chaining

问题 I know the benefits of chaining within PHP but lets say we have this following situation $Mail = new MailClass("mail") ->SetFrom("X") ->SetTo("X") ->SetSubject("X") ->AddRecipient("X") ->AddRecipient("X") ->AddRecipient("X") ->AddRecipient("X") ->AddRecipient("X") ->AddRecipient("X") ->Send(); Are there any issues with returning and reusing the object over and over again, issues such as speed or failure to follow best Practises Also a good read on this if your new to Fluent-Interface's:

问题 I'm trying to migrate an existing application from IIS with ServletExec to tomcat. I got everything working except for the case where there is a servlet chain with two servlets. The first servlet does some processing and the second servlet does some translation. request-->ProcessServlet--> (untranslated html) -->TranslateServlet --> response In my case, I can call the ProcessServlet and it produces html with untranslated tags. The second servlet looks like it takes the html, locates well

问题 I have a node.js function: function myFunc(callback) { var ret = 50; // some time consuming calculation return callback(random); } How do I know when this function has completed if I can't edit it in anyway. Is there a way to chain another callback function onto it. Again without editing myFunc in anyway. i.e. if I am using: async.forEach([1, 2, 3], function iter(myFunc(console.log), ????) {}, function(err){ // if any of the saves produced an error, err would equal that error }); What do I

问题 I have a class in php that works with the chainning method, but the problem is that I want to chain the methods in some order. class Chain { public function foo () { return $this; } public function bar () { return $this; } public function some () { return $this; } } So, if I use this class, then I can chain this methods in 9 different ways (all the possible combinations of 3 elements) But what happen if I determine that the method some always must to be chained after foo or bar and not in

问题 In PHP using method chaining how would one go about supplying a functional call after the last method being called in the chain? Also while using the same instance (see below). This would kill the idea of implementing a destructor. The end result is a return value and functional call of private "insert()" from the defined chain properties (of course) without having to call it publicly, no matter of the order. Note, if I echo (__toString) the methods together it would retrieve the final

问题 I want to chain methods in Javascript (using Node.js). However, I encountered this error: var User = { 'deletes': function() { console.log('deletes'); return this; }, 'file': function(filename) { console.log('files'); } }; User.deletes.file(); node.js:50 throw e; // process.nextTick error, or 'error' event on first tick ^ TypeError: Object function () { console.log('deletes'); return User; } has no method 'file' at Object.<anonymous> (/tests/isolation.js:11:14) at Module._compile (node.js:348

问题 I am chaining an undetermined amount of map reduce jobs together for a parallel BFS shortest path algorithm and when the path cannot be determined, my jobs loop infinitely without producing any records. I figured the best way to check this is to get the Map Output Bytes counter that is maintained by hadoop. How can I get access to this counter? 回答1: To get the map output bytes counter produced by the job, use long outputBytes = job.getCounters().findCounter("org.apache.hadoop.mapred.Task

问题 Dear stackoverflow community, I am using application craft as a JS cloud IDE and integrating Parse's cloud database for storage. I'm writing a subscription service and want to check to see if a user is already subscribed prior to either authenticating their use or prompting them to sign up. Being an asynchronous call I'm trying to utilise Parse's/Promise's .then method to wait for the server's response before proceeding. I've read the examples and samples on the Parse site (linked before) yet

问题 I am building an application that uses hostname routing to detect subdomains like user1.example.com user2.example.com and also have custom routes like user1.example.com/login This works well so far, however when I add custom routes they do not work. I have searched and read a lot but seems there is something I am missing. Here is what I have so far: //my routes in routes.ini [development] routes.login.type = "Zend_Controller_Router_Route" routes.login.route = "/login" routes.login.defaults

问题 Suppose that I have a long chain of jquery methods and want to add extra call of one of two methods (e.g. show or hide ) depending on some boolean condition. There are two ways to do it: 1) Dot notation : store the method chain in a variable, then call extra method (resolved by if...else construct or ternary operator) with this variable using dot notation. Code : var $tmp = $el._long_()._method_()._chain_(); if (condition) $tmp.show(); else $tmp.hide(); 2) Bracket notation : append extra call