base | 易学教程

创建自定义配置节点（web.config和app.config都适用）

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　　恼火！不小心点到全屏幕模式，刚写的东西全丢了！！从头再来！！！　　无论是web程序、windows程序、windows service程序，配置文件都是少不了的。我们都习惯了将连接字符串放在ConnectionString节点中，将程序的设置放在appSetting节点中。配置文件的管理程序为我们提供了方便的管理方式，那么，我们如何自定义配置节点呢？　　有两种方法，其一，继承IConfigurationSectionHandler，通过实现Create方法。这种方法的灵活度非常大，我们需要动手解析自定义节点的XmlNode，所以，实现起来也比较复杂。其二，继承ConfigurationSection，这种方法就简单多了，只需要指定对应的属性名称即可。　　本文旨在使用最少的代码实现自定义配置节点，所以果断放弃第一种方法，使用第二种方法实现自定义配置节点。　　光说不练假把式，接下来我们就着手使用第二种方法实现自定义配置节点。步骤如下：　　1.在configSections节点中定义自定义配置节点信息 <configSections> <section name="custom" type="SampleWebConfigSection.Configuration.customSection, SampleWebConfigSection" /> <

Why can I call base template class method from derived class

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问题 I decided to test one of the examples in "Effective C++" and I'm not getting the result I expected. So, apparently this (simplified) code shouldn't compile: template <class T> struct A { void f(){} }; template <class T> struct B : public A <T> { void f2() { f(); } // calling base function - will not compile }; Here's the explanation (class names changed for simplicity) : The code above won't compile, at least not with conformant compilers. Such compilers will complain that f doesn't exist. We

AngularJS + Base Href Case Sensitive?

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问题 I'm struggling to understand why my base href seems to be case sensitive. I have a page with a base href and utilizes angularjs routing. html: <html ng-app="app"> <head> <base href="/Foo/"/> </head> <body> <div>Foo</div> <div ng-view></div> </body> </html> js: var module = angular.module('app', []); module.config(function ($routeProvider, $locationProvider) { $routeProvider .when('/Home/Page1', { templateUrl = 'partials/page1' }) .otherwise({ redirectTo: '' }); $locationProvider.html5Mode

冒泡排序+快速排序

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一.冒泡排序：外层循环控制排序躺数： n个数需要跑n-1躺，一个数组的长度为length，那么下标为length-1，那么最大趟数为length-2，即写为<length-1 //因为比较剩下最后一个数时，无需比较。内层循环控制每一趟的比较次数：每一趟需要比较n-i次 /* * 冒泡排序 */ public class BubbleSort { 　　public static void main(String[] args) { 　　　　int[] arr={6,3,8,2,9,1}; 　　　　System.out.println("排序前数组为："); 　　　　for(int num:arr){ 　　　　　　System.out.print(num+" "); 　　　　} 　　　　for(int i=0;i<arr.length-1;i++){//外层循环控制排序趟数　　　　　　for(int j=0;j<arr.length-1-i;j++){//内层循环控制每一趟排序多少次　　　　　　　　if(arr[j]>arr[j+1]){ 　　　　　　　　　　int temp=arr[j]; 　　　　　　　　　　arr[j]=arr[j+1]; 　　　　　　　　　　arr[j+1]=temp; 　　　　　　　　} 　　　　　　} 　　　　} 　　　　System.out

javascript高级编程

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <script type="text/javascript"> var array=[1,2,3,4,5,6]; var arr=array.map(function(item){ return item*2; }); alert(arr[0]);// 2 ------------------------------------------------ /////变量的作用域 var variable="out"; function func() { variable="in"; alert(variable); } func(); // 打印"in" alert(variable); // 打印"in" -----------------------------

Sort integers in any base (radix)

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问题 I am supposed to write an algorithm in C that takes an array of integers in any base (radix) and use Radix Sort to put them in ascending order. My algorithm can not impose any limit for the length of the array, the number of digits and the base. When I say integers I do not mean I will always receive an array of int s, it can be an array of long int s, char s, char pointers, etc. Seen that, I though the best way to deal with that imposing as little as possible limitations to my algorithm was

Sort integers in any base (radix)

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Magento, redirect the url from “www.domain.com/home” to base url “www.domain.com”

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问题 I am trying to configure how to redirect my magento website from www.domain.com/home to base url www.domain.com , it always redirecting to www.domain.com/home UPDATE Thanks Amit, I use your solution RewriteEngine on RewriteCond %{THE_REQUEST} ^.*/accueil RewriteRule ^(.*)accueil$ http://www.cabas-durables.fr/$1 [R=301,L] but I got error at the browser says The page isn't redirecting properly then I change the $1 after http://www.cabas-durables.fr/$1 to index.php , then it shows "http://www

Magento, redirect the url from “www.domain.com/home” to base url “www.domain.com”

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Objective-C subclass and base class casting

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问题 I'm going to create a base class that implements very similar functions for all of the subclasses. This was answered in a different question. But what I need to know now is if/how I can cast various functions (in the base class) to return the subclass object. This is both for a given function but also a function call in it. (I'm working with CoreData by the way) As a function within the base class (this is from a class that is going to become my subclass) +(Structure *)fetchStructureByID: