class

问题 Here is my code DeviceClass.cpp: ... #include "myHeader.h" class DeviceClass : public DeviceClassBase { private: myClass::myStruct Foo; Foo.one = 1; Foo.two = 2; myClass myclass(Foo); ... }; This is myClass from the myHeader.h file: class myClass : baseClass{ public: struct myStruct { myStruct(): one(0), two(0){} int one; int two; }; myClass(const myStruct &mystruct); }; But this is failing to compile. I get this error: : error: ISO C++ forbids declaration of 'myStruct' with no type : error:

问题 How do I take a basic class that I've made and extract it's properties in the list in WPF? I've already tried playing with the itemssource property but nothing seems to have worked for me. Public Class PageContent Public StartDate As DateTime Public Header As String Public Content As String End Class <ListView Name="grid_PageContentList" > <ListView.View> <GridView> <GridViewColumn DisplayMemberBinding="{Binding StartDate}" Width="50"></GridViewColumn> <GridViewColumn DisplayMemberBinding="

问题 I made my scripts without class. (framework). Now I have changed my mind & I wanna make my scripts with classes. I like it. But there I have a problem.. Infinite Loop While. I didn't take this problem before with without classes.. While Rule; while ($fetch=$db->fetchObject($db->q("SELECT * FROM auction_house.items ORDER BY id DESC LIMIT ".$min_stuff.",".$max_stuff.""))) { // etc } Class; public function fetchObject($queryRes) { $this->queryRes = $queryRes; $this->record = mysql_fetch_object(

问题 whats up? i'm a beginner to development and everywhere i read 'do not repeat yourself', so i really mind about repeating myself. there is a piece of code that i copied and pasted in every single activity of my app, and i suspect there might be a way of not repeating it - maybe creating a class and calling its methods - but i don't know how to implement it. the code below is what i'm talking about: something i use in my navigation drawer and it's inside the main class of each activity of my

问题 This: class Loan def initialize(amount, interest) @amount = amount @interest = interest end end loan1 = Loan.new(100, 0.1) Loan.each do |amount, interest| debt = debt + amount + (amount*interest) end won't work because it's attempting to iterate over a class rather than an array or hash. Is there a away to iterate over all of the instances of a class? 回答1: Ruby doesn't automatically keep references to objects you create, it's your responsibility to write code that does. For example, when

问题 Let me give an idea of what I wish to do: I have a structure or class called student , which contains variables like int roll_no and int reg_no If the user wishes to add a new variable like char name at run time how can it be done? 回答1: Based on the word "Structure" and the variable declarations, I'm going to guess this question is about some flavor of C. How exactly to do this will depend on the language, but as a general rule, if the language is compiled (e.g. C/C++, Java), this is not

问题 The following code gives the error: 'B' is an inaccessible base of 'D'. Why does this happen? The constructor of B is public which means it should be inherited by class D even though the inheritance is protected / private. Can someone tell me a workaround as well? Except of course making the inheritance public. #include <iostream> #include <typeinfo> using namespace std; class B { int i; public: B() { i=1; } int get_i() { return i; } }; class D: private B { int j; public: D() { j=2; } int get

问题 In C++ I can declare a fully functional anonymous class inside a piece of code where it's needed so that I don't have to declare it if I need it only once. The code should be like this Class MyClass { Class { String string1; String string2; void MyMethod(); } Strings; } And call it the members with MyClass.Strings.string1 , MyClass.Strings.MyMethod() and so on. This way I can elegantly group my code. Is there a way to do the same thing in C#? 回答1: Try making the inner class static. That way

问题 I am getting a classnotfound exception. The class which is claimed to be not found does not exist, but the class name is set as the path to the list of input files for my map reduce jobs. INFO server Running: /usr/lib/hadoop/bin/hadoop --config /var/run/cloudera-scm-agent/process/155-hue/JOBSUBD/hadoop-conf jar tmp.jar /user/hduser/datasets/ /user/hduser/tmp/job_20/ mongodb://slave15/db_8.job_20 Exception in thread "main" java.lang.ClassNotFoundException: /user/hduser/datasets/ at java.lang

问题 The folliwing fiddle is ok, read below what I need to change at it. http://jsfiddle.net/V5SSM/14/ You click on ☑ Subsection 1.1 and then all other get clicked: ☑ Subsection 2.1 ☑ Subsection 2.2 ☑ Subsection 2.3 ☑ Subsection 2.4 ☑ Subsection 3.1 ☑ Subsection 3.2 ☑ Subsection 3.3 ☑ Subsection 3.4 Here is the HTML tree: Section 1 Subsection 1.1 Subsection 1.2 Subsection 1.3 Subsection 1.4 Section 2 Subsection 2.1 Subsection 2.2 Subsection 2.3 Subsection 2.4 Section 3 Subsection 3.1 Subsection 3