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> **_ > > > The following example defines a Point type derived from the Object class and overrides many of the virtual methods of the Object class. In addition, the example shows how to call many of the static and instance methods of the Object class. To browse the .NET Framework source code for this type, see the Reference Source. Namespace: System Assembly: mscorlib (in mscorlib.dll) > > _ //* is:open label:"Assembly: mscorlib" > ```javascript > if ' The Point class is derived from System.Object. > Class Point > Public x, y As Integer > > Public Sub New(ByVal x As Integer, ByVal y As Integer) > Me.x = x > Me.y = y > End Sub > > Public Overrides Function Equals(ByVal obj As Object) As Boolean > ' If Me and obj do not refer to the same type, then they are not equal. > Dim objType As Type = obj.GetType() > Dim meType As Type = Me.GetType() > If Not objType.Equals(meType) Then > Return False > End If > ' Return true if x and y fields match. > Dim other As Point = CType(obj, Point) > Return Me.x = other.x AndAlso Me.y = other.y > End Function > > ' Return the XOR of the x and y fields. > Public Overrides Function GetHashCode() As Integer > Return (x << 1) XOr y > End Function > > ' Return the point's value as a string. > Public Overrides Function ToString() As String > Return String.Format("({0}, {1})", x, y) > End Function > > ' Return a copy of this point object by making a simple field copy. > Public Function Copy() As Point > Return CType(Me.MemberwiseClone(), Point) > End Function > End Class > > NotInheritable Public Class App > Shared Sub Main() > ' Construct a Point object. > Dim p1 As New Point(1, 2) > > ' Make another Point object that is a copy of the first. > Dim p2 As Point = p1.Copy() > > ' Make another variable that references the first Point object. > Dim p3 As Point = p1 > > ' The line below displays false because p1 and p2 refer to two different objects. > Console.WriteLine([Object].ReferenceEquals(p1, p2)) > > ' The line below displays true because p1 and p2 refer to two different objects > ' that have the same value. > Console.WriteLine([Object].Equals(p1, p2)) > > ' The line below displays true because p1 and p3 refer to one object. > Console.WriteLine([Object].ReferenceEquals(p1, p3)) > > ' The line below displays: p1's value is: (1, 2) > Console.WriteLine("p1's value is: {0}", p1.ToString()) > > End Sub > End Class > ' This example produces the following output: > ' > ' False > ' True > ' True > ' p1's value is: (1, 2) > } > ```
Due by January 5, 2036•111/118 issues closed<<--~invert~-->> <?xml version="1.0" encoding="UTF-8"?> <classpath> <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/> <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/> <classpathentry kind="src" path="src"/> <classpathentry kind="output" path="bin"/> #https://api.travis-ci.org/repos/GistIcon/angular-phonecat/cc.xml </classpath> [](https://travis-ci.org/angular/angular) <<--~invert~-->> <<//** intag **//>> using System; // The Point class is derived from System.Object. class Point { public int x, y; public Point(int x, int y) { this.x = x; this.y = y; } public override bool Equals(object obj) { // If this and obj do not refer to the same type, then they are not equal. if (obj.GetType() != this.GetType()) return false; // Return true if x and y fields match. Point other = (Point) obj; return (this.x == other.x) && (this.y == other.y); } // Return the XOR of the x and y fields. public override int GetHashCode() { return x ^ y; } // Return the point's value as a string. public override String ToString() { return String.Format("({0}, {1})", x, y); } // Return a copy of this point object by making a simple field copy. public Point Copy() { return (Point) this.MemberwiseClone(); } } public sealed class App { static void Main() { // Construct a Point object. Point p1 = new Point(1,2); // Make another Point object that is a copy of the first. Point p2 = p1.Copy(); // Make another variable that references the first Point object. Point p3 = p1; // The line below displays false because p1 and p2 refer to two different objects. Console.WriteLine(Object.ReferenceEquals(p1, p2)); // The line below displays true because p1 and p2 refer to two different objects that have the same value. Console.WriteLine(Object.Equals(p1, p2)); // The line below displays true because p1 and p3 refer to one object. Console.WriteLine(Object.ReferenceEquals(p1, p3)); // The line below displays: p1's value is: (1, 2) Console.WriteLine("p1's value is: {0}", p1.ToString()); } } // This code example produces the following output: // // False // True // True // p1's value is: (1, 2) //
Due by December 30, 2061•6/12 issues closedNASA's Jet Propulsion Laboratory is one of tens of thousands of teams around the world using Slack to make their working lives simpler, more pleasant, and more productive.[ERR_SPDY_PING_FAILED:db/structure.sql](*****:/api.githubussercontent.com) using System; // The Point class is derived from System.Object. class Point { public int x, y; public Point(int x, int y) { this.x = x; this.y = y; } public override bool Equals(object obj) { // If this and obj do not refer to the same type, then they are not equal. if (obj.GetType() != this.GetType()) return false; // Return true if x and y fields match. Point other = (Point) obj; return (this.x == other.x) && (this.y == other.y); } // Return the XOR of the x and y fields. public override int GetHashCode() { return x ^ y; } // Return the point's value as a string. public override String ToString() { return String.Format("({0}, {1})", x, y); } // Return a copy of this point object by making a simple field copy. public Point Copy() { return (Point) this.MemberwiseClone(); } } public sealed class App { static void Main() { // Construct a Point object. Point p1 = new Point(1,2); // Make another Point object that is a copy of the first. Point p2 = p1.Copy(); // Make another variable that references the first Point object. Point p3 = p1; // The line below displays false because p1 and p2 refer to two different objects. Console.WriteLine(Object.ReferenceEquals(p1, p2)); // The line below displays true because p1 and p2 refer to two different objects that have the same value. Console.WriteLine(Object.Equals(p1, p2)); // The line below displays true because p1 and p3 refer to one object. Console.WriteLine(Object.ReferenceEquals(p1, p3)); // The line below displays: p1's value is: (1, 2) Console.WriteLine("p1's value is: {0}", p1.ToString()); } } // This code example produces the following output: // // False // True // True // p1's value is: (1, 2) // <h2> <a id="setting-up-ssh-agent-forwarding" class="anchor" href="#setting-up-ssh-agent-forwarding" aria-hidden="true"><span class="octicon octicon-link"></span></a>Setting up SSH agent forwarding</h2> <p>Ensure that your own SSH key is set up and working. You can use <a href="https://help.github.com/articles/generating-ssh-keys">our guide on generating SSH keys</a> if you've not done this yet.</p> <p>Ensure that your own SSH key is set up and working. You can use <a href="https://help.github.com/articles/generating-ssh-keys">our guide on generating SSH keys</a> if you've not done this yet.</p> <pre class="command-line"><span class="command">ssh -T git@github.com</span> <span class="comment"># Attempt to SSH in to github</span> <span class="output">Hi <em>username</em>! You've successfully authenticated, but GitHub does not provide</span> <span class="output">shell access.</span> </pre> Description ----------- This module provide easy Content Delivery Network integration for Drupal sites. It alters file URLs, so that files are downloaded from a CDN instead of your web server. Drupal 6 needs to be patched (patch included) to be able to rewrite the file URLs — the same patch is already included in Drupal 7, so upgrading is easy! Alternatively, you could use Pressflow [1], which already includes this Drupal core patch. If you are okay with having most, but not all files served from a CDN, then it's even possible to just rely on the (automatically enabled) fallback mechanism that uses Drupal's powerful theme layer to rewrite as many file URLs as possible. For complete CDN coverage however, you will have to apply the Drupal core patch. It provides two modes: "Origin Pull" and "File Conveyor". In "Origin Pull" mode, only "Origin Pull" CDNs are supported (hence the name). These are CDNs that only require you to replace the domain name with another domain name. The CDN will then automatically fetch (pull) the files from your server (the origin). In "File Conveyor" mode, this module integrates with the File Conveyor [2] daemon. This allows for much more advanced setups: files can be processed (e.g. optimize images like smush.it [3], minify CSS with YUI Compressor [4], minify JS with YUI compressor or Google Closure Compiler [5], and it's easy to add your own!), before they are synced and your CDN doesn't *have* to support Origin Pull, any push method is fine (supported transfer protocols: FTP, Amazon S3, Rackspace CloudFiles). File Conveyor is flexible enough to be used with *any* CDN, thus it enables you to avoid vendor lock-in. If you're not sure which mode to use, use "Origin Pull". It's easier and more reliable. The only common CDN today (2011–2012) that doesn't support it is Rackspace Cloud Files. _Note:_ It is essential that you understand the key properties of a CDN, most importantly the differences between an Origin Pull CDN and a Push CDN. A good (and compact!) reference is the "Key Properties of a CDN" article [6]. The CDN module aims to do only one thing and do it well: altering URLs to point to files on CDNs. However, in later versions, it does as much as possible to make CDN integration frictionless: • Any sort of CDN mapping • optimal Far Future expiration (http://drupal.org/node/974350) - CORS (http://drupal.org/node/982188) - signed URLs prevent abuse - disabled by default, automatically disabled when in maintenance mode - *requires* a CDN or reverse proxy, not Apache/nginx/lighttpd/…! • Advanced Help integration to guide you (http://drupal.org/node/1413162) • DNS prefetching (http://drupal.org/node/982188) • CSS aggregation (http://drupal.org/node/1428530) • auto-balance files over multiple CDNs (http://drupal.org/node/1452092) • … and many more details that are taken care of automatically But in some cases, simply altering the URL is not enough, that's where the AdvAgg module comes in: If you've ever had any issues with CSS or JS files not behaving as desired, check out AdvAgg. The "Advanced CSS/JS Aggregation" module solves all issues that arise from having CSS/JS served from a CDN. Keeping track of changes to CSS/JS files, smart aggregate names, 404 protection, on-demand generation, works with private file system, Google CDN integration, CSS/JS compression, GZIP compression, caching, and smart bundling are some of the things AdvAgg does. It's also faster then core's file aggregation. [1] http://pressflow.org/ [2] http://fileconveyor.org/ [3] http://smushit.com/ [4] http://developer.yahoo.com/yui/compressor/ [5] http://code.google.com/closure/compiler/ [6] http://wimleers.com/article/key-properties-of-a-cdn Supported CDNs -------------- - Origin Pull mode: any Origin Pull CDN (or alternatively: domains that point to your main domain, by using so called "CNAME" DNS records). - File Conveyor mode: any Origin Pull CDN and any push CDN that supports FTP. Support for other transfer protocols is welcomed and encouraged: your patches are welcome! Amazon S3, Amazon CloudFront and Rackspace CloudFiles are also supported. Module compatibility -------------------- This module has been verified to be compatible with the following modules: - CSS Gzip (This module is obsolete when using Origin Pull mode with the Far Future expiration setting enabled.) - ImageCache (version 2.0 beta 12 or later) - Javascript Aggregator Installation ------------ 1) Place this module directory in your "modules" folder (this will usually be "sites/all/modules/"). Don't install your module in Drupal core's "modules" folder, since that will cause problems and is bad practice in general. If "sites/all/modules" doesn't exist yet, just create it. 2) Optional, but recommended. Apply the Drupal core patch (patches/drupal6.patch). Instructions can be found at http://drupal.org/patch/apply. However, a quick reminder: a) Change the directory to the root directory of your Drupal core: cd /htdocs/example.com b) Copy the patch to this directory cp /htdocs/example.com/sites/all/modules/cdn/patches/drupal6.patch . c) Apply the patch: patch -p0 < drupal6.patch This patch effectively backports hook_file_url_alter() from Drupal 7 to Drupal 6. See the notes about this backport if you're interested in the details or want to use it in your own module. NOTE: if you skip this step, the fallback mechanism will be used! NOTE: Pressflow users don't have to apply the Drupal core patch; Pressflow already includes this patch! The same applies to Cocomore Drupal users. 3) Enable the module. 4) Visit "admin/settings/cdn" to learn about the various settings. 5) Go to your CDN provider's control panel and set up a "CDN instance" (Amazon CloudFront calls this a "distribution"). There, you will have to specify the origin server (Amazon CloudFront calls this a "custom origin"), which is simply the domain name of your Drupal site. The CDN will provide you with a "delivery address", this is the address that we'll use to download files from the CDN instead of the Drupal server. Suppose this is `http://d85nwn7m5gl3y.cloudfront.net`. (It acts like a globally distributed, super fast proxy server.) Relevant links: - Amazon CloudFront: http://docs.amazonwebservices.com/AmazonCloudFront/latest/DeveloperGuide/CreatingDistributions.html?r=4212 6) Optionally, you can create a CNAME alias to the delivery address on your DNS server. This way, it's not immediately obvious from the links in the HTMl that you're using an external service (that's why it's also called a vanity domain name). However, if you're going to use your CDN in HTTPS mode, then using vanity domains will break things (because SSL certificates are bound to domain names). 7) Enter the domain name (`http://d85nwn7m5gl3y.cloudfront.net`, or the vanity domain/CNAME if you used that instead) at admin/settings/cdn/details. If you want to support HTTPS transparently, it is recommended to enter it as `//d85nwn7m5gl3y.cloudfront.net` instead — this is a protocol-relative URL. 8) Go to "admin/reports/status". The CDN module will report its status here. 9) Enable the display of statistics at "admin/settings/cdn", browse your site with your root/admin (user id 1) account. The statistics will show which files are served from the CDN! Cross-Origin Resource Sharing (CORS) ------------------------------------ By integrating a CDN, and depending on your actual configuration, resources might be served from (a) domain(s) different than your site's domain. This could cause browsers to refuse to use certain resources since they violate the same-origin policy. This primarily affects font and JavaScript files. To circumvent this, you can configure your server to serve those files with an additional Access-Control-Allow-Origin header, containing a space-separated list of domains that are allowed to make cross-domain use of a resource. Note that this will only work if your CDN provider does not strip this header. For server-specific instructions on adding this header, see http://www.w3.org/wiki/CORS_Enabled#At_the_HTTP_Server_level... If you are unable to add this header, or if your CDN provider ignores it, you can add the files to the CDN module's blacklist to exclude them being served by the CDN, or in the case of fonts, you can embed them in stylesheets via data URIs (see https://developer.mozilla.org/en/data_URIs). The Far Future expiration functionality takes care of this automatically! File Conveyor mode ------------------ 1) If you want to use File Conveyor mode, install and configure the File Conveyor first. You can download it at http://fileconveyor.org/ Then follow the instructions in the included INSTALL.txt and README.txt. Use the sample config.xml file that is included in this module, copy it to your File Conveyor installation and modify it to comply with your setup and to suit your needs. You will always need to modify this file to suit your needs. Note: the CDN integration module requires PDO extension for PHP to be installed, as well as the PDO SQLite driver. 2) Go to "admin/reports/status". The CDN module will report its status here. If you've enabled File Conveyor mode and have set up File Conveyor daemon, you will see some basic stats here as well, and you can check here to see if File Conveyor is currently running. You can also see here if you've applied the patches correctly! FAQ --- Q: Is the CDN module truly incompatible with Drupal's aggressive mode caching? A: No. The CDN module will continue to function as expected. This will only prevent per-page statistics for anonymous users from working correctly. But in most cases you wouldn't want anonymous users to see these statistics anyway. Thus, this is a non-issue. Enable aggressive mode caching without worries! Q: Is the CDN module compatible with Drupal's "private files" functionality? A: Yes. The CDN module won't break private files, they will continue to work the same way. However, it cannot serve private files from a CDN. Not every CDN supports protected/secured/authenticated file access, and those that do each have their own way of doing this (there is no standard). So private files will continue to be served by Drupal, which may or may not be acceptable for your use case. Q: Why are JavaScript files not being served from the CDN? A: The answer can be found at "admin/settings/cdn/other". Q: Why are CSS files not being served from the CDN? A: This may be caused by your theme: http://drupal.org/node/1061588. Q: Does this module only work with Apache or also with nginx, lighttpd, etc.? A: This module only affects HTML, so it doesn't matter which web server you use! Q: What does the config.xml file of the CDN module do? A: Nothing. It only serves as a sample for using File Conveyor. It's used for nothing and can safely be deleted. Q: How to use different CDNs based on the domain name of an i18n site? A: See http://drupal.org/node/1483962#comment-5744830. No cookies should be sent to the CDN ------------------------------------ Please note though that you should ensure no cookies are sent to the CDN: this would slow down HTTP requests to the CDN (since the requests become larger: they piggyback the cookie data). You can achieve this in two ways: 1) When you are using cookies that are bound to your www subdomain only (i.e. not an example.com, but on www.example.com), you can safely use another subdomain for your CDN. 2) When you are using cookies on your main domain (example.com), you'll have to use a completely different domain for the CDN if you don't want cookies to be sent. So then you should use the CDN's URL (e.g. myaccount.cdn.com). But now you should be careful to avoid JavaScript issues: you may run into "same origin policy" problems. See admin/settings/cdn/other for details. Drupal 7 no longer sets cookies for anonymous users. To achieve this in Drupal 6, you can use the "No Anonymous Sessions" module by kbahey (http://drupal.org/project/no_anon). If you just use the CDN's URL (e.g. myaccount.cdn.com), all cookie issues are avoided automatically. When using multiple servers/CDNs: picking one based on advanced criteria ------------------------------------------------------------------------ You only need this when you're using multiple servers/CDNs and you can't rely on picking a server/CDN based on the file extension, i.e. if you need more advanced criteria than only file extension. NOTE: this function is only called for file X if >1 server/CDN is available for file X. For this purpose, you can implement the cdn_pick_server() function: /** * Implementation of cdn_pick_server(). */ function cdn_pick_server($servers_for_file) { // The data that you get - one nested array per server from which the file // can be served: // $servers_for_file[0] = array('url' => 'http://cdn1.com/image.jpg', 'server' => 'cdn1.com') // $servers_for_file[1] = array('url' => 'http://cdn2.net/image.jpg', 'server' => 'cdn2.net') $which = your_logic_to_pick_a_server(); // Return one of the nested arrays. return $servers_for_file[$which]; } So to get the default behavior (pick the first server found), one would write: /** * Implementation of cdn_pick_server(). */ function cdn_pick_server($servers_for_file) { return $servers_for_file[0]; } Or if you want to balance the number of files served by each CDN (i.e. on average, each CDN serves the same amount of files on a page) instead of picking the CDN based purely on filetype, one could write: /** * Implementation of cdn_pick_server(). */ function cdn_pick_server($servers_for_file) { $filename = basename($servers_for_file[0]['url']); $unique_file_id = hexdec(substr(md5($filename), 0, 5)); return $servers_for_file[$unique_file_id % count($servers_for_file)]; } Note: if you don't want to create a small module for this function, or if you would just like to experiment with this function, you can also enter the body of this function at admin/settings/cdn/other — it will work exactly the same! If you don't know what the "body" of a function is, it's the part between the curly brackets: function doSomething() { BODY } So, in the case of the cdn_pick_server() function, this is the body that you would enter: $filename = basename($servers_for_file[0]['url']); $unique_file_id = hexdec(substr(md5($filename), 0, 5)); return $servers_for_file[$unique_file_id % count($servers_for_file)]; Supporting the CDN integration module in your modules and themes ---------------------------------------------------------------- When your module already uses file_create_url() (either because it supports user-uploaded content or generates files), then there is nothing that you have to do. It is recommended though to include the file_directory_path() in the $path you're passing. I.e., this is supported, but not recommended and even deprecated in Drupal 7 core file_create_url('test.jpg'); This will return "sites/default/files/test.jpg" (assuming that you've configured "sites/default/files" to be your files directory, i.e. the value that file_directory_path() returns). But it's recommended to do the following instead, since that will make porting to Drupal 7 easier: file_create_url(file_directory_path() . '/test.jpg); Theme developers: avoid using base_path(). I.e. instead of doing this: base_path() . path_to_theme() .'/fix-ie.css" You should do this: file_create_url(path_to_theme() .'/fix-ie.css') When images generated by ImageCache appear to be broken ------------------------------------------------------- You're likely using Varnish and an Origin Pull CDN. Try configuring your Push CDN to access the non-Varnish port (i.e. the port of the regular web server), typically port 8080. Not all CDNs support this though. Related issues: - http://drupal.org/node/862880 - http://drupal.org/node/570132#comment-4882590 Notes on the backport of hook_file_url_alter() for Drupal 6 ----------------------------------------------------------- An identical backport is impossible because in Drupal 7, there's the new File API which uses PHP stream wrappers. It's impossible to backport the entire new File API. - Issue for Drupal 7 core patch: http://drupal.org/node/499156 - The backport of hook_file_url_alter() is based on the patch *before* stream wrapper support went in, i.e. the patch in this comment: http://drupal.org/node/499156#comment-1866878 http://drupal.org/files/issues/cdn-integration-499156-62.patch - Documentation for hook_file_url_alter() for Drupal 7: http://api.drupal.org/api/function/hook_file_url_alter/7 - For analogous documentation for the Drupal 6 backport, see the included patches/hook_file_url_alter.php Author ------ Wim Leers ~ http://wimleers.com/ Version 1 of this module (for Drupal 6) was written as part of the bachelor thesis of Wim Leers at Hasselt University. http://wimleers.com/tags/bachelor-thesis http://uhasselt.be/
Overdue by 2 year(s)•Due by December 30, 2023•18/21 issues closed