class

php: efficiently running functions with one-time loaded classes multiple times in optional files

由 浪尽此生 提交于 2020-01-25 13:51:33
问题 after reading the responses I have rewritten my question. Let's say I have a theoretical php application that uses objects that do different things. For every page that gets loaded by the application, different scripts will be run. now I made a simple php script that creates a simple object. (this is all made up, I'm just trying to understand this before I code it) $user = new userClass($db); $user->login($credentials); all is fine, and I can even repeat the procedure several times after

javascript changes one some class names

由 我只是一个虾纸丫 提交于 2020-01-25 12:32:09
问题 my javascript function is only changing two of 4 classes. If I click it again it changes the third one but then completely ignores the last one. function move(obj,obj2) { var _elements = document.getElementsByClassName(obj); document.getElementsByClassName(obj2).className = 'none'; for( var i = 0; i < _elements.length; i ++){ _elements[i].className ='none'; } } <a href="javascript: move('bigbox','bigbox_submit');" id="closebigbox" >Clear</a> <form> <input type="text" class="bigbox" /><br/>

springboot添加自定义注解

由 耗尽温柔 提交于 2020-01-25 09:30:45
spring拦截器是基于动态代理，注解就是拦截器，所以关于动态代理需要注意的坑，注解同样要注意。 1.创建注解类 /** * @Target 此注解的作用目标，括号里METHOD的意思说明此注解只能加在方法上面,TYPE意思是可注解于类上 * @Retention 注解的保留位置，括号里RUNTIME的意思说明注解可以存在于运行时，可以用于反射 * @Documented 说明该注解将包含在javadoc中 */ @Target(value = {ElementType.METHOD,ElementType.TYPE}) @Retention(RetentionPolicy.RUNTIME) @Documented public @interface IgnoreToken{ } 2.定义拦截器 public class IgnoreTokenHandle extends HandlerInterceptorAdapter{ /** * This implementation always returns {@code true}. */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws

C# is there a difference between passing a struct reference and a class reference to a method in terms of speed?

由 房东的猫 提交于 2020-01-25 09:23:07
问题 As seen here, structs are passed by copy and classes by reference. But why is passing a struct by reference using the ref keyword still slower than passing a reference to a class ? I got different speeds for my program by replacing the struct keywords with class . All of the variables were already passed with the ref keyword. By changing keywords, I got 20% speed increase in my tests. Shoudn't the speed remain the same since I was already passing by reference ? What am I not understanding ?

How do i change property value in vb.net

由 时间秒杀一切 提交于 2020-01-25 08:29:24
问题 i would like to assign my array vals to properties of my object. like: For i = 1 To 32 myClass.Prop_i = val[i] Next 回答1: VB.NET isn't a dynamic language: you can't do such things. Since VB.NET doesn't have a "dynamic" keyword like C#, your option is reflection: myClass.GetType().GetProperty("Prop_" + i.ToString()).SetValue(myClass, val[i], null); But if you're more explicit with your problem maybe there's a more elegant solution than reflection ;) 回答2: Your property needs to define Set . This

Get class type in shared objective-c method?

由 时间秒杀一切 提交于 2020-01-25 08:23:06
问题 In Objective-C there is the Alloc/Init metaphor. They've also added a shared convenience method called 'new' that internally just calls both in succession. And if I create a subclass of NSObject called FooClass, FooClass picks up those shared methods, including 'new'. BUT... how the heck is that implemented?? It can't simply delegate to the base class because that would just instantiate an instance of NSObject, not your derived class FooClass, yet it still works! So how would someone write

Objective-c Getting variable from another classe [duplicate]

由 生来就可爱ヽ(ⅴ＜●) 提交于 2020-01-25 07:50:06
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Unable to access object of other class I've been working on a little project just to increase my comprehension of the objective-c syntaxe and functionalities but I'm stuck in my own project and can't find the answer. First I've got two classes and in my main one I have declare a object of my other class so I can use the functions from my other class. This is how I did it (I just wrote the thing that I thought

Passing data between class and form in C# using delegate parameter

由 谁都会走 提交于 2020-01-25 07:46:11
问题 I have to pass value into RichTextBox from a class. Here is my code. I have to pass values into any tools like textbox, listbox but I don't know how. I have to use delegates to pass md value to both methods and into the same richtextbox. namespace delegateEx2 { public class MyClass : Form1 { delegate void MyDelegate(string MyString); public void ShowThoseMessages() { MyDelegate md = new MyDelegate(log1); md += log2; md("Error Log Text"); } public void log1(string message) { //what can I write

How to make Swift protocol conformed by a specific kind of Class?

由 五迷三道 提交于 2020-01-25 07:28:07
问题 I wrote a protocol in Swift: protocol FooDelegate{ titleImage:UIImage? {get} } I want to make sure that the class that conforms to it must be a UITableViewController type. In other words: // ViewController conform FooDelegate is OK,Because ViewController // is inherit from UITableViewController! class ViewController:UITableViewController,FooDelegate /* compile ok */{ } // OtherVC is failed to conform FooDelegate,Because it is not inherit // from UITableViewController. class OtherVC

Cannot read property stop of undefined - when calling a static method from inside class

由 空扰寡人 提交于 2020-01-25 07:27:11
问题 For some reason, when I run this code, even without first calling the startRecording method it gives me this error right after the page has loaded. Uncaught TypeError: Cannot read proporty 'stop' of undefind. I think it has something to do with scope but I'm not sure. The startRecording method works fine but it finds a problem in stopRecording. RecorderClass class RecorderClass { constructor() { this.rec = '' } static startRecording() { this.rec = new Recorder() this.rec.record() } static
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