Sample code for the blog post Using FluentValidation with an IoC containerMiniTwitter: 1.08: MiniTwitter 1.08 更新内容 修正 自動更新が CodePlex の変更で動いていなかった問題を修正 自動更新に失敗すると落ちるバグを修正 通知領域アイコン右クリックで表示されるメニューが消えないバグを修正 変更 ハッシュタグの抽出条件を変更 API のエンドポイ...MSTS Editors & Tools: Simis Editor v0.3: Simis Editor v0.3 Enabled Edit > Undo and Edit > Redo. Undoing/redoing back to last saved state is identified as saved (no prompt on exit, etc.)....Parallel Mandelbrot Set solver: Alpha 1: First releaseParallelTasks: ParallelTasks 2.0 beta1: ParallelTasks 2.0 is a total re-write of the original version. Featuring improved performance and stability and a more consistent API.Personal Expense Tracker: Personal Expense Tracker v0.1 beta: This is the first beta release. Please provide me with your feedback.PostCrap - flyweight .NET AOP post compiler: PostCrap 1.0 AOP source and binaries: PostCrap 1.0 source and binaries (the unit test project contains sample interceptor attributes for exception handling & logging)Protoforma | Tactica Adversa: Skilful 0.1.3.276: AlphaRawr: Rawr 2.3.10: - More improvements to the default filters - Further improvement on avoiding useless gem swaps from the Optimizer. - Normal/Heroic ICC items shou...Reusable Library: v1.0.2: A collection of reusable abstractions for enterprise application developer.Sem.Sync: 2010-02-21 - Synchronization Manager - Beta: This release is not tested very well, so you should use this version only to evaluate new features. - Changed way of handling source-ids in order ...Survey - web survey & form engine: Survey 1.1.0: Release Survey v. 1.1.0.0 Major changes: - layout & graphics completely overhauled - several technical changes & repairs (e.g. matrix question iss...Yet Another SharePoint Tool: Version 1: Version 1Zeta Resource Editor: Release 2010-02-21: New source code release.Most Popular ProjectsWBFS ManagerRawrAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)Image Resizer Powertoy Clone for WindowsASP.NETDotNetNuke® Community EditionMicrosoft SQL Server Community & SamplesMost Active ProjectsDinnerNow.netRawrBlogEngine.NETNB_Store - Free DotNetNuke Ecommerce Catalog ModuleSharpyjQuery Library for SharePoint Web ServicesSharePoint ContribInfoServicepatterns & practices – Enterprise LibraryPHPExcel

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