properties

mongoose .find() method returns object with unwanted properties

由 僤鯓⒐⒋嵵緔 提交于 2019-12-28 02:03:35
问题 so, I've been working with mongoose for some time and I found some really weird stuff going on. It would be great if someone could enlighten me. The thing is, when using the .find() method of mongoose, the object I get as response is full of properties I don't know where It came from (I'm guessing they are built-in properties, but whatever) and I want to iterate only through the properties I .select(). Got it? No? ok... explaining better: I have my schema and model declared: var mySchema =

A better class to update property files?

由 感情迁移 提交于 2019-12-28 02:02:40
问题 Though java.util.properties allows reading and writing properties file, the writing does not preserve the formatting. Not surprising, because it is not tied to the property file. Is there a PropertyFile class out there -- or some such -- that preserves comments and blank lines and updates property values in place? 回答1: It doesn't get much better than Apache's Commons Configuration API. This provides a unified approach to configuration from Property files, XML, JNDI, JDBC datasources, etc. It

does java have something similar to C# properties? [duplicate]

由 久未见 提交于 2019-12-28 01:51:48
问题 This question already has answers here : Does Java have “properties” that work the same way properties work in C#? (5 answers) Closed 6 years ago . C# properties (I mean get and set methods) are a very useful feature. does java have something similar to C# properties too. I mean how we can implement something like the following C# code in java: public string Name { get { return name; } set { name = value; } } thank you in advance 回答1: No, Java does not have the equivalence. It only has

does java have something similar to C# properties? [duplicate]

由 穿精又带淫゛_ 提交于 2019-12-28 01:51:13
问题 This question already has answers here : Does Java have “properties” that work the same way properties work in C#? (5 answers) Closed 6 years ago . C# properties (I mean get and set methods) are a very useful feature. does java have something similar to C# properties too. I mean how we can implement something like the following C# code in java: public string Name { get { return name; } set { name = value; } } thank you in advance 回答1: No, Java does not have the equivalence. It only has

Objective-C get a class property from string

由 丶灬走出姿态 提交于 2019-12-27 22:06:31
问题 I've heard a number of similar questions for other languages, but I'm looking for a specific scenario. My app has a Core Data model called "Record", which has a number of columns/properties like "date, column1 and column2". To keep the programming clean so I can adapt my app to multiple scenarios, input fields are mapped to a Core Data property inside a plist (so for example, I have a string variable called "dataToGet" with a value of 'column1'. How can I retrieve the property "column1" from

Objective-C get a class property from string

由 此生再无相见时 提交于 2019-12-27 22:05:29
问题 I've heard a number of similar questions for other languages, but I'm looking for a specific scenario. My app has a Core Data model called "Record", which has a number of columns/properties like "date, column1 and column2". To keep the programming clean so I can adapt my app to multiple scenarios, input fields are mapped to a Core Data property inside a plist (so for example, I have a string variable called "dataToGet" with a value of 'column1'. How can I retrieve the property "column1" from

Java反射：框架设计的灵魂

由 て烟熏妆下的殇ゞ 提交于 2019-12-27 20:23:37
Java反射：框架设计的灵魂 框架：办成品软件，可以在框架的基础上进行开发 反射：将类的各个部分封装成对象，这就是反射机制 反射的好处 在程序运行的过程中，操作这些对象 可以降低程序的耦合性，提高程序的可扩展性 获取class对象的方式 Class.forName(“全类名”):经字节码文件加载进内存，返回class对象 多用于配置文件，将类名定义在配置文件中，读取文件，加载类 类名.class:通过类名的属性class获取 多用于参数传递 对象.getClass():getClass()方法在Object方法中定义 多用于对象的获取字节码的方式 同一个字节码文件(*.class)在一次程序运行过程中，只被加载一次 不论通过哪一种方式获取的Class文件都是同一个 package reflect ; import domain . Person ; public class ReflectPerson { public static void main ( String [ ] args ) throws Exception { //Class.forName("全类名") Class cls1 = Class . forName ( "domain.Person" ) ; System . out . println ( cls1 ) ; //类名.class Class

Do write-only properties have practical applications?

由 一世执手 提交于 2019-12-27 12:06:07
问题 I don't know why I started thinking about this, but now I can't seem to stop. In C# - and probably a lot of other languages, I remember that Delphi used to let you do this too - it's legal to write this syntax: class WeirdClass { private void Hello(string name) { Console.WriteLine("Hello, {0}!", name); } public string Name { set { Hello(name); } } } In other words, the property has a setter but no getter , it's write-only . I guess I can't think of any reason why this should be illegal , but

Do write-only properties have practical applications?

由 瘦欲@ 提交于 2019-12-27 12:03:09
问题 I don't know why I started thinking about this, but now I can't seem to stop. In C# - and probably a lot of other languages, I remember that Delphi used to let you do this too - it's legal to write this syntax: class WeirdClass { private void Hello(string name) { Console.WriteLine("Hello, {0}!", name); } public string Name { set { Hello(name); } } } In other words, the property has a setter but no getter , it's write-only . I guess I can't think of any reason why this should be illegal , but

Spring @Value annotation in @Controller class not evaluating to value inside properties file

由 北慕城南 提交于 2019-12-27 11:55:52
问题 I am new to Spring and trying to inject a string with a value using the @Value("${loginpage.message}") annotation inside of a controller annotated with the @Controller annotation and the value of my string is being evaluated as the string "${loginpage.message}" and not what is inside my properties file. Below is my controller with the string 'message' that I want to inject. @Controller public class LoginController extends BaseController { @Value("${loginpage.message}") private String message;
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