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Articles indexed Tuesday October 9 2012

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• golang dynamically parsing files

  - by Brian Voelker

  For parsing files i have setup a variable for template.ParseFiles and i currently have to manually set each file. Two things: How would i be able to walk through a main folder and a multitude of subfolders and automatically add them to ParseFiles so i dont have to manually add each file individually? How would i be able to call a file with the same name in a subfolder because currently I get an error at runtime if i add same name file in ParseFiles. var templates = template.Must(template.ParseFiles( "index.html", // main file "subfolder/index.html" // subfolder with same filename errors on runtime "includes/header.html", "includes/footer.html", )) func main() { // Walk and ParseFiles filepath.Walk("files", func(path string, info os.FileInfo, err error) { if !info.IsDir() { // Add path to ParseFiles } return }) http.HandleFunc("/", home) http.ListenAndServe(":8080", nil) } func home(w http.ResponseWriter, r *http.Request) { render(w, "index.html") } func render(w http.ResponseWriter, tmpl string) { err := templates.ExecuteTemplate(w, tmpl, nil) if err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) } }

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• Creating a page selector with JSP/JSTL

  - by zakSyed

  I am working on a project where I am required to build a page somewhat similar to the one you see when you visit a website like blockbuster. When you click on browse more you are taken to a page with a bar on top with different page numbers and a drop down to select the number of pages you want to view on that page. I want to include a feature like that on my page but I am not sure where to start. In my page I have list of 200 items which I want to display page by page. I was suggested to use custom tags, but is there a more simpler or efficient way to create that functionality. My web application uses Spring MVC framework and is coded entirely in Java. Any suggestions will be appreciated.

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• How can I render a Batik SVG Java object in the view portion of a Spring MVC application?

  - by mattblang

  I am creating and manipulating a SVGOMDocument object in a controller method. How can I render this object in a JSP view? I get very close with the following controller method and <object> tag. @RequestMapping(value = "/seal") public ResponseEntity<SVGDocument> createSeal() throws IOException { InputStream file = new ClassPathResource("seal.svg").getInputStream(); String parser = XMLResourceDescriptor.getXMLParserClassName(); SAXSVGDocumentFactory factory = new SAXSVGDocumentFactory(parser); SVGDocument svg = (SVGDocument) factory.createDocument("http://www.w3.org/2000/svg", file); svg.getElementById("name").getFirstChild().setNodeValue("a test name"); return new ResponseEntity<SVGDocument>(svg, HttpStatus.OK); } <object data="/seal" type="image/svg+xml"></object> This displays a string of XML that is a SVG. The string is in quotes with every XML quote escaped.

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• Debugging Objective C JNI code

  - by thatidiotguy

  Here is the situation: I have a client's java project open in eclipse. It uses a JNI library created by an Xcode Objective C project. Is there any good way for me to debug the C code from eclipse when I execute the Java code? Obviously eclipse's default debugger cannot step into the jni library file and we lose the thread (thread meaning investigative thread here, not programming thread). Any advice or input is appreciated as the code base is large enough that following the client's code will be radically faster than other options. Thanks. EDIT: It should be noted that the reason that the jni library is written in Objective-C is because it is integrating with Mac OSX. It is using the Cocoa framework to integrate with the Apple speech api.

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• Best way to limit results in MySQL with user subcategories

  - by JM4

  I am trying to essentially solve for the following: 1) Find all users in the system who ONLY have programID 1. 2) Find all users in the system who have programID 1 AND any other active program. My tables structures (in very simple terms are as follows): users userID | Name ================ 1 | John Smith 2 | Lewis Black 3 | Mickey Mantle 4 | Babe Ruth 5 | Tommy Bahama plans ID | userID | plan | status --------------------------- 1 | 1 | 1 | 1 2 | 1 | 2 | 1 3 | 1 | 3 | 1 4 | 2 | 1 | 1 5 | 2 | 3 | 1 6 | 3 | 1 | 0 7 | 3 | 2 | 1 8 | 3 | 3 | 1 9 | 3 | 4 | 1 10 | 4 | 2 | 1 11 | 4 | 4 | 1 12 | 5 | 1 | 1 I know I can easily find all members with a specific plan with something like the following: SELECT * FROM users a JOIN plans b ON (a.userID = b.userID) WHERE b.plan = 1 AND b.status = 1 but this will only tell me which users have an 'active' plan 1. How can I tell who ONLY has plan 1 (in this case only userID 5) and how to tell who has plan 1 AND any other active plan? Update: This is not to get a count, I will actually need the original member information, including all the plans they have so a COUNT(*) response may not be what I'm trying to achieve.

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• GDL Presents: Make Web Magic | Part II

  GDL Presents: Make Web Magic | Part II Using the latest open web technologies, the developers creating some of the most inspired Chrome Experiments showcase their latest web experiments and discuss how they are making the web faster, more fun, and open in this 3-episode hangout. Host: Paul Irish, Developer Advocate, Chrome Guest: Mark Danks From: GoogleDevelopers Views: 2 0 ratings Time: 17:41 More in Science & Technology

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• Dark Visual Experience in Visual Studio 2012

  - by Jalpesh P. Vadgama

  I have written whole series related to Visual Studio 2012 features and this post will also be part of same series.You can get all my post related to visual studio from the following link. Visual Studio 2012 feature series Before some days I was searching something and found a great way to change the visual experience of visual studio 2012. I found that there are two type of themes available in visual studio 2012 light and dark under Tools->Option-> General environment value. This is one of newest feature I have found in visual studio 2012. Read More >>

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• When is my View too smart?

  - by Kyle Burns

  In this posting, I will discuss the motivation behind keeping View code as thin as possible when using patterns such as MVC, MVVM, and MVP.  Once the motivation is identified, I will examine some ways to determine whether a View contains logic that belongs in another part of the application.  While the concepts that I will discuss are applicable to most any pattern which favors a thin View, any concrete examples that I present will center on ASP.NET MVC. Design patterns that include a Model, a View, and other components such as a Controller, ViewModel, or Presenter are not new to application development.  These patterns have, in fact, been around since the early days of building applications with graphical interfaces.  The reason that these patterns emerged is simple – the code running closest to the user tends to be littered with logic and library calls that center around implementation details of showing and manipulating user interface widgets and when this type of code is interspersed with application domain logic it becomes difficult to understand and much more difficult to adequately test.  By removing domain logic from the View, we ensure that the View has a single responsibility of drawing the screen which, in turn, makes our application easier to understand and maintain. I was recently asked to take a look at an ASP.NET MVC View because the developer reviewing it thought that it possibly had too much going on in the view.  I looked at the .CSHTML file and the first thing that occurred to me was that it began with 40 lines of code declaring member variables and performing the necessary calculations to populate these variables, which were later either output directly to the page or used to control some conditional rendering action (such as adding a class name to an HTML element or not rendering another element at all).  This exhibited both of what I consider the primary heuristics (or code smells) indicating that the View is too smart: Member variables – in general, variables in View code are an indication that the Model to which the View is being bound is not sufficient for the needs of the View and that the View has had to augment that Model.  Notable exceptions to this guideline include variables used to hold information specifically related to rendering (such as a dynamically determined CSS class name or the depth within a recursive structure for indentation purposes) and variables which are used to facilitate looping through collections while binding. Arithmetic – as with member variables, the presence of arithmetic operators within View code are an indication that the Model servicing the View is insufficient for its needs.  For example, if the Model represents a line item in a sales order, it might seem perfectly natural to “normalize” the Model by storing the quantity and unit price in the Model and multiply these within the View to show the line total.  While this does seem natural, it introduces a business rule to the View code and makes it impossible to test that the rounding of the result meets the requirement of the business without executing the View.  Within View code, arithmetic should only be used for activities such as incrementing loop counters and calculating element widths. In addition to the two characteristics of a “Smart View” that I’ve discussed already, this View also exhibited another heuristic that commonly indicates to me the need to refactor a View and make it a bit less smart.  That characteristic is the existence of Boolean logic that either does not work directly with properties of the Model or works with too many properties of the Model.  Consider the following code and consider how logic that does not work directly with properties of the Model is just another form of the “member variable” heuristic covered earlier: @if(DateTime.Now.Hour < 12) {     <div>Good Morning!</div> } else {     <div>Greetings</div> } This code performs business logic to determine whether it is morning.  A possible refactoring would be to add an IsMorning property to the Model, but in this particular case there is enough similarity between the branches that the entire branching structure could be collapsed by adding a Greeting property to the Model and using it similarly to the following: <div>@Model.Greeting</div> Now let’s look at some complex logic around multiple Model properties: @if (ModelPageNumber + Model.NumbersToDisplay == Model.PageCount         || (Model.PageCount != Model.CurrentPage             && !Model.DisplayValues.Contains(Model.PageCount))) {     <div>There's more to see!</div> } In this scenario, not only is the View code difficult to read (you shouldn’t have to play “human compiler” to determine the purpose of the code), but it also complex enough to be at risk for logical errors that cannot be detected without executing the View.  Conditional logic that requires more than a single logical operator should be looked at more closely to determine whether the condition should be evaluated elsewhere and exposed as a single property of the Model.  Moving the logic above outside of the View and exposing a new Model property would simplify the View code to: @if(Model.HasMoreToSee) {     <div>There’s more to see!</div> } In this posting I have briefly discussed some of the more prominent heuristics that indicate a need to push code from the View into other pieces of the application.  You should now be able to recognize these symptoms when building or maintaining Views (or the Models that support them) in your applications.

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• Getting Started with jqChart for ASP.NET Web Forms

  - by jqChart

  Official Site | Samples | Download | Documentation | Forum | Twitter Introduction jqChart takes advantages of HTML5 Canvas to deliver high performance client-side charts and graphs across browsers (IE 6+, Firefox, Chrome, Opera, Safari) and devices, including iOS and Android mobile devices. Some of the key features are: High performance rendering. Animaitons. Scrolling/Zoooming. Support for unlimited number of data series and data points. Support for unlimited number of chart axes. True DateTime Axis. Logarithmic and Reversed axis scale. Large set of chart types - Bar, Column, Pie, Line, Spline, Area, Scatter, Bubble, Radar, Polar. Financial Charts - Stock Chart and Candlestick Chart. The different chart types can be easily combined.  System Requirements Browser Support jqChart supports all major browsers: Internet Explorer - 6+ Firefox Google Chrome Opera Safari jQuery version support jQuery JavaScript framework is required. We recommend using the latest official stable version of the jQuery library. Visual Studio Support jqChart for ASP.NET does not require using Visual Studio. You can use your favourite code editor. Still, the product has been tested with several versions of Visual Studio .NET and you can find the list of supported versions below: Visual Studio 2008 Visual Studio 2010 Visual Studio 2012 ASP.NET Web Forms support Supported version - ASP.NET Web Forms 3.5, 4.0 and 4.5 Installation Download and unzip the contents of the archive to any convenient location. The package contains the following folders: [bin] - Contains the assembly DLLs of the product (JQChart.Web.dll) for WebForms 3.5, 4.0 and 4.5. This is the assembly that you can reference directly in your web project (or better yet, add it to your ToolBox and then drag & drop it from there). [js] - The javascript files of jqChart and jqRangeSlider (and the needed libraries). You need to include them in your ASPX page, in order to gain the client side functionality of the chart. The first file is "jquery-1.5.1.min.js" - this is the official jQuery library. jqChart is built upon jQuery library version 1.4.3. The second file you need is the "excanvas.js" javascript file. It is used from the versions of IE, which dosn't support canvas graphics. The third is the jqChart javascript code itself, located in "jquery.jqChart.min.js". The last one is the jqRangeSlider javascript, located in "jquery.jqRangeSlider.min.js". It is used when the chart zooming is enabled. [css] - Contains the Css files that the jqChart and the jqRangeSlider need. [samples] - Contains some examples that use the jqChart. For full list of samples plese visit - jqChart for ASP.NET Samples. [themes] - Contains the themes shipped with the products. It is used from the jqRangeSlider. Since jqRangeSlider supports jQuery UI Themeroller, any theme compatible with jQuery UI ThemeRoller will work for jqRangeSlider as well. You can download any additional themes directly from jQuery UI's ThemeRoller site available here: http://jqueryui.com/themeroller/ or reference them from Microsoft's / Google's CDN. <link rel="stylesheet" type="text/css" media="screen" href="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.21/themes/smoothness/jquery-ui.css" /> The final result you will have in an ASPX page containing jqChart would be something similar to that (assuming you have copied the [js] to the Script folder and [css] to Content folder of your ASP.NET site respectively). <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="samples_cs.Default" %> <%@ Register Assembly="JQChart.Web" Namespace="JQChart.Web.UI.WebControls" TagPrefix="jqChart" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html > <head runat="server"> <title>jqChart ASP.NET Sample</title> <link rel="stylesheet" type="text/css" href="~/Content/jquery.jqChart.css" /> <link rel="stylesheet" type="text/css" href="~/Content/jquery.jqRangeSlider.css" /> <link rel="stylesheet" type="text/css" href="~/Content/themes/smoothness/jquery-ui-1.8.21.css" /> <script src="<% = ResolveUrl("~/Scripts/jquery-1.5.1.min.js") %>" type="text/javascript"></script> <script src="<% = ResolveUrl("~/Scripts/jquery.jqRangeSlider.min.js") %>" type="text/javascript"></script> <script src="<% = ResolveUrl("~/Scripts/jquery.jqChart.min.js") %>" type="text/javascript"></script> <!--[if IE]><script lang="javascript" type="text/javascript" src="<% = ResolveUrl("~/Scripts/excanvas.js") %>"></script><![endif]--> </head> <body> <form id="form1" runat="server"> <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetData" TypeName="SamplesBrowser.Models.ChartData"></asp:ObjectDataSource> <jqChart:Chart ID="Chart1" Width="500px" Height="300px" runat="server" DataSourceID="ObjectDataSource1"> <Title Text="Chart Title"></Title> <Animation Enabled="True" Duration="00:00:01" /> <Axes> <jqChart:CategoryAxis Location="Bottom" ZoomEnabled="true"> </jqChart:CategoryAxis> </Axes> <Series> <jqChart:ColumnSeries XValuesField="Label" YValuesField="Value1" Title="Column"> </jqChart:ColumnSeries> <jqChart:LineSeries XValuesField="Label" YValuesField="Value2" Title="Line"> </jqChart:LineSeries> </Series> </jqChart:Chart> </form> </body> </html>   Official Site | Samples | Download | Documentation | Forum | Twitter

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• Glume amuzante cu copii

  - by interesante

  Tatal chel; o fetita o intreaba pe mama sa: - Mama, de ce tata e asa de chel? - Deoarece are multa minte si i-a cazut parul. - Dar tu de ce ai asa de mult par in cap? - Mananca si taci!Era odata un tanar care cand era mic vroia sa se faca un "mare" scriitor. Cand i s-a cerut sa defineasca "mare" a spus: "Vreau sa scriu chestii pe care sa le citeasca toata lumea, chestii la care lumea sa reactioneze emotional, lucruri care sa-i faca sa strige, sa planga, sa urle, sa se zbata de durere, disperare si manie!" Acum lucreaza pentru Microsoft si scrie mesaje de eroare...Mai multa distractie pe un website cu jocuri flash care sa te captiveze.Un barbat zbura cu un balon cu aer cald si la un moment dat si-a dat seama ca s-a ratacit. A coborat pana aproape de pamant si a zarit o femeie pe o pajiste. Apropiindu-se de ea, el i-a strigat: -Fii amabila, poti sa ma ajuti? Am promis unui prieten ca ma intalnesc cu el, dar nu mai stiu unde ma aflu. Femeia i-a raspuns: -Te afli intr-un balon cu aer cald, la vreo 10 metri inaltime. Te gasesti intre 40 si 41 grade latitudine nord, si intre 59 si 60 de grade logitudine vest. -Ei, probabil esti inginera de profesie! spuse omul din balon. -Asa este, raspunse femeia, dar de unde stii? -Pai tot ce mi-ai spus este corect din punct de vedere tehnic, dar tot n-am idee ce-as putea face cu informatiile de la tine si sunt tot in ceata. Sa fiu sincer, nu m-ai ajutat deloc. Ba chiar pot spune ca m-ai tinut pe loc degeaba. Atunci femeia i-a raspuns: -Dar tu trebuie sa fii director! -Asa este, raspunse barbatul, dar de unde stii? -Pai nu stii unde te afli si nici incotro te indrepti. Te-ai ridicat la inaltime profitand de o flama care a incins situatia. Ai facut o promisiune pe care nu stii cum ai sa ti-o tii si te astepti ca oamenii de sub tine sa-ti rezolve problema. Adevarul este ca te afli exact in locul unde te aflai cand am inceput discutia, acum 1 minut, dar brusc constati acum ca asta este din vina mea.

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• Step-by-Step: Implementing Hyper-V Network Virtualization with Windows Server 2012

  - by KeithMayer

  True network and virtual machine portability - that's the ultimate goal of Hyper-V Network Virtualization - allowing you, as an IT Pro, to align changing business needs with the best physical resource locations to run your VMs and network services - easily, without the sweeping network, router, switch, firewall and DNS changes with which we'd traditionally be plagued when merely attempting the feat of relocating VMs to a new rack, subnet or data center ... WOW!

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• Exam 70-480 Study Material: Programming in HTML5 with JavaScript and CSS3

  - by Stacy Vicknair

  Here’s a list of sources of information for the different elements that comprise the 70-480 exam: General Resources http://www.w3schools.com (As pointed out in David Pallmann’s blog some of this content is unverified, but it is a decent source of information. For more about when it isn’t decent, see http://www.w3fools.com ) http://www.bloggedbychris.com/2012/09/19/microsoft-exam-70-480-study-guide/ (A guy who did a lot of what I did already, sadly I found this halfway through finishing my resources list. This list is expertly put together so I would recommend checking it out.) http://davidpallmann.blogspot.com/2012/08/microsoft-certification-exam-70-480.html http://pluralsight.com/training/Courses (Yes, this isn’t free, but if you look at the course listing there is an entire section on HTML5, CSS3 and Javascript. You can always try the trial!)   Some of the links I put below will overlap with the other resources above, but I tried to find explanations that looked beneficial to me on links outside those already mentioned.   Test Breakdown Implement and Manipulate Document Structures and Objects (24%) Create the document structure. o This objective may include but is not limited to: structure the UI by using semantic markup, including for search engines and screen readers (Section, Article, Nav, Header, Footer, and Aside); create a layout container in HTML http://www.w3schools.com/html/html5_new_elements.asp   Write code that interacts with UI controls. o This objective may include but is not limited to: programmatically add and modify HTML elements; implement media controls; implement HTML5 canvas and SVG graphics http://www.w3schools.com/html/html5_canvas.asp http://www.w3schools.com/html/html5_svg.asp   Apply styling to HTML elements programmatically. o This objective may include but is not limited to: change the location of an element; apply a transform; show and hide elements   Implement HTML5 APIs. o This objective may include but is not limited to: implement storage APIs, AppCache API, and Geolocation API http://www.w3schools.com/html/html5_geolocation.asp http://www.w3schools.com/html/html5_webstorage.asp http://www.w3schools.com/html/html5_app_cache.asp   Establish the scope of objects and variables. o This objective may include but is not limited to: define the lifetime of variables; keep objects out of the global namespace; use the “this” keyword to reference an object that fired an event; scope variables locally and globally http://robertnyman.com/2008/10/09/explaining-javascript-scope-and-closures/ http://www.quirksmode.org/js/this.html   Create and implement objects and methods. o This objective may include but is not limited to: implement native objects; create custom objects and custom properties for native objects using prototypes and functions; inherit from an object; implement native methods and create custom methods http://www.javascriptkit.com/javatutors/object.shtml http://www.crockford.com/javascript/inheritance.html http://stackoverflow.com/questions/1635116/javascript-class-method-vs-class-prototype-method http://www.javascriptkit.com/javatutors/proto.shtml     Implement Program Flow (25%) Implement program flow. o This objective may include but is not limited to: iterate across collections and array items; manage program decisions by using switch statements, if/then, and operators; evaluate expressions http://www.javascriptkit.com/jsref/looping.shtml http://www.javascriptkit.com/javatutors/varshort.shtml http://www.javascriptkit.com/javatutors/switch.shtml   Raise and handle an event. o This objective may include but is not limited to: handle common events exposed by DOM (OnBlur, OnFocus, OnClick); declare and handle bubbled events; handle an event by using an anonymous function http://dev.w3.org/2006/webapi/DOM-Level-3-Events/html/DOM3-Events.html http://javascript.info/tutorial/bubbling-and-capturing   Implement exception handling. o This objective may include but is not limited to: set and respond to error codes; throw an exception; request for null checks; implement try-catch-finally blocks http://www.javascriptkit.com/javatutors/trycatch.shtml   Implement a callback. o This objective may include but is not limited to: receive messages from the HTML5 WebSocket API; use jQuery to make an AJAX call; wire up an event; implement a callback by using anonymous functions; handle the “this” pointer http://www.w3.org/TR/2011/WD-websockets-20110419/ http://www.html5rocks.com/en/tutorials/websockets/basics/ http://api.jquery.com/jQuery.ajax/   Create a web worker process. o This objective may include but is not limited to: start and stop a web worker; pass data to a web worker; configure timeouts and intervals on the web worker; register an event listener for the web worker; limitations of a web worker https://developer.mozilla.org/en-US/docs/DOM/Using_web_workers http://www.html5rocks.com/en/tutorials/workers/basics/   Access and Secure Data (26%) Validate user input by using HTML5 elements. o This objective may include but is not limited to: choose the appropriate controls based on requirements; implement HTML input types and content attributes (for example, required) to collect user input http://diveintohtml5.info/forms.html   Validate user input by using JavaScript. o This objective may include but is not limited to: evaluate a regular expression to validate the input format; validate that you are getting the right kind of data type by using built-in functions; prevent code injection http://www.regular-expressions.info/javascript.html http://msdn.microsoft.com/en-us/library/66ztdbe6(v=vs.94).aspx https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/typeof http://blog.stackoverflow.com/2008/06/safe-html-and-xss/ http://stackoverflow.com/questions/942011/how-to-prevent-javascript-injection-attacks-within-user-generated-html   Consume data. o This objective may include but is not limited to: consume JSON and XML data; retrieve data by using web services; load data or get data from other sources by using XMLHTTPRequest http://www.erichynds.com/jquery/working-with-xml-jquery-and-javascript/ http://www.webdevstuff.com/86/javascript-xmlhttprequest-object.html http://www.json.org/ http://stackoverflow.com/questions/4935632/how-to-parse-json-in-javascript   Serialize, deserialize, and transmit data. o This objective may include but is not limited to: binary data; text data (JSON, XML); implement the jQuery serialize method; Form.Submit; parse data; send data by using XMLHTTPRequest; sanitize input by using URI/form encoding http://api.jquery.com/serialize/ http://www.javascript-coder.com/javascript-form/javascript-form-submit.phtml http://stackoverflow.com/questions/327685/is-there-a-way-to-read-binary-data-into-javascript https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/encodeURI     Use CSS3 in Applications (25%) Style HTML text properties. o This objective may include but is not limited to: apply styles to text appearance (color, bold, italics); apply styles to text font (WOFF and @font-face, size); apply styles to text alignment, spacing, and indentation; apply styles to text hyphenation; apply styles for a text drop shadow http://www.w3schools.com/css/css_text.asp http://www.w3schools.com/css/css_font.asp http://nicewebtype.com/notes/2009/10/30/how-to-use-css-font-face/ http://webdesign.about.com/od/beginningcss/p/aacss5text.htm http://www.w3.org/TR/css3-text/ http://www.css3.info/preview/box-shadow/   Style HTML box properties. o This objective may include but is not limited to: apply styles to alter appearance attributes (size, border and rounding border corners, outline, padding, margin); apply styles to alter graphic effects (transparency, opacity, background image, gradients, shadow, clipping); apply styles to establish and change an element’s position (static, relative, absolute, fixed) http://net.tutsplus.com/tutorials/html-css-techniques/10-css3-properties-you-need-to-be-familiar-with/ http://www.w3schools.com/css/css_image_transparency.asp http://www.w3schools.com/cssref/pr_background-image.asp http://ie.microsoft.com/testdrive/graphics/cssgradientbackgroundmaker/default.html http://www.w3.org/TR/CSS21/visufx.html http://www.barelyfitz.com/screencast/html-training/css/positioning/ http://davidwalsh.name/css-fixed-position   Create a flexible content layout. o This objective may include but is not limited to: implement a layout using a flexible box model; implement a layout using multi-column; implement a layout using position floating and exclusions; implement a layout using grid alignment; implement a layout using regions, grouping, and nesting http://www.html5rocks.com/en/tutorials/flexbox/quick/ http://www.css3.info/preview/multi-column-layout/ http://msdn.microsoft.com/en-us/library/ie/hh673558(v=vs.85).aspx http://dev.w3.org/csswg/css3-grid-layout/ http://dev.w3.org/csswg/css3-regions/   Create an animated and adaptive UI. o This objective may include but is not limited to: animate objects by applying CSS transitions; apply 3-D and 2-D transformations; adjust UI based on media queries (device adaptations for output formats, displays, and representations); hide or disable controls http://www.bloggedbychris.com/2012/09/19/microsoft-exam-70-480-study-guide/   Find elements by using CSS selectors and jQuery. o This objective may include but is not limited to: choose the correct selector to reference an element; define element, style, and attribute selectors; find elements by using pseudo-elements and pseudo-classes (for example, :before, :first-line, :first-letter, :target, :lang, :checked, :first-child) http://www.bloggedbychris.com/2012/09/19/microsoft-exam-70-480-study-guide/   Structure a CSS file by using CSS selectors. o This objective may include but is not limited to: reference elements correctly; implement inheritance; override inheritance by using !important; style an element based on pseudo-elements and pseudo-classes (for example, :before, :first-line, :first-letter, :target, :lang, :checked, :first-child) http://www.bloggedbychris.com/2012/09/19/microsoft-exam-70-480-study-guide/   Technorati Tags: 70-480,CSS3,HTML5,HTML,CSS,JavaScript,Certification

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• Pizza and IntelliTrace at NextGenUG on 16 and 23 October 2012

  - by Tarun Arora

  Free Pizza and a session on diagnosing Production bugs using IntelliTrace. I’ll be presenting a session at the Next Gen User Group and you are more than welcome to join in, 16th October at Oxford – http://www.nxtgenug.net/ViewEvent.aspx?EventID=540  23rd October at Birmingham – http://www.nxtgenug.net/ViewEvent.aspx?EventID=524  I’ll be showing off the how IntelliTrace stand alone collector and Visual Studio stand alone profiler can help. See you there

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• Setting XSL-FO XML Schema in Visual Studio

  - by Lukasz Kurylo

  I'm playing lately with an XSL-FO for generating a pdf documents. XSL-FO has a long list of available tags and attributes, which for a new guy who want to create a simple document is a nightmare to find a proper one. Fortunatelly we can set an schema for XSL-FO, so will result in acquire a full intellisense in VS. For a simple *.fo file, we can set the path to the schema directly in file: <?xml version="1.0" encoding="utf-8"?> <fo:root       xmlns:fo="http://www.w3.org/1999/XSL/Format"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation=" http://www.w3.org/1999/XSL/Format http://www.xmlblueprint.com/documents/fop.xsd"> ...   We can of course use the build in VS XML Schemas selector. To use it, we must copy the schema file to the Schemas catalog (defaut path for VS2012 is C:\Program Files (x86)\Microsoft Visual Studio 11.0\Xml\Schemas). Then we can go to Properties of the opened xml/xslt file and set the new added schema to file:                 From now, we should have an enable intellisense as shown below: .

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• Missing error handling in Streaming-AJAX-Proxy Log

  - by Michael Freidgeim

  We are using AjaxProxy(FROM http://www.codeproject.com/KB/ajax/ajaxproxy.aspx) on our web site, but started to notice errors accessing log.txt file. I found that the file is created by Log class and doesn't have ability to switch it off and error handling. I've added reading file name from configuration and try/catch block   public static class Log     {         private static StreamWriter logStream;         private static object lockObject = new object ();     public static void WriteLine(string msg)         {                       string logFileName = ConfigurationExtensions.GetAppSetting("AjaxStreamingProxy.LogFile" ,"");                       if (logFileName.IsNullOrEmpty())                             return;                       try                      {                             if (logStream == null )                            {                                    lock (lockObject)                                   {                                           if (logStream == null )                                          {                            logStream = File.AppendText(Path .Combine(AppDomain.CurrentDomain.BaseDirectory, logFileName));                                          }                                   }                            }                            logStream.WriteLine(msg);                      }                       catch (Exception exc)                      {                             string ignoredMsg = String .Format("The error occured while logging {0}, but processing will continue.\n {1} ", exc);                             LoggerHelper.LogEvent(ignoredMsg, MyCategorySource, TraceEventType .Warning, true);                      }         }

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• Creating a test database with copied data *and* its own data

  - by Jordan Reiter

  I'd like to create a test database that each day is refreshed with data from the production database. BUT, I'd like to be able to create records in the test database and retain them rather than having them be overwritten. I'm wondering if there is a simple straightforward way to do this. Both databases run on the same server, so apparently that rules out replication? For clarification, here is what I would like to happen: Test database is created with production data I create some test records that I want to keep running on the test server (basically so I can have example records that I can play with) Next day, the database is completely refreshed, but the records I created that day are retained. Records that were untouched that day are replaced with records from the production database. The complication is if a record in the production database is deleted, I want it to be deleted on the test database too, so I do want to get rid of records in the test database that no longer exist in the production database, unless those records were created within the test database. Seems like the only way to do this would be to have some sort of table storing metadata about the records being created? So for example, something like this: CREATE TABLE MetaDataRecords ( id integer not null primary key auto_increment, tablename varchar(100), action char(1), pk varchar(100) ); DELETE FROM testdb.users WHERE NOT EXISTS (SELECT * from proddb.users WHERE proddb.users.id=testdb.users.id) AND NOT EXISTS (SELECT * from testdb.MetaDataRecords WHERE testdb.MetaDataRecords.pk=testdb.users.pk AND testdb.MetaDataRecords.action='C' AND testdb.MetaDataRecords.tablename='users' );

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• Why did my zpool replace never finish and what should I do now?

  - by Josh

  I have a ZFS zpool with two disks in a mirror configuration, da0 and da1. da1 failed, and so I replaced it with da2 using zpool replace BearCow da1 da2 This ran for a few hours, during which zpool status showed that the array was being resilvered. When that finished, zpool status showed that the resilver was completed, but the array was still degraded... I tried a zpool scrub and a zpool clear, but the array still shows as degraded: [root@chef] ~# zpool status BearCow pool: BearCow state: DEGRADED scrub: scrub completed after 0h20m with 0 errors on Tue Oct 9 16:13:27 2012 config: NAME STATE READ WRITE CKSUM BearCow DEGRADED 0 0 0 mirror DEGRADED 0 0 0 da0 ONLINE 0 0 0 replacing DEGRADED 0 0 0 da1 OFFLINE 0 0 0 da2 ONLINE 0 0 0 errors: No known data errors I can't zpool replace BearCow da1 da2 anymore because da2 is already a member of BearCow... This is FreeBSD (FreeNAS) running ZFS pool version 15. How do I get my array to show as healthy again?

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• Random and Selective ARP blindness in VMWare ESXi 4.1

  - by Peter Grace

  We have multiple VMWare ESX servers spread out amongst our company, doing various tasks. One particular ESXi host is exhibiting very peculiar behavior. We detect it when our monitoring system (Orion) notifies us that it can no longer ping the box. Upon jumping on the local console of the guest in question, we see that it cannot ping any new addresses that aren't already in its ARP table. At first we thought that the problem was just related to one of our guests, as the problem seemed to always happen to another guest, DevRedis. However, this afternoon the problem swapped and started happening on ApacheBox rather than DevRedis. When I have been fortunate to catch the problem, I have run tcpdump on both sides of the connection (one side being vmware, the other side being a physical webserver) and have noticed the following course of events: Guest ApacheBox sends an ARP request for the physical address of server WindowsBeast WindowsBeast tenders an ARP is-at back to the network indicating its physical mac address. ApacheBox never sees the ARP is-at response. The ESX host in question is running VMware ESXi, 4.1.0, 348481 The two guests (DevRedis and ApacheBox) are both running CentOS 6.3, however they are running two separate kernel versions ( 2.6.32-279.9.1.el6.x86_64 and 2.6.32-279.el6.x86_64 ) so I'm not entirely sure it's a CentOS problem. Does anyone have any thoughts on what might cause this? Has anyone run into it before?

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• ProFTPd: Multiple Domain VirtualHosts on one IP address

  - by Badger

  I have a webserver that we are giving a consultant FTP access to. For one domain hosted on that server he needs access to a "dev" directory and for a different domain hosted on that server he needs access to a different directory. I am trying to set this up with VirtualHosts, but I am having issues. Here is the VirtualHost bit of my proftpd.conf file: <VirtualHost www.example2.com> ServerName "Example 2" DefaultRoot /var/www/example2/dev </VirtualHost> <VirtualHost www.example1.com> ServerName "Example 1" DefaultServer on DefaultRoot /var/www/example1 </VirtualHost> When I FTP to either domain I always get the first VirtualHost, even if I FTP to the second domain.

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• Equalizing Agent and Master Nagios on state change alone

  - by punith

  We have a setup where there are distributed Nagios running on multiple sites and are equalizing their data to the main Nagios server. The problem is it sends back the data to main Nagios server no matter if there is a state change in host or service. Is it possible to configure the slave Nagios to check the service/Host every 5 sec but send back the data only if there is a state change. Currently it is implemented by Obsess Over Hosts/Service which always runs the command which will equalize. Nagios version is 3 I am no administrator but a developer so I don't know the exact jargon so please bare with me.

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• haproxy + nginx: https trailing slashes redirected to http

  - by user1719907

  I have a setup where HTTP(S) traffic goes from HAProxy to nginx. HAProxy nginx HTTP -----> :80 ----> :9080 HTTPS ----> :443 ----> :9443 I'm having troubles with implicit redirects caused by trailing slashes going from https to http, like this: $ curl -k -I https://www.example.com/subdir HTTP/1.1 301 Moved Permanently Server: nginx/1.2.4 Date: Thu, 04 Oct 2012 12:52:39 GMT Content-Type: text/html Content-Length: 184 Location: http://www.example.com/subdir/ The reason obviously is HAProxy working as SSL unwrapper, and nginx sees only http requests. I've tried setting up the X-Forwarded-Proto to https on HAProxy config, but it does nothing. My nginx setup is as follows: server { listen 127.0.0.1:9443; server_name www.example.com; port_in_redirect off; root /var/www/example; index index.html index.htm; } And the relevant parts from HAProxy config: frontend https-in bind *:443 ssl crt /etc/example.pem prefer-server-ciphers default_backend nginxssl backend nginxssl balance roundrobin option forwardfor reqadd X-Forwarded-Proto:\ https server nginxssl1 127.0.0.1:9443

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• mysql master slave "table already exists" but table not exists

  - by Korjavin Ivan

  I have 1 master mysql process, and 2 slave. Today on both slaves i see : Error 'Table 'bgbilling.contract_status_balance_dump' already exists' on query. Default database: 'bgbilling'. Query: 'CREATE TABLE contract_status_balance_dump( UNIQUE(cid) ) SELECT cid, MAX(yy*12+(mm-1))%12 + 1 AS mm,FLOOR(MAX(yy*12+(mm-1)) / 12) AS yy FROM contract_balance GROUP BY cid' "show tables" does not show this table. I tryed stop slave , and do "drop table contract_status_balance_dump" but: ERROR 1051 (42S02): Unknown table 'contract_status_balance_dump' How its possible? And how fix that?

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• Foremost custom file type not accepted by -t argument

  - by Channel72

  I'm trying to recover a deleted file on an ext3 file system using the foremost utility. The file I want to recover is a hpp C++ source code file. However, foremost does not automatically support the hpp file extension, so I have to add it to the config file. So, following the instructions on the man page, I add the following line to the config file: hpp n 50000 include include ASCII Then I run foremost as follows: $foremost -v -T -t hpp -i /dev/md0 -o /home/recover/ Instead of doing anything, it just displays the help message. If I change the hpp to htm or jpg, it works. So apparently foremost isn't accepting the custom file type I added into the config file. But I've looked over this dozens of times now, and I can't see what I'm doing wrong. I'm following the instructions exactly. Why doesn't foremost recognize the new file type I added to the config file?

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• How to configure remote access to multiple subnets behind a SonicWALL NSA 2400

  - by Kyle Noland

  I have a client that uses a SonicWALL NSA 2400 as their firewall. I need to setup a second LAN subnet for a handful of PC. Management has decided that there should be a second subnet even though intend to allow access across the two subnets - I know... I'm having trouble getting communication across the 2 subnets. I can ping each gateway, but I cannot ping or seem to route traffic fron subnet A to subnet B. Here is my current setup: X0 Interface: LAN zone with IP addres 192.168.1.1 X1 Interface: WAN zone with WAN IP address X2 Interface: LAN zone with IP address 192.168.75.1 I have configured ARP and routes for the secondar subnet (X2) according to this SonicWALL KB article: http://www.sonicwall.com/downloads/supporting_multiple_firewalled_subnets_on_sonicos_enhanced.pdf using "Example 1". At this point I don't minding if I have to throw the SonicWALL GVC software VPN client into the mix to make it work. It feel like I have an Access Rule issue, but for testing I made LAN LAN, WAN LAN and VPN LAN rules wide open with the same results.

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• Share files - Ubuntu 12.4 and Windows 7 - one network - password not accepted

  - by gotqn

  I have three machines - two with windows 7 and one with Ubuntu 12.4 version. There are in the same network connected by modem. The two machines shares file with no problem, but they can not see the machine with Ubuntu. On the other hand, I am able to see the share files of the windows machines from the Ubuntu's Network. When I select a folder, it wants the network password - I changed it several times in order to be sure that I am entering the correct one but in every case it says that the password is wrong. I have read some topics about files sharing between Linux and windows in which it is said that I should use samba, but is there a more easy way to do this, using the build it options?

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