methods

C# delegate definition - anonymous methods vs. formally defined methods

由 落花浮王杯 提交于 2019-12-07 08:59:04
问题 When should anonymous methods be used when defining a delegate and when should formally defined methods be used when defining a delegate ? 回答1: If you need to use the same logic in more than one place, it makes sense to use a separate method. If you only need to use the logic once and it's fairly short, it makes sense to use an anonymous function. If the delegate needs access to local variables in the method which is creating it, anonymous functions act as closures which can also be very

Can you specify the return type of a method in a clojure defrecord?

由 二次信任 提交于 2019-12-07 08:55:31
问题 I've created an application-info interface and a class but when I review the generated classes the return type for all of the methods is Object, can I change the return type to String? The documentation says type hinting is possible with defrecord but doesn't give an example, the only examples I could find were for type hinting fields and method arguments. src/com/vnetpublishing.clj (ns com.vnetpublishing) (defprotocol ApplicationInfo (author [obj]) (author-email [obj]) (copyright [obj]) (app

python, dynamically implement a class onthefly

由 家住魔仙堡 提交于 2019-12-07 08:09:29
问题 Assuming i have a class that implements several methods. We want a user to chose to which methods to run among the exisiting methods or he can decide to add any method on_the_fly. from example class RemoveNoise(): pass then methods are added as wanted RemoveNoise.raw = Raw() RemoveNoise.bais = Bias() etc he can even write a new one def new(): pass and also add the new() method RemoveNoise.new=new run(RemoveNoise) run() is a function that evaluates such a class. I want to save the class_with

ES6 getter/method without curly braces

由 人盡茶涼 提交于 2019-12-07 07:41:42
问题 I have some classes which consist of many short getters/methods. Example: get jQuery() { return this.pageConfig.jQuery || jQuery; } An arrow function with similar content may be written as follows: () => this.pageConfig.jQuery || jQuery; Which is a one-liner and thus consumes only 1/3 of vertical space. But it is not a getter nor a method. Is there a recommended way of writing getters/methods in the form of a one-liner? (if possible without curly braces and without the return keyword) My

Method swizzling for NSArray

由 梦想与她 提交于 2019-12-07 07:05:07
问题 I'm trying to debug something on an NSArray and I can't even find what the pointer to the array that's causing the issue is and I have no idea why it's happening. I'm getting an error on objectAtIndex: (out of bounds) and it seems to be coming from some internal NSView method... anyway, I tried swizzling objectAtIndex: with my own, but it won't work. What's strange is I can do the same thing but with another class and method, and it works fine. Here's what I'm doing to swizzle: Class

Redirect to default method if CodeIgniter method doesn't exists.

由 心已入冬 提交于 2019-12-07 07:02:08
问题 I am using CodeignIter and am looking to for a way to write a custom handling routine for a single controller when a called method does not exist. Lets say you call www.website.com/components/login In the components controller, there is not a method called login , so instead of sending a 404 error, it would simply default to another method called default . 回答1: Yes there is a solution. If you have Components controller and the flilename components.php . Write following code... <?php if (

tagging methods and calling them from a client object by tag

由 痞子三分冷 提交于 2019-12-07 06:54:53
问题 I have been trying to figure out a way to tag several methods from my base class, so that a client class can call them by tag. The example code is: public class Base { public void method1(){ ..change state of base class } public void method2(){ ..change state of base class } public void method3(){ ..change state of base class } } A client class from a main() method will call each method of Base through a random instruction sequence: public static void main(String[] args) { String sequence =

String and Array generics methods will be deprecated in the future

由 两盒软妹~` 提交于 2019-12-07 06:47:36
问题 At the link below (MDN site) it says "String generics are non-standard, deprecated and might get removed in the future. Note that you can not rely on them cross-browser without using the shim that is provided below." Are the methods they are referring to the methods listed in the shim they provide below this statement? This is the only reference to the phrase "String generics" I have seen so it's confusing me. Also the same question for Array generics as the site mentions a similar situation

Set and get a static variable from two different classes in Java

由 点点圈 提交于 2019-12-07 06:47:35
问题 Lets say I have 3 Classes: A , Data , and B I pass a variable from class A which sets that passed variable to a private variable in class Data . Then in class B , I want to call that specific variable which has been changed. So I do Data data = new Data(); data.getVariable(); It will then return null, since in class Data I initialize variables to nothing (ex: int v; ), and I think that class B is initializing a brand new class and resetting the values to default, but I don't know how to fix

run time annotation scanning when Dynamic class loading

由 ℡╲_俬逩灬. 提交于 2019-12-07 06:31:25
import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.reflect.Method; // declare a new annotation @Retention(RetentionPolicy.RUNTIME) @interface Demo { String str(); int val(); } public class PackageDemo { // set values for the annotation @Demo(str = "Demo Annotation", val = 100) // a method to call in the main public static void example() { PackageDemo ob = new PackageDemo(); try { Class c = ob.getClass(); // get the method example Method m = c.getMethod("example"); // get the annotation for class Demo Demo annotation = m.getAnnotation(Demo.class
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