properties | 易学教程

Ember multiple property changes but want to trigger single event

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问题 I have a ArrayController for date picker with properties to and from . Now when user selects a new date range from the UI both to and from value changes. So a function which observers on to and from is trigger twice for a single change in date range. I want to trigger the function only one every date range change. Any suggestions how to do that with ember app = Ember.Application.create(); app.Time = Ember.ArrayController.create({ to: null, from: null, rootElement: "#time", debug1: function()

CLASSPATH vs java.ext.dirs

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问题 is there any reason why to favor using (possibly very long) CLASSPATH variable to set which jars should be on classpath durign application run then to use the java 1.5+ property -Djava.ext.dirs which specifies whole directory(directories) of jars to be searched? To make it real-life example I have standalone java application with lib folder containig all dependent jars. Sofar the start script is setting all the (maybe 20) jars to CLASSPATH variable one by one. Since now my application archive

CLASSPATH vs java.ext.dirs

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What's the harm of property override in Objective-C?

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问题 There are several situations where you might override a super class's property. You declare a property with the same name and same attribute of its superclass'.(since if you change the attribute you can get an compiler warning).And you can synthesieze with an ivar that you create. What's the use of this? Or what's the harm can it do? If a superclass declares a property in a class extension (a category with no name), then it might not be in the header file. If you don't know that property from

Is it bad practice to include properties/configuaration files within jars?

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问题 For example: MyApp is a web app that contains a properties file (server.properties) that describes config data (e.g. server names) for the app. In the development phase, server.properties is located in its own IDE project folder (a logical spot for it). Now it's time to deploy MyApp. The IDE makes it quite trivial to jar up the class files as well as the supporting config files. Now we just drop the Jar in the appropriate web container and away we go.... A week later... the server config data

一、springBoot自动配置原理

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我们在springBoot的启动类中，点击 @SpringBootApplication 注解，进入到注解类中，可以看到以下注解。 @Target ( { ElementType . TYPE } ) @Retention ( RetentionPolicy . RUNTIME ) //表示运行时生效 @Documented @Inherited @SpringBootConfiguration @EnableAutoConfiguration //自动配置注解 @ComponentScan ( excludeFilters = { @Filter ( type = FilterType . CUSTOM , classes = { TypeExcludeFilter . class } ) , @Filter ( type = FilterType . CUSTOM , classes = { AutoConfigurationExcludeFilter . class } ) } ) public @ interface SpringBootApplication { SpringBoot启动的时候加载主配置类，开启了自动配置功能 == @EnableAutoConfiguration == 进入到 @EnableAutoConfiguration 中，我们可以看到以下注解

Is it possible to use .properties files in web.xml in conjunction with contextConfigLocation parameter?

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问题 Here is part of my web.xml: <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:application-config.xml </param-value> </context-param> application-config.xml uses property placeholder: <context:property-placeholder location="classpath:properties/db.properties"/> Is it possible somehow to define which properties file to use in web.xml rather than in application-config.xml? 回答1: Yes, you can use ServletContextParameterFactoryBean to expose context-param value

Is it possible to use .properties files in web.xml in conjunction with contextConfigLocation parameter?

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Scalar type in Managed Object only works for IPhone 5

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问题 Property 'Latitude' is a scalar type on class 'LatitudeLongitude'. Cannot generate a setter method for it. When I generated codes for my managed object, I got a message whether I want scalar properties for primitive data type. should I use it? I want to make this application compatible with iPhone 3 - 5 is there any issues with this problem? 回答1: When you use scalar properties you have to provide implementations of getters and setters for those properties by yourself, as described in

.NET Dictionary as a Property

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问题 Can someone point me out to some C# code examples or provide some code, where a Dictionary has been used as a property for a Class. The examples I have seen so far don't cover all the aspects viz how to declare the dictionary as property, add, remove, and retrieve the elements from the dictionary. 回答1: Here's a quick example class Example { private Dictionary<int,string> _map; public Dictionary<int,string> Map { get { return _map; } } public Example() { _map = new Dictionary<int,string>(); }