instances

Cloning vs. Instantiating a new class

由 家住魔仙堡 提交于 2019-12-10 12:53:56
问题 Is cloning good practice in this case? How to do it better? public ModelCollection startParsing() { return parseFeed(new ModelSpecialEntry); } public ModelCollection parseFeed(ModelEntry pattern) { ModelCollection modelCollection = new ModelCollection(); while( condition ) { //TODO: Is cloning the best solution? ModelEntry model = (ModelEntry) pattern.clone(); model.parse(); //add this item to an collection modelCollection.add(model); } return modelCollection; } 回答1: Cloning is rarely a good

Is there documentation on how flash manages named instances across key frames?

由 纵然是瞬间 提交于 2019-12-10 11:38:00
问题 I'm looking for technical documentation on how Flash manages object instances with the same name across key frames. So far, I've noticed that when the play head moves to another frame, if an object with the same name has the same type, then the instance is preserved along with its dynamically set properties. On the other hand, as soon as the play head goes to a frame where the named instance is a different type, then it creates a new instance of the new type (with the original name), and the

TypeScript class decorator that modifies object instance

由 感情迁移 提交于 2019-12-09 05:39:48
问题 I'm making a plugin for Aurelia and need a class decorator that adds attributes to the new object instance, and calls an external function with the new object as an argument. I've looked through examples, and so far I've put together ("pseudo-ish" code) return function addAndCall(target: any): any { var original = target; var newConstructor = function (...args) { original.apply(this, args); this.newAttribute = "object instance value"; ExternalModule.externalFunction(this); }; newConstructor

Is there a Haskell (GHC) extension for partial type synonym instances?

由 不想你离开。 提交于 2019-12-07 05:26:56
问题 Using the extension TypeSynonymInstances it is possible to write an instance like that: instances MyClass String where ... Using newtype it is possible to declare an instance like that: newtype Kleisli m a b = Kleisli (a -> m b) instance MyClass (Kleisli m) where ... I now that it is not possible to do the following: type Kleisli m a b = a -> m b instance MyClass (Kleisli m) where ... Now is there an extension that allows me to do so? If not, what problems prohibit such an extension? 回答1:

Azure inter-role synchronization

由 末鹿安然 提交于 2019-12-07 04:48:11
问题 I was wondering about the best practices in synchronizing multiple azure instances that run the same role. More precisely, I want to prevent several worker roles to work on the same work-unit. Azure queues do not seem to help on this matter. One option is to use an sql table with locks and stored procedures; but using sql synchronization in Azure seems a bit awkward. Any ideas? Edit, my detailed(but simplified problem) is as follows: There are n targets. A unit of work must be done on each

GAE: memcache: is it the same across multiple app instances

由 試著忘記壹切 提交于 2019-12-07 02:50:18
问题 I have a pretty basic question: In GAE, if I use memcache to store some data once it was retrieved for the first time from the db, if then that data remains in the cache for like 2 days, do ALL instances of said application get to "see" it and retrieve it from cache? Or is the cache separate for each application instance? I'm asking this because I've seen that due to the way that GAE spawns separate VM processes (not threads) for each new instance an application needs, stuff that used to be

Delete a mutex from another process

由 会有一股神秘感。 提交于 2019-12-07 02:25:54
问题 Using the topic Overview - Handle Enumeration , number 5, the attempt Close mutex of another process and and information from Mutex analysis, the canary in the coal mine and discovering new families of malware/ , I have came up with: Attempt 1: http://pastebin.com/QU0WBgE5 You must open Notepad first. Needless to say, this is not working for me. I need better error checking to figure out what's going on. I don't know how to get mutex pointers in the format I see them in Process Explorer. My

Is there documentation on how flash manages named instances across key frames?

由 百般思念 提交于 2019-12-06 15:14:38
I'm looking for technical documentation on how Flash manages object instances with the same name across key frames. So far, I've noticed that when the play head moves to another frame, if an object with the same name has the same type, then the instance is preserved along with its dynamically set properties. On the other hand, as soon as the play head goes to a frame where the named instance is a different type, then it creates a new instance of the new type (with the original name), and the original instance of the old type is permanently discarded and all dynamically set properties on the

Touch-scroll Jquery Plugin - How to Init with different options for multiple instances?

由 [亡魂溺海] 提交于 2019-12-06 05:47:53
As found here - https://github.com/neave/touch-scroll : (function($) { // Define default scroll settings var defaults = { y: 0, scrollHeight: 0, elastic: !navigator.userAgent.match(/android/i), momentum: true, elasticDamp: 0.6, elasticTime: 50, reboundTime: 400, momentumDamp: 0.9, momentumTime: 300, iPadMomentumDamp: 0.95, iPadMomentumTime: 1200, touchTags: ['select', 'input', 'textarea'] }; // Define methods var methods = { init: function(options) { return this.each(function() { var o = $.extend(defaults, options); // Prevent double-init, just update instead if (!!this._init) { return this

I need a Python class that keep tracks of how many times it is instantiated

由 五迷三道 提交于 2019-12-06 05:20:45
问题 I need a class that works like this: >>> a=Foo() >>> b=Foo() >>> c=Foo() >>> c.i 3 Here is my try: class Foo(object): i = 0 def __init__(self): Foo.i += 1 It works as required, but I wonder if there is a more pythonic way to do it. 回答1: Nope. That's pretty good. From The Zen of Python: "Simple is better than complex." That works fine and is clear on what you're doing, don't complicate it. Maybe name it counter or something, but other than that you're good to go as far as pythonic goes. 回答2:
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