To use xxd, simply type the following command into a terminal: xxd -p myfile.bin This will print the contents of myfile.bin to the terminal, with each byte represented by two hexadecimal characters. This command is included with most distributions of Linux, and it will output the contents of a binary file in both hexadecimal and ASCII format. The easiest way to convert a binary file to text is to use the xxd command. The binary to text conversion process is known as ASCII encoding, and there are several ways to change binary files to text files in Linux. The following markup fragment from the end of the layout file shows script added to request jQuery should the CDN fail.Most of the text files we see in our everyday lives are actually stored as binary files, which is why they appear as gibberish when viewed in a text editor. When using a CDN, you should have a fallback mechanism in case the CDN request fails. In the code above, jQuery will be requested from the CDN while in release mode and the debug version of jQuery will be fetched locally in debug mode. bundles.Add(new ScriptBundle("~/bundles/jquery").Include(īundles.UseCdn = true //enable CDN supportīundles.Add(new ScriptBundle("~/bundles/jquery", public static void RegisterBundles(BundleCollection bundles) The follow code replaces the local jQuery bundle with a CDN jQuery bundle. Automatically selects the full version for debug configurations and the ".min" version for release builds.Allows you to use NuGet to update to a newer jQuery version without changing the preceding bundling code or jQuery references in your view pages.In this example, using a wild card provides the following benefits: AddAltToImg = function (imageTagAndImageID, imageContext) wild card matching shown above is used to automatically create a jQuery bundle with the appropriate version of jQuery in your Scripts folder. Consider the following JavaScript function. Minification performs a variety of different code optimizations to scripts or css, such as removing unnecessary white space and comments and shortening variable names to one character. The following image shows the same timing view of the About view shown previously, but this time with bundling and minification enabled. Fewer files means fewer HTTP requests and that can improve first page load performance. You can create CSS, JavaScript and other bundles. Bundlingīundling is a new feature in ASP.NET 4.5 that makes it easy to combine or bundle multiple files into a single file. In this case, the request was queued for 46 milliseconds waiting for another request to complete. The preceding image shows the Start event, which gives the time the request was queued because of the browser limit the number of simultaneous connections. For example, the following image shows the timing details for loading the /Scripts/MyScripts/JavaScript6.js file. You can double-click on an asset to get detailed timing information. The blue bars show the time taken to receive the response data from the server. The yellow bar is the request time to first byte, that is, the time taken to send the request and receive the first response from the server. The gray bars show the time the request is queued by the browser waiting on the six connection limit. In the image below, the IE F12 developer tools network tabs shows the timing for assets required by the About view of a sample application. That means that while six requests are being processed, additional requests for assets on a host will be queued by the browser. Most of the current major browsers limit the number of simultaneous connections per each hostname to six. Bundling and minification improves load time by reducing the number of requests to the server and reducing the size of requested assets (such as CSS and JavaScript.) Bundling and minification are two techniques you can use in ASP.NET 4.5 to improve request load time.
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