class

原生JS轮播图

由 独自空忆成欢 提交于 2020-01-06 09:02:42
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="UTF-8"> 5 <title>轮播图</title> 6 </head> 7 <style> 8 *{ 9 margin:0px; 10 padding:0px; 11 } 12 13 li{ 14 list-style: none; /*取消li默认的前缀*/ 15 } 16 17 img{ 18 display: block; /*解决图片之间3px的问题*/ 19 } 20 21 /*用一个容器包裹起来*/ 22 #container{ 23 position: relative; 24 margin: 0 auto; 25 margin-top: 130px; 26 width: 750px; 27 height: 352px; 28 border: 1px solid #ccc; 29 } 30 31 /*隐藏掉容器所有的图片*/ 32 #container>ul>li{ 33 position:absolute; 34 display: none; 35 36 } 37 38 /*显示容器中的图片active属性的那张*/ 39 #container>ul>li.active{ 40 display: block; 41 } 42 43 #buttons{ 44

Name Collision In Wsimport Generated Class And My Original Web Service Class

由 泄露秘密 提交于 2020-01-06 07:59:31
问题 I have a simple web service class defined as follows: package com.me.basiccalcws; import javax.jws.WebService; @WebService public class Calculator { public int add(int a, int b) { return a + b; } } I use the wsgen tool to generate a wsdl : wsgen -classpath ..\bin -wsdl -s src -r wsdl -d bin com.me.basiccalcws.Calculator Then I use wsimport to generate client stubs: wsimport -s src ..\_wsgen\wsdl\CalculatorService.wsdl The files that are generated after running wsimport are as follows: Add

error could not find the main class program will exit after netbeans

由 ￣綄美尐妖づ 提交于 2020-01-06 07:55:09
问题 When i compile and run my program in eclipse, it works. When i run my .jar program on my personal computer (Windows 8 with java JDK 7), it works. But when i'm trying to run .jar in others computers, it doesn't work. So i tried to run with command line java -jar myjar and i got this message which i can't understand java -jar "Bureau\Application SNCF\SNCF.jar" Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader

Passing an address to a class and from there to its “child-class” by reference in C++

由 偶尔善良 提交于 2020-01-06 07:31:47
问题 "pointer" holds the address of "Int". I want to pass that address to my given classes by reference: class N { public: N(int &pPointer){ std::cout << "Address: " << &(pPointer) <<" \n"; } }; class M { public: M(int &pPointer):n(pPointer) { std::cout << "Address: " << &pPointer <<" \n"; } private: N n; }; int main () { int Int = 5; int *pointer = &Int; std::cout << "Address: " << pointer <<" \n"; M m(*pointer); return 0; } Is this a good practice (since I'm kind of using a reference to a

Passing an address to a class and from there to its “child-class” by reference in C++

由 纵饮孤独 提交于 2020-01-06 07:31:26
问题 "pointer" holds the address of "Int". I want to pass that address to my given classes by reference: class N { public: N(int &pPointer){ std::cout << "Address: " << &(pPointer) <<" \n"; } }; class M { public: M(int &pPointer):n(pPointer) { std::cout << "Address: " << &pPointer <<" \n"; } private: N n; }; int main () { int Int = 5; int *pointer = &Int; std::cout << "Address: " << pointer <<" \n"; M m(*pointer); return 0; } Is this a good practice (since I'm kind of using a reference to a

Python Class inside Class using same methods

由 旧时模样 提交于 2020-01-06 07:17:10
问题 If I writing a class inside a class, and them both use same methods i.e.: class Master: def calculate(self): variable = 5 return variable class Child: def calculate(self): variable = 5 return variable Do I have to declare this method in both classes, or can I only declare it in the Master, and then use it in Child? 回答1: Nesting one class inside another has no other effect than that the nested class becomes an attribute on the outer class. They have no other relationship. In other words, Child

What happens with Unused Class Properties

由 假如想象 提交于 2020-01-06 07:07:33
问题 I am interested to know what happens with unused properties of a class when an object is instantiated? Are there performance hits for having additional unused properties? What about complex properties that are accessing the database, but I'm not using them, are they still being loaded? 回答1: Yes, they are still in memory with default values for the types. Any property sets called will increase memory usage on reference types, whether get is called or not. 来源： https://stackoverflow.com

How to access a method inside a class?

由 眉间皱痕 提交于 2020-01-06 06:30:49
问题 Environment: Python 2.7 (Might be related). for example, I want to call class original __repr__ method depending on if an attribute on instance has been set. class A(object): # original_repr = ?__repr__ def __init__(self, switch): self.switch = switch def __repr__(self): if self.switch: return self._repr() else: # return saved original __repr__ method. def custom_repr(self): pass a = A() a._repr = MethodType( custom_repr, a, A) How do I save the __repr__ method of the class? obviously I can't

How to change class dynamically for view controller using interface builder

由 会有一股神秘感。 提交于 2020-01-06 06:06:58
问题 there are different conditions for same design file. i can't use if-else in same class file to differentiate them. because manage all conditions are difficult. is there any way to change class at dynamic time. 回答1: Yes, we can set class using Xib. But from my research i didn't find any way to change storyboard class dynamically. I found other way to reuse the view like using container view. following link shows how can we reuse storyboard view. Diego Lavalle describe it on medium. and you can

SwiftUI filter array via searchBar

由 眉间皱痕 提交于 2020-01-06 06:06:37
问题 I been suggested in order to perform a search on array in different thread (to avoid the block of my view) the use of a @state var but I keep getting this error.. Argument passed to call that takes no arguments... I simplify my code in a new project and still gave me error..looks for some tips.. this my contentView import SwiftUI struct ContentView: View { @ObservedObject var dm: DataManager @State private var searchTerm : String = "" @State var filteredAirports: [AirportModel] = [] init() {
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