behavior | 易学教程

PHP or Apache seems to be caching files read via file_get_contents or include (unwanted behaviour)

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问题 Our web application has version numbers that get served out to the client on each request so we can detect an update to the code (ie rolling updates) and displays a popup informing them to reload to take advantage of the latest update. But I'm experiencing some weird behaviour after the update of the version number on the server, where some requests return the new version number and some return the old, so the popup keeps poping up until you have reloaded the page a few times. Originally I

Java Memory Behavior : Different with Thread.sleep

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问题 I am trying to do some memory analysis using visualvm. I have written a basic code that runs an infinite loop to add objects to List. package home.always.learning.java; import java.util.ArrayList; import java.util.List; public class Heaper { private static List<PersonDetails> listObj = new ArrayList<PersonDetails>(); private static final String nameConst = "Tarun Trehan"; public static void main(String[] args)throws Exception{ personListCreation(); } public static void personListCreation()

How do Behaviors and ViewModels relate in MVVM?

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问题 So I stumbled upon a problem while learning MVVM. I had a TreeView that contained TextBlocks which I wanted to perform an action on when I double clicked any of the TextBlocks in the TreeView. I started to learn about Behaviors, and I have a great example of how a behavior is implemented but the example does not connect the Behavior to a ViewModel at all. So in other words, if I double click on the TextBlock, I have the Behavior class that catches it but I don't have any ViewModel to perform

Doctrine: How to remove part of a where clause from select query inside listener (preDqlSelect)?

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问题 My listener is part of a behavior, that should remove all is_published checks in the where clause of any called select query. Adding a part to a clause is really easy, but how to remove one. There are some functions like Doctrine_Query->removeDqlQueryPart('where') , but that removes the complete where clause, while I only need the 'is_published = ?' part to be removed. However I could handle this manually somehow, with regex or something. But the tricky part is, how to remove the parameter

mobile IOS Google chrome address bar behaviour

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问题 I have spent a lot of time trying jquery/javscript "fix" to get this worked. Since the last update of chrome mobile for IOS, the address bar of the browser behaves differently. I'm sure you guys are aware of what I'm talking about: You scroll down your page, the bar hides up, but once you scroll up, it appears. Yes, it is a good user experience, I can tell. The problem is that I do have fixed element on top of my web app (header), and every time I scroll up, the address bar goes over my fixed

iPhone - viewDidUnload/viewDidLoad called inconsistently

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I was doing some testing and debugging of my Iphone app today and encountered some strange behaviour. In my MainView I have two modal views and when showing one of these using presentModalViewController I noted that the viewDidUnload method of my MainView was called while it was not happening when showing the other. It was the same case for the viewDidLoad method (of MainView ) while closing the subviews. I inspected the two methods for opening and closing the subviews and the only difference I found was in the modalTransitionStyle . In the one which did activate viewDidUnload / viewDidLoad I

Yii2 trim everything on save

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问题 Yii2 framework. The idea to create common behavior for common model: before Validate trims all fields in model. if it's array trim all values in array. I'm wondered why in Yii2 core doesn't exist such possibility. Or I'm wrong. Am I? What problems could I face if I trim all fields? 回答1: You can create a behavior and attach it at your models. 1) Create the behavior TrimBehavior in common/components . <?php namespace common\components; use yii\db\ActiveRecord; use yii\base\Behavior; class

Generic Behavior

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I would like create generic behavior. My problem is generic declaration in XAML. public class GenericBehavior<T> : Behavior<DataGrid> where T : class { } I can’t use x:TypeArguments because I don’t have loose XAML file. In WPF and when targeting .NET Framework 4, you can use XAML 2009 features together with x:TypeArguments but only for loose XAML (XAML that is not markup-compiled). Markup-compiled XAML for WPF and the BAML form of XAML do not currently support the XAML 2009 keywords and features I found some workaround with MarkupExtension but with Behaviors not work. In my current solution I

How State machine diagram can be represented as a Behavior for an operation in UML?

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Behaviors (Method Body)can be state machines or activities - activities are easy to understand, as they are the equivalent of procedural code. I don't understand how a state machine can be used as the behavior for an operation? Could you Please provide a simple example for that? ---Note--- Operation is a specification-only element - imagine it as the method signature in OO programming languages. It has a name and a list of parameters. Behavior is (among other things) what an operation (or another behavioral feature such as a reception) does when invoked - imagine it as the body of the method.

Java Memory Behavior : Different with Thread.sleep

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I am trying to do some memory analysis using visualvm. I have written a basic code that runs an infinite loop to add objects to List. package home.always.learning.java; import java.util.ArrayList; import java.util.List; public class Heaper { private static List<PersonDetails> listObj = new ArrayList<PersonDetails>(); private static final String nameConst = "Tarun Trehan"; public static void main(String[] args)throws Exception{ personListCreation(); } public static void personListCreation() throws Exception { int i = 0; while(true) { System.out.println("Looping to create person list..."); i++;